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Commit 6a2b75c2 authored by Bruce Momjian's avatar Bruce Momjian
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Add Olson's public domain timezone library to src/timezone.

parent d51d870f
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src/timezone/Makefile 0 → 100644
View file @ 6a2b75c2
#-------------------------------------------------------------------------
#
# Makefile--
# Makefile for the timezone library
# IDENTIFICATION
# $PostgreSQL: pgsql/src/timezone/Makefile,v 1.1 2004/04/30 04:09:23 momjian Exp $
#
#-------------------------------------------------------------------------
subdir = src/port/tz
top_builddir = ../../..
include $(top_builddir)/src/Makefile.global
OBJS= asctime.o difftime.o localtime.o pgtz.o
ZICOBJS= zic.o ialloc.o scheck.o localtime.o asctime.o pgtz.o ../path.o
TZDATA := africa antarctica asia australasia europe northamerica southamerica pacificnew etcetera factory backward systemv solar87 solar88 solar89
TZDATAFILES := $(TZDATA:%=data/%)
all: SUBSYS.o zic
SUBSYS.o: $(OBJS)
$(LD) $(LDREL) $(LDOUT) SUBSYS.o $(OBJS)
zic: $(ZICOBJS)
install: zic
zic -d $(datadir)/timezone $(TZDATAFILES)
clean distclean maintainer-clean:
rm -f SUBSYS.o $(OBJS) $(ZICOBJS)
src/timezone/README 0 → 100644
View file @ 6a2b75c2
This is a PostgreSQL adapted version of the timezone library
from:
ftp://elsie.nci.nih.gov/pub/tz*.tar.gz
The interface is used when USE_PGTZ is defined at the top level. This
will cause the following functions to be redefined:
localtime pg_localtime
gmtime pg_gmtime
asctime pg_asctime
ctime pg_ctime
difftime pg_difftime
mktime pg_mktime
tzset pg_tzset
and the TIMEZONE_GLOBAL define in c.h is redefined to pg_timezone.
src/timezone/asctime.c 0 → 100644
View file @ 6a2b75c2
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)asctime.c 7.9";
#endif /* !defined NOID */
#endif /* !defined lint */
/*LINTLIBRARY*/
#include "private.h"
#include "tzfile.h"
/*
** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
*/
char *
asctime_r(timeptr, buf)
register const struct tm * timeptr;
char * buf;
{
static const char wday_name[][3] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
static const char mon_name[][3] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
register const char * wn;
register const char * mn;
if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
wn = "???";
else wn = wday_name[timeptr->tm_wday];
if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
mn = "???";
else mn = mon_name[timeptr->tm_mon];
/*
** The X3J11-suggested format is
** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
** Since the .2 in 02.2d is ignored, we drop it.
*/
(void) sprintf(buf, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
wn, mn,
timeptr->tm_mday, timeptr->tm_hour,
timeptr->tm_min, timeptr->tm_sec,
TM_YEAR_BASE + timeptr->tm_year);
return buf;
}
/*
** A la X3J11, with core dump avoidance.
*/
char *
asctime(timeptr)
register const struct tm * timeptr;
{
/*
** Big enough for something such as
** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
** (two three-character abbreviations, five strings denoting integers,
** three explicit spaces, two explicit colons, a newline,
** and a trailing ASCII nul).
*/
static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
3 + 2 + 1 + 1];
return asctime_r(timeptr, result);
}
src/timezone/data/africa 0 → 100644
View file @ 6a2b75c2
# @(#)africa 7.36
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@elsie.nci.nih.gov for general use in the future).
# From Paul Eggert <eggert@twinsun.com> (1999-03-22):
#
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
#
# Except where otherwise noted, Shanks is the source for entries through 1990,
# and IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
# I found in the UCLA library.
#
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
# Previous editions of this database used WAT, CAT, SAT, and EAT
# for +0:00 through +3:00, respectively,
# but Mark R V Murray <markm@grondar.za> reports that
# `SAST' is the official abbreviation for +2:00 in the country of South Africa,
# `CAT' is commonly used for +2:00 in countries north of South Africa, and
# `WAT' is probably the best name for +1:00, as the common phrase for
# the area that includes Nigeria is ``West Africa''.
# He has heard of ``Western Sahara Time'' for +0:00 but can find no reference.
#
# To make things confusing, `WAT' seems to have been used for -1:00 long ago;
# I'd guess that this was because people needed _some_ name for -1:00,
# and at the time, far west Africa was the only major land area in -1:00.
# This usage is now obsolete, as the last use of -1:00 on the African
# mainland seems to have been 1976 in Western Sahara.
#
# To summarize, the following abbreviations seem to have some currency:
# -1:00 WAT West Africa Time (no longer used)
# 0:00 GMT Greenwich Mean Time
# 2:00 CAT Central Africa Time
# 2:00 SAST South Africa Standard Time
# and Murray suggests the following abbreviation:
# 1:00 WAT West Africa Time
# I realize that this leads to `WAT' being used for both -1:00 and 1:00
# for times before 1976, but this is the best I can think of
# until we get more information.
#
# I invented the following abbreviations; corrections are welcome!
# 2:00 WAST West Africa Summer Time
# 2:30 BEAT British East Africa Time (no longer used)
# 2:44:45 BEAUT British East Africa Unified Time (no longer used)
# 3:00 CAST Central Africa Summer Time (no longer used)
# 3:00 SAST South Africa Summer Time (no longer used)
# 3:00 EAT East Africa Time
# 4:00 EAST East Africa Summer Time (no longer used)
# Algeria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Algeria 1916 only - Jun 14 23:00s 1:00 S
Rule Algeria 1916 1919 - Oct Sun<=7 23:00s 0 -
Rule Algeria 1917 only - Mar 24 23:00s 1:00 S
Rule Algeria 1918 only - Mar 9 23:00s 1:00 S
Rule Algeria 1919 only - Mar 1 23:00s 1:00 S
Rule Algeria 1920 only - Feb 14 23:00s 1:00 S
Rule Algeria 1920 only - Oct 23 23:00s 0 -
Rule Algeria 1921 only - Mar 14 23:00s 1:00 S
Rule Algeria 1921 only - Jun 21 23:00s 0 -
Rule Algeria 1939 only - Sep 11 23:00s 1:00 S
Rule Algeria 1939 only - Nov 19 1:00 0 -
Rule Algeria 1944 1945 - Apr Mon<=7 2:00 1:00 S
Rule Algeria 1944 only - Oct 8 2:00 0 -
Rule Algeria 1945 only - Sep 16 1:00 0 -
Rule Algeria 1971 only - Apr 25 23:00s 1:00 S
Rule Algeria 1971 only - Sep 26 23:00s 0 -
Rule Algeria 1977 only - May 6 0:00 1:00 S
Rule Algeria 1977 only - Oct 21 0:00 0 -
Rule Algeria 1978 only - Mar 24 1:00 1:00 S
Rule Algeria 1978 only - Sep 22 3:00 0 -
Rule Algeria 1980 only - Apr 25 0:00 1:00 S
Rule Algeria 1980 only - Oct 31 2:00 0 -
# Shanks gives 0:09 for Paris Mean Time; go with Howse's more precise 0:09:21.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
0:00 Algeria WE%sT 1940 Feb 25 2:00
1:00 Algeria CE%sT 1946 Oct 7
0:00 - WET 1956 Jan 29
1:00 - CET 1963 Apr 14
0:00 Algeria WE%sT 1977 Oct 21
1:00 Algeria CE%sT 1979 Oct 26
0:00 Algeria WE%sT 1981 May
1:00 - CET
# Angola
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Luanda 0:52:56 - LMT 1892
0:52:04 - AOT 1911 May 26 # Angola Time
1:00 - WAT
# Benin
# Whitman says they switched to 1:00 in 1946, not 1934; go with Shanks.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Porto-Novo 0:10:28 - LMT 1912
0:00 - GMT 1934 Feb 26
1:00 - WAT
# Botswana
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Gaborone 1:43:40 - LMT 1885
2:00 - CAT 1943 Sep 19 2:00
2:00 1:00 CAST 1944 Mar 19 2:00
2:00 - CAT
# Burkina Faso
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Ouagadougou -0:06:04 - LMT 1912
0:00 - GMT
# Burundi
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Bujumbura 1:57:28 - LMT 1890
2:00 - CAT
# Cameroon
# Whitman says they switched to 1:00 in 1920; go with Shanks.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Douala 0:38:48 - LMT 1912
1:00 - WAT
# Cape Verde
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia
-2:00 - CVT 1942 Sep
-2:00 1:00 CVST 1945 Oct 15
-2:00 - CVT 1975 Nov 25 2:00
-1:00 - CVT
# Central African Republic
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Bangui 1:14:20 - LMT 1912
1:00 - WAT
# Chad
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Ndjamena 1:00:12 - LMT 1912
1:00 - WAT 1979 Oct 14
1:00 1:00 WAST 1980 Mar 8
1:00 - WAT
# Comoros
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro
3:00 - EAT
# Democratic Republic of Congo
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Kinshasa 1:01:12 - LMT 1897 Nov 9
1:00 - WAT
Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9
2:00 - CAT
# Republic of the Congo
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Brazzaville 1:01:08 - LMT 1912
1:00 - WAT
# Cote D'Ivoire
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Abidjan -0:16:08 - LMT 1912
0:00 - GMT
# Djibouti
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul
3:00 - EAT
###############################################################################
# Egypt
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Egypt 1940 only - Jul 15 0:00 1:00 S
Rule Egypt 1940 only - Oct 1 0:00 0 -
Rule Egypt 1941 only - Apr 15 0:00 1:00 S
Rule Egypt 1941 only - Sep 16 0:00 0 -
Rule Egypt 1942 1944 - Apr 1 0:00 1:00 S
Rule Egypt 1942 only - Oct 27 0:00 0 -
Rule Egypt 1943 1945 - Nov 1 0:00 0 -
Rule Egypt 1945 only - Apr 16 0:00 1:00 S
Rule Egypt 1957 only - May 10 0:00 1:00 S
Rule Egypt 1957 1958 - Oct 1 0:00 0 -
Rule Egypt 1958 only - May 1 0:00 1:00 S
Rule Egypt 1959 1981 - May 1 1:00 1:00 S
Rule Egypt 1959 1965 - Sep 30 3:00 0 -
Rule Egypt 1966 1994 - Oct 1 3:00 0 -
Rule Egypt 1982 only - Jul 25 1:00 1:00 S
Rule Egypt 1983 only - Jul 12 1:00 1:00 S
Rule Egypt 1984 1988 - May 1 1:00 1:00 S
Rule Egypt 1989 only - May 6 1:00 1:00 S
Rule Egypt 1990 1994 - May 1 1:00 1:00 S
# IATA (after 1990) says transitions are at 0:00.
# Go with IATA starting in 1995, except correct 1995 entry from 09-30 to 09-29.
Rule Egypt 1995 max - Apr lastFri 0:00s 1:00 S
Rule Egypt 1995 max - Sep lastThu 23:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Cairo 2:05:00 - LMT 1900 Oct
2:00 Egypt EE%sT
# Equatorial Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Malabo 0:35:08 - LMT 1912
0:00 - GMT 1963 Dec 15
1:00 - WAT
# Eritrea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Asmera 2:35:32 - LMT 1870
2:35:32 - AMT 1890 # Asmera Mean Time
2:35:20 - ADMT 1936 May 5 # Adis Dera MT
3:00 - EAT
# Ethiopia
# From Paul Eggert (1997-10-05):
# Shanks writes that Ethiopia had six narrowly-spaced time zones between
# 1870 and 1890, and that they merged to 38E50 (2:35:20) in 1890.
# We'll guess that 38E50 is for Adis Dera.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
2:35:20 - ADMT 1936 May 5 # Adis Dera MT
3:00 - EAT
# Gabon
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Libreville 0:37:48 - LMT 1912
1:00 - WAT
# Gambia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Banjul -1:06:36 - LMT 1912
-1:06:36 - BMT 1935 # Banjul Mean Time
-1:00 - WAT 1964
0:00 - GMT
# Ghana
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman says DST was observed from 1931 to ``the present''; go with Shanks.
Rule Ghana 1936 1942 - Sep 1 0:00 0:20 GHST
Rule Ghana 1936 1942 - Dec 31 0:00 0 GMT
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Accra -0:00:52 - LMT 1918
0:00 Ghana %s
# Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Conakry -0:54:52 - LMT 1912
0:00 - GMT 1934 Feb 26
-1:00 - WAT 1960
0:00 - GMT
# Guinea-Bissau
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Bissau -1:02:20 - LMT 1911 May 26
-1:00 - WAT 1975
0:00 - GMT
# Kenya
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul
3:00 - EAT 1930
2:30 - BEAT 1940
2:44:45 - BEAUT 1960
3:00 - EAT
# Lesotho
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Maseru 1:50:00 - LMT 1903 Mar
2:00 - SAST 1943 Sep 19 2:00
2:00 1:00 SAST 1944 Mar 19 2:00
2:00 - SAST
# Liberia
# From Paul Eggert <eggert@twinsun.com> (2001-07-17):
# In 1972 Liberia was the last country to switch
# from a UTC offset that was not a multiple of 15 or 20 minutes.
# Howse reports that it was in honor of their president's birthday.
# Shanks reports the date as May 1, whereas Howse reports Jan; go with Shanks.
# For Liberia before 1972, Shanks reports -0:44, whereas Howse and Whitman
# each report -0:44:30; go with the more precise figure.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Monrovia -0:43:08 - LMT 1882
-0:43:08 - MMT 1919 Mar # Monrovia Mean Time
-0:44:30 - LRT 1972 May # Liberia Time
0:00 - GMT
###############################################################################
# Libya
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Libya 1951 only - Oct 14 2:00 1:00 S
Rule Libya 1952 only - Jan 1 0:00 0 -
Rule Libya 1953 only - Oct 9 2:00 1:00 S
Rule Libya 1954 only - Jan 1 0:00 0 -
Rule Libya 1955 only - Sep 30 0:00 1:00 S
Rule Libya 1956 only - Jan 1 0:00 0 -
Rule Libya 1982 1984 - Apr 1 0:00 1:00 S
Rule Libya 1982 1985 - Oct 1 0:00 0 -
Rule Libya 1985 only - Apr 6 0:00 1:00 S
Rule Libya 1986 only - Apr 4 0:00 1:00 S
Rule Libya 1986 only - Oct 3 0:00 0 -
Rule Libya 1987 1989 - Apr 1 0:00 1:00 S
Rule Libya 1987 1990 - Oct 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Tripoli 0:52:44 - LMT 1920
1:00 Libya CE%sT 1959
2:00 - EET 1982
1:00 Libya CE%sT 1990 May 4
# The following entries are all from Shanks;
# the IATA SSIM data contain some obvious errors.
2:00 - EET 1996 Sep 30
1:00 - CET 1997 Apr 4
1:00 1:00 CEST 1997 Oct 4
2:00 - EET
# Madagascar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul
3:00 - EAT 1954 Feb 27 23:00s
3:00 1:00 EAST 1954 May 29 23:00s
3:00 - EAT
# Malawi
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Blantyre 2:20:00 - LMT 1903 Mar
2:00 - CAT
# Mali
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Bamako -0:32:00 - LMT 1912
0:00 - GMT 1934 Feb 26
-1:00 - WAT 1960 Jun 20
0:00 - GMT
# no longer different from Bamako, but too famous to omit
Zone Africa/Timbuktu -0:12:04 - LMT 1912
0:00 - GMT
# Mauritania
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Nouakchott -1:03:48 - LMT 1912
0:00 - GMT 1934 Feb 26
-1:00 - WAT 1960 Nov 28
0:00 - GMT
# Mauritius
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
4:00 - MUT # Mauritius Time
# Agalega Is, Rodriguez
# no information; probably like Indian/Mauritius
# Mayotte
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou
3:00 - EAT
# Morocco
# See the `europe' file for Spanish Morocco (Africa/Ceuta).
# RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Morocco 1939 only - Sep 12 0:00 1:00 S
Rule Morocco 1939 only - Nov 19 0:00 0 -
Rule Morocco 1940 only - Feb 25 0:00 1:00 S
Rule Morocco 1945 only - Nov 18 0:00 0 -
Rule Morocco 1950 only - Jun 11 0:00 1:00 S
Rule Morocco 1950 only - Oct 29 0:00 0 -
Rule Morocco 1967 only - Jun 3 12:00 1:00 S
Rule Morocco 1967 only - Oct 1 0:00 0 -
Rule Morocco 1974 only - Jun 24 0:00 1:00 S
Rule Morocco 1974 only - Sep 1 0:00 0 -
Rule Morocco 1976 1977 - May 1 0:00 1:00 S
Rule Morocco 1976 only - Aug 1 0:00 0 -
Rule Morocco 1977 only - Sep 28 0:00 0 -
Rule Morocco 1978 only - Jun 1 0:00 1:00 S
Rule Morocco 1978 only - Aug 4 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26
0:00 Morocco WE%sT 1984 Mar 16
1:00 - CET 1986
0:00 - WET
# Western Sahara
Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan
-1:00 - WAT 1976 Apr 14
0:00 - WET
# Mozambique
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Maputo 2:10:20 - LMT 1903 Mar
2:00 - CAT
# Namibia
# The 1994-04-03 transition is from Shanks.
# Shanks reports no DST after 1998-04; go with IATA.
# RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Namibia 1994 max - Sep Sun>=1 2:00 1:00 S
Rule Namibia 1995 max - Apr Sun>=1 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
1:30 - SWAT 1903 Mar # SW Africa Time
2:00 - SAST 1942 Sep 20 2:00
2:00 1:00 SAST 1943 Mar 21 2:00
2:00 - SAST 1990 Mar 21 # independence
2:00 - CAT 1994 Apr 3
1:00 Namibia WA%sT
# Niger
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Niamey 0:08:28 - LMT 1912
-1:00 - WAT 1934 Feb 26
0:00 - GMT 1960
1:00 - WAT
# Nigeria
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Lagos 0:13:36 - LMT 1919 Sep
1:00 - WAT
# Reunion
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis
4:00 - RET # Reunion Time
#
# Scattered Islands (Iles Eparses) administered from Reunion are as follows.
# The following information about them is taken from
# Iles Eparses (www.outre-mer.gouv.fr/domtom/ile.htm, 1997-07-22, in French;
# no longer available as of 1999-08-17).
# We have no info about their time zone histories.
#
# Bassas da India - uninhabited
# Europa Island - inhabited from 1905 to 1910 by two families
# Glorioso Is - inhabited until at least 1958
# Juan de Nova - uninhabited
# Tromelin - inhabited until at least 1958
# Rwanda
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Kigali 2:00:16 - LMT 1935 Jun
2:00 - CAT
# St Helena
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown
-0:22:48 - JMT 1951 # Jamestown Mean Time
0:00 - GMT
# The other parts of the St Helena territory are similar:
# Tristan da Cunha: on GMT, say Whitman and the CIA
# Ascension: on GMT, says usno1995 and the CIA
# Gough (scientific station since 1955; sealers wintered previously):
# on GMT, says the CIA
# Inaccessible, Nightingale: no information, but probably GMT
# Sao Tome and Principe
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Sao_Tome 0:26:56 - LMT 1884
-0:36:32 - LMT 1912 # Lisbon Mean Time
0:00 - GMT
# Senegal
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Dakar -1:09:44 - LMT 1912
-1:00 - WAT 1941 Jun
0:00 - GMT
# Seychelles
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
4:00 - SCT # Seychelles Time
# From Paul Eggert (2001-05-30):
# Aldabra, Farquhar, and Desroches, originally dependencies of the
# Seychelles, were transferred to the British Indian Ocean Territory
# in 1965 and returned to Seychelles control in 1976. We don't know
# whether this affected their time zone, so omit this for now.
# Possibly the islands were uninhabited.
# Sierra Leone
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman gives Mar 31 - Aug 31 for 1931 on; go with Shanks.
Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST
Rule SL 1935 1942 - Oct 1 0:00 0 WAT
Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST
Rule SL 1957 1962 - Sep 1 0:00 0 GMT
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Freetown -0:53:00 - LMT 1882
-0:53:00 - FMT 1913 Jun # Freetown Mean Time
-1:00 SL %s 1957
0:00 SL %s
# Somalia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
3:00 - EAT 1931
2:30 - BEAT 1957
3:00 - EAT
# South Africa
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule SA 1942 1943 - Sep Sun>=15 2:00 1:00 -
Rule SA 1943 1944 - Mar Sun>=15 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8
1:30 - SAST 1903 Mar
2:00 SA SAST
# Marion and Prince Edward Is
# scientific station since 1947
# no information
# Sudan
#
# From <a href="http://www.sunanews.net/sn13jane.html">
# Sudan News Agency (2000-01-13)
# </a>, also reported by Michael De Beukelaer-Dossche via Steffen Thorsen:
# Clocks will be moved ahead for 60 minutes all over the Sudan as of noon
# Saturday.... This was announced Thursday by Caretaker State Minister for
# Manpower Abdul-Rahman Nur-Eddin.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Sudan 1970 only - May 1 0:00 1:00 S
Rule Sudan 1970 1985 - Oct 15 0:00 0 -
Rule Sudan 1971 only - Apr 30 0:00 1:00 S
Rule Sudan 1972 1985 - Apr lastSun 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Khartoum 2:10:08 - LMT 1931
2:00 Sudan CA%sT 2000 Jan 15 12:00
3:00 - EAT
# Swaziland
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar
2:00 - SAST
# Tanzania
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
3:00 - EAT 1948
2:44:45 - BEAUT 1961
3:00 - EAT
# Togo
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Lome 0:04:52 - LMT 1893
0:00 - GMT
# Tunisia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Tunisia 1939 only - Apr 15 23:00s 1:00 S
Rule Tunisia 1939 only - Nov 18 23:00s 0 -
Rule Tunisia 1940 only - Feb 25 23:00s 1:00 S
Rule Tunisia 1941 only - Oct 6 0:00 0 -
Rule Tunisia 1942 only - Mar 9 0:00 1:00 S
Rule Tunisia 1942 only - Nov 2 3:00 0 -
Rule Tunisia 1943 only - Mar 29 2:00 1:00 S
Rule Tunisia 1943 only - Apr 17 2:00 0 -
Rule Tunisia 1943 only - Apr 25 2:00 1:00 S
Rule Tunisia 1943 only - Oct 4 2:00 0 -
Rule Tunisia 1944 1945 - Apr Mon>=1 2:00 1:00 S
Rule Tunisia 1944 only - Oct 8 0:00 0 -
Rule Tunisia 1945 only - Sep 16 0:00 0 -
Rule Tunisia 1977 only - Apr 30 0:00s 1:00 S
Rule Tunisia 1977 only - Sep 24 0:00s 0 -
Rule Tunisia 1978 only - May 1 0:00s 1:00 S
Rule Tunisia 1978 only - Oct 1 0:00s 0 -
Rule Tunisia 1988 only - Jun 1 0:00s 1:00 S
Rule Tunisia 1988 1990 - Sep lastSun 0:00s 0 -
Rule Tunisia 1989 only - Mar 26 0:00s 1:00 S
Rule Tunisia 1990 only - May 1 0:00s 1:00 S
# Shanks gives 0:09 for Paris Mean Time; go with Howse's more precise 0:09:21.
# Shanks says the 1911 switch occurred on Mar 9; go with Howse's Mar 11.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Tunis 0:40:44 - LMT 1881 May 12
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
1:00 Tunisia CE%sT
# Uganda
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
3:00 - EAT 1930
2:30 - BEAT 1948
2:44:45 - BEAUT 1957
3:00 - EAT
# Zambia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Lusaka 1:53:08 - LMT 1903 Mar
2:00 - CAT
# Zimbabwe
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Harare 2:04:12 - LMT 1903 Mar
2:00 - CAT
src/timezone/data/antarctica 0 → 100644
View file @ 6a2b75c2
# @(#)antarctica 7.23
# From Paul Eggert (1999-11-15):
# To keep things manageable, we list only locations occupied year-round; see
# <a href="http://www.comnap.aq/comnap/comnap.nsf/P/Stations/">
# COMNAP - Stations and Bases
# </a>
# and
# <a href="http://www.spri.cam.ac.uk/bob/periant.htm">
# Summary of the Peri-Antarctic Islands (1998-07-23)
# </a>
# for information.
# Unless otherwise specified, we have no time zone information.
#
# Except for the French entries,
# I made up all time zone abbreviations mentioned here; corrections welcome!
# FORMAT is `zzz' and GMTOFF is 0 for locations while uninhabited.
# These rules are stolen from the `europe' file.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule RussAQ 1981 1984 - Apr 1 0:00 1:00 S
Rule RussAQ 1981 1983 - Oct 1 0:00 0 -
Rule RussAQ 1984 1991 - Sep lastSun 2:00s 0 -
Rule RussAQ 1985 1991 - Mar lastSun 2:00s 1:00 S
Rule RussAQ 1992 only - Mar lastSat 23:00 1:00 S
Rule RussAQ 1992 only - Sep lastSat 23:00 0 -
Rule RussAQ 1993 max - Mar lastSun 2:00s 1:00 S
Rule RussAQ 1993 1995 - Sep lastSun 2:00s 0 -
Rule RussAQ 1996 max - Oct lastSun 2:00s 0 -
# These rules are stolen from the `southamerica' file.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule ArgAQ 1964 1966 - Mar 1 0:00 0 -
Rule ArgAQ 1964 1966 - Oct 15 0:00 1:00 S
Rule ArgAQ 1967 only - Apr 1 0:00 0 -
Rule ArgAQ 1967 1968 - Oct Sun<=7 0:00 1:00 S
Rule ArgAQ 1968 1969 - Apr Sun<=7 0:00 0 -
Rule ArgAQ 1974 only - Jan 23 0:00 1:00 S
Rule ArgAQ 1974 only - May 1 0:00 0 -
Rule ArgAQ 1974 1976 - Oct Sun<=7 0:00 1:00 S
Rule ArgAQ 1975 1977 - Apr Sun<=7 0:00 0 -
Rule ChileAQ 1966 1997 - Oct Sun>=9 0:00 1:00 S
Rule ChileAQ 1967 1998 - Mar Sun>=9 0:00 0 -
Rule ChileAQ 1998 only - Sep 27 0:00 1:00 S
Rule ChileAQ 1999 only - Apr 4 0:00 0 -
Rule ChileAQ 1999 max - Oct Sun>=9 0:00 1:00 S
Rule ChileAQ 2000 max - Mar Sun>=9 0:00 0 -
# Argentina - year-round bases
# Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05
# Esperanza, San Martin Land, -6323-05659, since 1952-12-17
# Jubany, Potter Peninsula, King George Island, -6414-0602320, since 1982-01
# Marambio, Seymour I, -6414-05637, since 1969-10-29
# Orcadas, Laurie I, -6016-04444, since 1904-02-22
# San Martin, Debenham I, -6807-06708, since 1951-03-21
# (except 1960-03 / 1976-03-21)
# Australia - territories
# Heard Island, McDonald Islands (uninhabited)
# previously sealers and scientific personnel wintered
# <a href="http://www.dstc.qut.edu.au/DST/marg/daylight.html">
# Margaret Turner reports
# </a> (1999-09-30) that they're UTC+5, with no DST;
# presumably this is when they have visitors.
#
# year-round bases
# Casey, Bailey Peninsula, -6617+11032, since 1969
# Davis, Vestfold Hills, -6835+07759, since 1957-01-13
# (except 1964-11 - 1969-02)
# Mawson, Holme Bay, -6736+06253, since 1954-02-13
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/Casey 0 - zzz 1969
8:00 - WST # Western (Aus) Standard Time
Zone Antarctica/Davis 0 - zzz 1957 Jan 13
7:00 - DAVT 1964 Nov # Davis Time
0 - zzz 1969 Feb
7:00 - DAVT
Zone Antarctica/Mawson 0 - zzz 1954 Feb 13
6:00 - MAWT # Mawson Time
# References:
# <a href="http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html">
# Casey Weather (1998-02-26)
# </a>
# <a href="http://www.antdiv.gov.au/aad/exop/sfo/davis/video.html">
# Davis Station, Antarctica (1998-02-26)
# </a>
# <a href="http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html">
# Mawson Station, Antarctica (1998-02-25)
# </a>
# Brazil - year-round base
# Ferraz, King George Island, since 1983/4
# Chile - year-round bases and towns
# Escudero, South Shetland Is, -621157-0585735, since 1994
# Frei, King George Island, -6214-05848, since 1969-03-07
# O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02
# Prat, -6230-05941
# Villa Las Estrellas (a town), King George Island, since 1984-04-09
# These locations have always used Santiago time; use TZ='America/Santiago'.
# China - year-round bases
# Great Wall, King George Island, since 1985-02-20
# Zhongshan, Larsemann Hills, Prydz Bay, since 1989-02-26
# France - year-round bases
#
# From Antoine Leca <Antoine.Leca@Renault.FR> (1997-01-20):
# Time data are from Nicole Pailleau at the IFRTP
# (French Institute for Polar Research and Technology).
# She confirms that French Southern Territories and Terre Adelie bases
# don't observe daylight saving time, even if Terre Adelie supplies came
# from Tasmania.
#
# French Southern Territories with year-round inhabitants
#
# Martin-de-Vivies Base, Amsterdam Island, -374105+0773155, since 1950
# Alfred-Faure Base, Crozet Islands, -462551+0515152, since 1964
# Port-aux-Francais, Kerguelen Islands, -492110+0701303, since 1951;
# whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956
#
# St Paul Island - near Amsterdam, uninhabited
# fishing stations operated variously 1819/1931
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Francais
5:00 - TFT # ISO code TF Time
#
# year-round base in the main continent
# Dumont-d'Urville, Ile des Petrels, -6640+14001, since 1956-11
#
# Another base at Port-Martin, 50km east, began operation in 1947.
# It was destroyed by fire on 1952-01-14.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/DumontDUrville 0 - zzz 1947
10:00 - PMT 1952 Jan 14 # Port-Martin Time
0 - zzz 1956 Nov
10:00 - DDUT # Dumont-d'Urville Time
# Reference:
# <a href="http://www.icair.iac.org.nz/science/reports/fr/IFRTP.html">
# Support and Development of Polar Research and Technology (1997-02-03)
# </a>
# Germany - year-round base
# Georg von Neumayer
# India - year-round base
# Dakshin Gangotri
# Japan - year-round bases
# Dome Fuji
# Syowa
#
# From Hideyuki Suzuki (1999-02-06):
# In all Japanese stations, +0300 is used as the standard time. [See]
# <a href="http://www.crl.go.jp/uk/uk201/basyo.htm">[reference in Japanese]</a>
# and information from KAMO Hiroyasu <wd@ics.nara-wu.ac.jp>.
#
# Syowa station, which is the first antarctic station of Japan,
# was established on 1957-01-29. Since Syowa station is still the main
# station of Japan, it's appropriate for the principal location.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/Syowa 0 - zzz 1957 Jan 29
3:00 - SYOT # Syowa Time
# See:
# <a href="http://www.nipr.ac.jp/english/ara01.html">
# NIPR Antarctic Research Activities (1999-08-17)
# </a>
# S Korea - year-round base
# King Sejong, King George Island, since 1988
# New Zealand - claims
# Balleny Islands (never inhabited)
# Scott Island (never inhabited)
#
# year-round base
# Scott, Ross Island, since 1957-01, is like Antarctica/McMurdo.
#
# These rules for New Zealand are stolen from the `australasia' file.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NZAQ 1974 only - Nov 3 2:00s 1:00 D
Rule NZAQ 1975 1988 - Oct lastSun 2:00s 1:00 D
Rule NZAQ 1989 only - Oct 8 2:00s 1:00 D
Rule NZAQ 1990 max - Oct Sun>=1 2:00s 1:00 D
Rule NZAQ 1975 only - Feb 23 2:00s 0 S
Rule NZAQ 1976 1989 - Mar Sun>=1 2:00s 0 S
Rule NZAQ 1990 max - Mar Sun>=15 2:00s 0 S
# Norway - territories
# Bouvet (never inhabited)
#
# claims
# Peter I Island (never inhabited)
# Poland - year-round base
# Arctowski, King George Island, -620945-0582745, since 1977
# Russia - year-round bases
# Bellingshausen, King George Island, -621159-0585337, since 1968-02-22
# Mirny, Davis coast, -6633+09301, since 1956-02
# Molodezhnaya, Alasheyev Bay, year-round from 1962-02 to 1999-07-01
# Novolazarevskaya, Queen Maud Land, -7046+01150,
# year-round from 1960/61 to 1992
# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11
# <a href="http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP">
# From Craig Mundell (1994-12-15)</a>:
# Vostok, which is one of the Russian stations, is set on the same
# time as Moscow, Russia.
#
# From Lee Hotz (2001-03-08):
# I queried the folks at Columbia who spent the summer at Vostok and this is
# what they had to say about time there:
# ``in the US Camp (East Camp) we have been on New Zealand (McMurdo)
# time, which is 12 hours ahead of GMT. The Russian Station Vostok was
# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead
# of GMT). This is a time zone I think two hours east of Moscow. The
# natural time zone is in between the two: 8 hours ahead of GMT.''
#
# From Paul Eggert (2001-05-04):
# This seems to be hopelessly confusing, so I asked Lee Hotz about it
# in person. He said that some Antartic locations set their local
# time so that noon is the warmest part of the day, and that this
# changes during the year and does not necessarily correspond to mean
# solar noon. So the Vostok time might have been whatever the clocks
# happened to be during their visit. So we still don't really know what time
# it is at Vostok. But we'll guess UTC+6.
#
Zone Antarctica/Vostok 0 - zzz 1957 Dec 16
6:00 - VOST # Vostok time
# S Africa - year-round bases
# Marion Island
# Sanae
# UK
#
# British Antarctic Territories (BAT) claims
# South Orkney Islands
# scientific station from 1903
# whaling station at Signy I 1920/1926
# South Shetland Islands
#
# year-round bases
# Bird Island, South Georgia, -5400-03803, since 1983
# Deception Island, -6259-06034, whaling station 1912/1931,
# scientific station 1943/1967,
# previously sealers and a scientific expedition wintered by accident,
# and a garrison was deployed briefly
# Halley, Coates Land, -7535-02604, since 1956-01-06
# Halley is on a moving ice shelf and is periodically relocated
# so that it is never more than 10km from its nominal location.
# Rothera, Adelaide Island, -6734-6808, since 1976-12-01
#
# From Paul Eggert (2002-10-22)
# <http://webexhibits.org/daylightsaving/g.html> says Rothera is -03 all year.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/Rothera 0 - zzz 1976 Dec 1
-3:00 - ROTT # Rothera time
# Uruguay - year round base
# Artigas, King George Island, -621104-0585107
# USA - year-round bases
#
# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
#
# From Ethan Dicks <erd@mcmsun5.mcmurdo.gov> (1996-10-06):
# It keeps the same time as Punta Arenas, Chile, because, just like us
# and the South Pole, that's the other end of their supply line....
# I verified with someone who was there that since 1980,
# Palmer has followed Chile. Prior to that, before the Falklands War,
# Palmer used to be supplied from Argentina.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/Palmer 0 - zzz 1965
-4:00 ArgAQ AR%sT 1969 Oct 5
-3:00 ArgAQ AR%sT 1982 May
-4:00 ChileAQ CL%sT
#
#
# McMurdo, Ross Island, since 1955-12
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/McMurdo 0 - zzz 1956
12:00 NZAQ NZ%sT
#
# Amundsen-Scott, South Pole, continuously occupied since 1956-11-20
#
# From Paul Eggert (1996-09-03):
# Normally it wouldn't have a separate entry, since it's like the
# larger Antarctica/McMurdo since 1970, but it's too famous to omit.
#
# From Chris Carrier <72157.3334@CompuServe.COM> (1996-06-27):
# Siple, the first commander of the South Pole station,
# stated that he would have liked to have kept GMT at the station,
# but that he found it more convenient to keep GMT+12
# as supplies for the station were coming from McMurdo Sound,
# which was on GMT+12 because New Zealand was on GMT+12 all year
# at that time (1957). (Source: Siple's book 90 degrees SOUTH.)
#
# From Susan Smith
# http://www.cybertours.com/whs/pole10.html
# (1995-11-13 16:24:56 +1300, no longer available):
# We use the same time as McMurdo does.
# And they use the same time as Christchurch, NZ does....
# One last quirk about South Pole time.
# All the electric clocks are usually wrong.
# Something about the generators running at 60.1hertz or something
# makes all of the clocks run fast. So every couple of days,
# we have to go around and set them back 5 minutes or so.
# Maybe if we let them run fast all of the time, we'd get to leave here sooner!!
#
Link Antarctica/McMurdo Antarctica/South_Pole
src/timezone/data/asia 0 → 100644
View file @ 6a2b75c2
# @(#)asia 7.73
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@elsie.nci.nih.gov for general use in the future).
# From Paul Eggert <eggert@twinsun.com> (1999-03-22):
#
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
#
# Except where otherwise noted, Shanks is the source for entries through 1990,
# and IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
# I found in the UCLA library.
#
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
# I invented the abbreviations marked `*' in the following table;
# the rest are from earlier versions of this file, or from other sources.
# Corrections are welcome!
# std dst
# LMT Local Mean Time
# 2:00 EET EEST Eastern European Time
# 2:00 IST IDT Israel
# 3:00 AST ADT Arabia*
# 3:30 IRST IRDT Iran
# 4:00 GST Gulf*
# 5:30 IST India
# 7:00 ICT Indochina*
# 7:00 WIT west Indonesia
# 8:00 CIT central Indonesia
# 8:00 CST China
# 9:00 CJT Central Japanese Time (1896/1937)*
# 9:00 EIT east Indonesia
# 9:00 JST Japan
# 9:00 KST Korea
# 9:30 CST (Australian) Central Standard Time
#
# See the `europe' file for Russia and Turkey in Asia.
# From Guy Harris:
# Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
# additional information from Tom Yap, Sun Microsystems Intercontinental
# Technical Support (including a page from the Official Airline Guide -
# Worldwide Edition). The names for time zones are guesses.
###############################################################################
# These rules are stolen from the `europe' file.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 S
Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S
Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
Rule RussiaAsia 1984 1991 - Sep lastSun 2:00s 0 -
Rule RussiaAsia 1985 1991 - Mar lastSun 2:00s 1:00 S
Rule RussiaAsia 1992 only - Mar lastSat 23:00 1:00 S
Rule RussiaAsia 1992 only - Sep lastSat 23:00 0 -
Rule RussiaAsia 1993 max - Mar lastSun 2:00s 1:00 S
Rule RussiaAsia 1993 1995 - Sep lastSun 2:00s 0 -
Rule RussiaAsia 1996 max - Oct lastSun 2:00s 0 -
# Afghanistan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kabul 4:36:48 - LMT 1890
4:00 - AFT 1945
4:30 - AFT
# Armenia
# From Paul Eggert (1999-10-29):
# Shanks has Yerevan switching to 3:00 (with Russian DST) in spring 1991,
# then to 4:00 with no DST in fall 1995, then readopting Russian DST in 1997.
# Go with Shanks, even when he disagrees with others. Edgar Der-Danieliantz
# <edd@AIC.NET> reported (1996-05-04) that Yerevan probably wouldn't use DST
# in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
# Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
# but started switching at 3:00s in 1998.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
3:00 - YERT 1957 Mar # Yerevan Time
4:00 RussiaAsia YER%sT 1991 Mar 31 2:00s
3:00 1:00 YERST 1991 Sep 23 # independence
3:00 RussiaAsia AM%sT 1995 Sep 24 2:00s
4:00 - AMT 1997
4:00 RussiaAsia AM%sT
# Azerbaijan
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Azer 1997 max - Mar lastSun 1:00 1:00 S
Rule Azer 1997 max - Oct lastSun 1:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Baku 3:19:24 - LMT 1924 May 2
3:00 - BAKT 1957 Mar # Baku Time
4:00 RussiaAsia BAK%sT 1991 Mar 31 2:00s
3:00 1:00 BAKST 1991 Aug 30 # independence
3:00 RussiaAsia AZ%sT 1992 Sep lastSun 2:00s
4:00 - AZT 1996 # Azerbaijan time
4:00 EUAsia AZ%sT 1997
4:00 Azer AZ%sT
# Bahrain
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Bahrain 3:22:20 - LMT 1920 # Al Manamah
4:00 - GST 1972 Jun
3:00 - AST
# Bangladesh
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dhaka 6:01:40 - LMT 1890
5:53:20 - HMT 1941 Oct # Howrah Mean Time?
6:30 - BURT 1942 May 15 # Burma Time
5:30 - IST 1942 Sep
6:30 - BURT 1951 Sep 30
6:00 - DACT 1971 Mar 26 # Dacca Time
6:00 - BDT # Bangladesh Time
# Bhutan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
5:30 - IST 1987 Oct
6:00 - BTT # Bhutan Time
# British Indian Ocean Territory
# Whitman and the 1995 CIA time zone map say 5:00, but the
# 1997 and later maps say 6:00. Assume the switch occurred in 1996.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Chagos 5:00 - IOT 1996 # BIOT Time
6:00 - IOT
# Brunei
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
7:30 - BNT 1933
8:00 - BNT
# Burma / Myanmar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Rangoon 6:24:40 - LMT 1880 # or Yangon
6:24:36 - RMT 1920 # Rangoon Mean Time?
6:30 - BURT 1942 May # Burma Time
9:00 - JST 1945 May 3
6:30 - MMT # Myanmar Time
# Cambodia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jun 9
7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
7:00 - ICT 1912 May
8:00 - ICT 1931 May
7:00 - ICT
# China
# From Guy Harris:
# People's Republic of China. Yes, they really have only one time zone.
# From Bob Devine (1988-01-28):
# No they don't. See TIME mag, 1986-02-17 p.52. Even though
# China is across 4 physical time zones, before Feb 1, 1986 only the
# Peking (Bejing) time zone was recognized. Since that date, China
# has two of 'em -- Peking's and Urumqi (named after the capital of
# the Xinjiang Uyghur Autonomous Region). I don't know about DST for it.
#
# . . .I just deleted the DST table and this editor makes it too
# painful to suck in another copy.. So, here is what I have for
# DST start/end dates for Peking's time zone (info from AP):
#
# 1986 May 4 - Sept 14
# 1987 mid-April - ??
# From U. S. Naval Observatory (1989-01-19):
# CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN
# CHINA 9 H AHEAD OF UTC APR 17 - SEP 10
# From Paul Eggert <eggert@twinsun.com> (1995-12-19):
# Shanks writes that China has had a single time zone since 1980 May 1,
# observing summer DST from 1986 through 1991; this contradicts Devine's
# note about Time magazine, though apparently _something_ happened in 1986.
# Go with Shanks for now. I made up names for the other pre-1980 time zones.
# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Shang 1940 only - Jun 3 0:00 1:00 D
Rule Shang 1940 1941 - Oct 1 0:00 0 S
Rule Shang 1941 only - Mar 16 0:00 1:00 D
Rule PRC 1949 only - Jan 1 0:00 0 S
Rule PRC 1986 only - May 4 0:00 1:00 D
Rule PRC 1986 1991 - Sep Sun>=11 0:00 0 S
Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
# From Anthony Fok (2001-12-20):
# BTW, I did some research on-line and found some info regarding these five
# historic timezones from some Taiwan websites. And yes, there are official
# Chinese names for these locales (before 1949):
# Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin
8:30 - CHAT 1932 Mar # Changbai Time
8:00 - CST 1940
9:00 - CHAT 1966 May
8:30 - CHAT 1980 May
8:00 PRC C%sT
# Zhongyuan Time ("Central plain Time")
Zone Asia/Shanghai 8:05:52 - LMT 1928
8:00 Shang C%sT 1949
8:00 PRC C%sT
# Long-shu Time (probably due to Long and Shu being two names of that area)
Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
7:00 - LONT 1980 May # Long-shu Time
8:00 PRC C%sT
# Xin-zang Time ("Xinjiang-Tibet Time")
Zone Asia/Urumqi 5:50:20 - LMT 1928 # or Urumchi
6:00 - URUT 1980 May # Urumqi Time
8:00 PRC C%sT
# Kunlun Time
Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar
5:30 - KAST 1940 # Kashgar Time
5:00 - KAST 1980 May
8:00 PRC C%sT
# Hong Kong (Xianggang)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule HK 1946 only - Apr 20 3:30 1:00 S
Rule HK 1946 only - Dec 1 3:30 0 -
Rule HK 1947 only - Apr 13 3:30 1:00 S
Rule HK 1947 only - Dec 30 3:30 0 -
Rule HK 1948 only - May 2 3:30 1:00 S
Rule HK 1948 1952 - Oct lastSun 3:30 0 -
Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S
Rule HK 1953 only - Nov 1 3:30 0 -
Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S
Rule HK 1954 only - Oct 31 3:30 0 -
Rule HK 1955 1964 - Nov Sun>=1 3:30 0 -
Rule HK 1965 1977 - Apr Sun>=16 3:30 1:00 S
Rule HK 1965 1977 - Oct Sun>=16 3:30 0 -
Rule HK 1979 1980 - May Sun>=8 3:30 1:00 S
Rule HK 1979 1980 - Oct Sun>=16 3:30 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Hong_Kong 7:36:36 - LMT 1904 Oct 30
8:00 HK HK%sT
###############################################################################
# Taiwan
# Shanks writes that Taiwan observed DST during 1945, when it
# was still controlled by Japan. This is hard to believe, but we don't
# have any other information.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Taiwan 1945 1951 - May 1 0:00 1:00 D
Rule Taiwan 1945 1951 - Oct 1 0:00 0 S
Rule Taiwan 1952 only - Mar 1 0:00 1:00 D
Rule Taiwan 1952 1954 - Nov 1 0:00 0 S
Rule Taiwan 1953 1959 - Apr 1 0:00 1:00 D
Rule Taiwan 1955 1961 - Oct 1 0:00 0 S
Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D
Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D
Rule Taiwan 1974 1975 - Oct 1 0:00 0 S
Rule Taiwan 1980 only - Jun 30 0:00 1:00 D
Rule Taiwan 1980 only - Sep 30 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Taipei 8:06:00 - LMT 1896 # or Taibei or T'ai-pei
8:00 Taiwan C%sT
# Macau (Macao, Aomen)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 S
Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 -
Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 S
Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 S
Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 S
Rule Macau 1965 only - Oct 31 0:00 0 -
Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 S
Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 -
Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 S
Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 -
Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 -
Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S
Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S
Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Macau 7:34:20 - LMT 1912
8:00 Macau MO%sT 1999 Dec 20 # return to China
8:00 PRC C%sT
###############################################################################
# Cyprus
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cyprus 1975 only - Apr 13 0:00 1:00 S
Rule Cyprus 1975 only - Oct 12 0:00 0 -
Rule Cyprus 1976 only - May 15 0:00 1:00 S
Rule Cyprus 1976 only - Oct 11 0:00 0 -
Rule Cyprus 1977 1980 - Apr Sun>=1 0:00 1:00 S
Rule Cyprus 1977 only - Sep 25 0:00 0 -
Rule Cyprus 1978 only - Oct 2 0:00 0 -
Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 -
Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14
2:00 Cyprus EE%sT 1998 Sep
2:00 EUAsia EE%sT
# IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
# Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
# However, for various reasons many users expect to find it under Europe.
Link Asia/Nicosia Europe/Nicosia
# Georgia
# From Paul Eggert <eggert@twinsun.com> (1994-11-19):
# Today's _Economist_ (p 60) reports that Georgia moved its clocks forward
# an hour recently, due to a law proposed by Zurab Murvanidze,
# an MP who went on a hunger strike for 11 days to force discussion about it!
# We have no details, but we'll guess they didn't move the clocks back in fall.
#
# From Mathew Englander <mathew@io.org>, quoting AP (1996-10-23 13:05-04):
# Instead of putting back clocks at the end of October, Georgia
# will stay on daylight savings time this winter to save energy,
# President Eduard Shevardnadze decreed Wednesday.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tbilisi 2:59:16 - LMT 1880
2:59:16 - TBMT 1924 May 2 # Tbilisi Mean Time
3:00 - TBIT 1957 Mar # Tbilisi Time
4:00 RussiaAsia TBI%sT 1991 Mar 31 2:00s
3:00 1:00 TBIST 1991 Apr 9 # independence
3:00 RussiaAsia GE%sT 1992 # Georgia Time
3:00 E-EurAsia GE%sT 1994 Sep lastSun
4:00 E-EurAsia GE%sT 1996 Oct lastSun
4:00 1:00 GEST 1997 Mar lastSun
4:00 E-EurAsia GE%sT
# East Timor
# From Joao Carrascalao, brother of the former governor of East Timor, in
# <a href="http://etan.org/et99c/december/26-31/30ETMAY.htm">
# East Timor may be late for its millennium
# </a> (1999-12-26/31):
# Portugal tried to change the time forward in 1974 because the sun
# rises too early but the suggestion raised a lot of problems with the
# Timorese and I still don't think it would work today because it
# conflicts with their way of life.
# From Paul Eggert (2000-12-04):
# We don't have any record of the above attempt.
# Most likely our records are incomplete, but we have no better data.
# <a href="http://www.hri.org/news/world/undh/last/00-08-16.undh.html">
# From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General
# (2000-08-16)</a>:
# The Cabinet of the East Timor Transition Administration decided
# today to advance East Timor's time by one hour. The time change,
# which will be permanent, with no seasonal adjustment, will happen at
# midnight on Saturday, September 16.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dili 8:22:20 - LMT 1912
8:00 - TPT 1942 Feb 21 23:00 # E Timor Time
9:00 - JST 1945 Aug
9:00 - TPT 1976 May 3
8:00 - CIT 2000 Sep 17 00:00
9:00 - TPT
# India
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Calcutta 5:53:28 - LMT 1880
5:53:20 - HMT 1941 Oct # Howrah Mean Time?
6:30 - BURT 1942 May 15 # Burma Time
5:30 - IST 1942 Sep
5:30 1:00 IST 1945 Oct 15
5:30 - IST
# The following are like Asia/Calcutta:
# Andaman Is
# Lakshadweep (Laccadive, Minicoy and Amindivi Is)
# Nicobar Is
# Indonesia
#
# From Gwillim Law (2001-05-28), overriding Shanks:
# <http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime>
# says that Indonesia's time zones changed on 1988-01-01. Looking at some
# time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
# and Kalimantan Tengah) switching from UTC+8 to UTC+7.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10
# Shanks says the next transition was at 1924 Jan 1 0:13,
# but this must be a typo.
7:07:12 - JMT 1923 Dec 31 23:47:12 # Jakarta
7:20 - JAVT 1932 Nov # Java Time
7:30 - WIT 1942 Mar 23
9:00 - JST 1945 Aug
7:30 - WIT 1948 May
8:00 - WIT 1950 May
7:30 - WIT 1964
7:00 - WIT
Zone Asia/Pontianak 7:17:20 - LMT 1908 May
7:17:20 - PMT 1932 Nov # Pontianak MT
7:30 - WIT 1942 Jan 29
9:00 - JST 1945 Aug
7:30 - WIT 1948 May
8:00 - WIT 1950 May
7:30 - WIT 1964
8:00 - CIT 1988 Jan 1
7:00 - WIT
Zone Asia/Makassar 7:57:36 - LMT 1920
7:57:36 - MMT 1932 Nov # Macassar MT
8:00 - CIT 1942 Feb 9
9:00 - JST 1945 Aug
8:00 - CIT
Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
9:00 - EIT 1944
9:30 - CST 1964
9:00 - EIT
# Iran
# From Roozbeh Pournader (2003-03-15):
# This is an English translation of what I just found (originally in Persian).
# The Gregorian dates in brackets are mine:
#
# Official Newspaper No. 13548-1370/6/25 [1991-09-16]
# No. 16760/T233 H 1370/6/10 [1991-09-01]
#
# The Rule About Change of the Official Time of the Country
#
# The Board of Ministers, in the meeting dated 1370/5/23 [1991-08-14],
# based on the suggestion number 2221/D dated 1370/4/22 [1991-07-13]
# of the Country's Organization for Official and Employment Affairs,
# and referring to the law for equating the working hours of workers
# and officers in the whole country dated 1359/4/23 [1980-07-14], and
# for synchronizing the official times of the country, agreed that:
#
# The official time of the country will should move forward one hour
# at the 24[:00] hours of the first day of Farvardin and should return
# to its previous state at the 24[:00] hours of the 30th day of
# Shahrivar.
#
# First Deputy to the President - Hassan Habibi
#
# From personal experience, that agrees with what has been followed
# for at least the last 5 years. Before that, for a few years, the
# date used was the first Thursday night of Farvardin and the last
# Thursday night of Shahrivar, but I can't give exact dates....
# I have also changed the abbreviations to what is considered correct
# here in Iran, IRST for regular time and IRDT for daylight saving time.
# From Paul Eggert (2003-03-15)
# Go with Shanks before September 1991, and with Pournader thereafter.
# I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates.
# The Persian calendar is based on the sun, and dates after around 2050
# are approximate; stop after 2037 when 32-bit time_t's overflow.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Iran 1978 1980 - Mar 21 0:00 1:00 D
Rule Iran 1978 only - Oct 21 0:00 0 S
Rule Iran 1979 only - Sep 19 0:00 0 S
Rule Iran 1980 only - Sep 23 0:00 0 S
Rule Iran 1991 only - May 3 0:00 1:00 D
Rule Iran 1992 1995 - Mar 22 0:00 1:00 D
Rule Iran 1991 1995 - Sep 22 0:00 0 S
Rule Iran 1996 only - Mar 21 0:00 1:00 D
Rule Iran 1996 only - Sep 21 0:00 0 S
Rule Iran 1997 1999 - Mar 22 0:00 1:00 D
Rule Iran 1997 1999 - Sep 22 0:00 0 S
Rule Iran 2000 only - Mar 21 0:00 1:00 D
Rule Iran 2000 only - Sep 21 0:00 0 S
Rule Iran 2001 2003 - Mar 22 0:00 1:00 D
Rule Iran 2001 2003 - Sep 22 0:00 0 S
Rule Iran 2004 only - Mar 21 0:00 1:00 D
Rule Iran 2004 only - Sep 21 0:00 0 S
Rule Iran 2005 2007 - Mar 22 0:00 1:00 D
Rule Iran 2005 2007 - Sep 22 0:00 0 S
Rule Iran 2008 only - Mar 21 0:00 1:00 D
Rule Iran 2008 only - Sep 21 0:00 0 S
Rule Iran 2009 2011 - Mar 22 0:00 1:00 D
Rule Iran 2009 2011 - Sep 22 0:00 0 S
Rule Iran 2012 only - Mar 21 0:00 1:00 D
Rule Iran 2012 only - Sep 21 0:00 0 S
Rule Iran 2013 2015 - Mar 22 0:00 1:00 D
Rule Iran 2013 2015 - Sep 22 0:00 0 S
Rule Iran 2016 only - Mar 21 0:00 1:00 D
Rule Iran 2016 only - Sep 21 0:00 0 S
Rule Iran 2017 2019 - Mar 22 0:00 1:00 D
Rule Iran 2017 2019 - Sep 22 0:00 0 S
Rule Iran 2020 only - Mar 21 0:00 1:00 D
Rule Iran 2020 only - Sep 21 0:00 0 S
Rule Iran 2021 2023 - Mar 22 0:00 1:00 D
Rule Iran 2021 2023 - Sep 22 0:00 0 S
Rule Iran 2024 2025 - Mar 21 0:00 1:00 D
Rule Iran 2024 2025 - Sep 21 0:00 0 S
Rule Iran 2026 2027 - Mar 22 0:00 1:00 D
Rule Iran 2026 2027 - Sep 22 0:00 0 S
Rule Iran 2028 2029 - Mar 21 0:00 1:00 D
Rule Iran 2028 2029 - Sep 21 0:00 0 S
Rule Iran 2030 2031 - Mar 22 0:00 1:00 D
Rule Iran 2030 2031 - Sep 22 0:00 0 S
Rule Iran 2032 2033 - Mar 21 0:00 1:00 D
Rule Iran 2032 2033 - Sep 21 0:00 0 S
Rule Iran 2034 2035 - Mar 22 0:00 1:00 D
Rule Iran 2034 2035 - Sep 22 0:00 0 S
Rule Iran 2036 2037 - Mar 21 0:00 1:00 D
Rule Iran 2036 2037 - Sep 21 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tehran 3:25:44 - LMT 1916
3:25:44 - TMT 1946 # Tehran Mean Time
3:30 - IRST 1977 Nov
4:00 Iran IR%sT 1979
3:30 Iran IR%sT
# Iraq
#
# From Jonathan Lennox <lennox@cs.columbia.edu> (2000-06-12):
# An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
# the U.S. edition) on the Iraqi Kurds contains a paragraph:
# "The three northern provinces ... switched their clocks this spring and
# are an hour ahead of Baghdad."
#
# But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows:
# In the past, some Kurdish nationalists, as a protest to the Iraqi
# Government, did not adhere to daylight saving time. They referred
# to daylight saving as Saddam time. But, as of today, the time zone
# in Iraqi-Kurdistan is on standard time with Baghdad, Iraq.
#
# So we'll ignore the Economist's claim.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Iraq 1982 only - May 1 0:00 1:00 D
Rule Iraq 1982 1984 - Oct 1 0:00 0 S
Rule Iraq 1983 only - Mar 31 0:00 1:00 D
Rule Iraq 1984 1985 - Apr 1 0:00 1:00 D
Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 S
Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 D
# IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the `:01' is a typo.
# Shanks says Iraq did not observe DST 1992/1997 or 1999 on; ignore this.
Rule Iraq 1991 max - Apr 1 3:00s 1:00 D
Rule Iraq 1991 max - Oct 1 3:00s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Baghdad 2:57:40 - LMT 1890
2:57:36 - BMT 1918 # Baghdad Mean Time?
3:00 - AST 1982 May
3:00 Iraq A%sT
###############################################################################
# Israel
# From Ephraim Silverberg (2001-01-11):
#
# I coined "IST/IDT" circa 1988. Until then there were three
# different abbreviations in use:
#
# JST Jerusalem Standard Time [Danny Braniss, Hebrew University]
# IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
# EEST Eastern Europe Standard Time [used by almost everyone else]
#
# Since timezones should be called by country and not capital cities,
# I ruled out JST. As Israel is in Asia Minor and not Eastern Europe,
# EEST was equally unacceptable. Since "zonal" was not compatible with
# any other timezone abbreviation, I felt that 'IST' was the way to go
# and, indeed, it has received almost universal acceptance in timezone
# settings in Israeli computers.
#
# In any case, I am happy to share timezone abbreviations with India,
# high on my favorite-country list (and not only because my wife's
# family is from India).
# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Zion 1940 only - Jun 1 0:00 1:00 D
Rule Zion 1942 1944 - Nov 1 0:00 0 S
Rule Zion 1943 only - Apr 1 2:00 1:00 D
Rule Zion 1944 only - Apr 1 0:00 1:00 D
Rule Zion 1945 only - Apr 16 0:00 1:00 D
Rule Zion 1945 only - Nov 1 2:00 0 S
Rule Zion 1946 only - Apr 16 2:00 1:00 D
Rule Zion 1946 only - Nov 1 0:00 0 S
Rule Zion 1948 only - May 23 0:00 2:00 DD
Rule Zion 1948 only - Sep 1 0:00 1:00 D
Rule Zion 1948 1949 - Nov 1 2:00 0 S
Rule Zion 1949 only - May 1 0:00 1:00 D
Rule Zion 1950 only - Apr 16 0:00 1:00 D
Rule Zion 1950 only - Sep 15 3:00 0 S
Rule Zion 1951 only - Apr 1 0:00 1:00 D
Rule Zion 1951 only - Nov 11 3:00 0 S
Rule Zion 1952 only - Apr 20 2:00 1:00 D
Rule Zion 1952 only - Oct 19 3:00 0 S
Rule Zion 1953 only - Apr 12 2:00 1:00 D
Rule Zion 1953 only - Sep 13 3:00 0 S
Rule Zion 1954 only - Jun 13 0:00 1:00 D
Rule Zion 1954 only - Sep 12 0:00 0 S
Rule Zion 1955 only - Jun 11 2:00 1:00 D
Rule Zion 1955 only - Sep 11 0:00 0 S
Rule Zion 1956 only - Jun 3 0:00 1:00 D
Rule Zion 1956 only - Sep 30 3:00 0 S
Rule Zion 1957 only - Apr 29 2:00 1:00 D
Rule Zion 1957 only - Sep 22 0:00 0 S
Rule Zion 1974 only - Jul 7 0:00 1:00 D
Rule Zion 1974 only - Oct 13 0:00 0 S
Rule Zion 1975 only - Apr 20 0:00 1:00 D
Rule Zion 1975 only - Aug 31 0:00 0 S
Rule Zion 1985 only - Apr 14 0:00 1:00 D
Rule Zion 1985 only - Sep 15 0:00 0 S
Rule Zion 1986 only - May 18 0:00 1:00 D
Rule Zion 1986 only - Sep 7 0:00 0 S
Rule Zion 1987 only - Apr 15 0:00 1:00 D
Rule Zion 1987 only - Sep 13 0:00 0 S
Rule Zion 1988 only - Apr 9 0:00 1:00 D
Rule Zion 1988 only - Sep 3 0:00 0 S
# From Ephraim Silverberg <ephraim@cs.huji.ac.il>
# (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17 and 2000-07-25):
# According to the Office of the Secretary General of the Ministry of
# Interior, there is NO set rule for Daylight-Savings/Standard time changes.
# One thing is entrenched in law, however: that there must be at least 150
# days of daylight savings time annually. From 1993-1998, the change to
# daylight savings time was on a Friday morning from midnight IST to
# 1 a.m IDT; up until 1998, the change back to standard time was on a
# Saturday night from midnight daylight savings time to 11 p.m. standard
# time. 1996 is an exception to this rule where the change back to standard
# time took place on Sunday night instead of Saturday night to avoid
# conflicts with the Jewish New Year. In 1999, the change to
# daylight savings time was still on a Friday morning but from
# 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time
# was also on a Friday morning from 2 a.m. IDT to 1 a.m. IST for
# 1999 only. In the year 2000, the change to daylight savings time was
# similar to 1999, but although the change back will be on a Friday, it
# will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all
# changes to/from will take place at 1 a.m. old time, but now there is no
# rule as to what day of the week it will take place in as the start date
# (except in 2003) is the night after the Passover Seder (i.e. the eve
# of the 16th of Nisan in the lunar Hebrew calendar) and the end date
# (except in 2002) is three nights before Yom Kippur [Day of Atonement]
# (the eve of the 7th of Tishrei in the lunar Hebrew calendar).
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Zion 1989 only - Apr 30 0:00 1:00 D
Rule Zion 1989 only - Sep 3 0:00 0 S
Rule Zion 1990 only - Mar 25 0:00 1:00 D
Rule Zion 1990 only - Aug 26 0:00 0 S
Rule Zion 1991 only - Mar 24 0:00 1:00 D
Rule Zion 1991 only - Sep 1 0:00 0 S
Rule Zion 1992 only - Mar 29 0:00 1:00 D
Rule Zion 1992 only - Sep 6 0:00 0 S
Rule Zion 1993 only - Apr 2 0:00 1:00 D
Rule Zion 1993 only - Sep 5 0:00 0 S
# The dates for 1994-1995 were obtained from Office of the Spokeswoman for the
# Ministry of Interior, Jerusalem, Israel. The spokeswoman can be reached by
# calling the office directly at 972-2-6701447 or 972-2-6701448.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Zion 1994 only - Apr 1 0:00 1:00 D
Rule Zion 1994 only - Aug 28 0:00 0 S
Rule Zion 1995 only - Mar 31 0:00 1:00 D
Rule Zion 1995 only - Sep 3 0:00 0 S
# The dates for 1996 were determined by the Minister of Interior of the
# time, Haim Ramon. The official announcement regarding 1996-1998
# (with the dates for 1997-1998 no longer being relevant) can be viewed at:
#
# ftp://ftp.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
#
# The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa.
#
# The official announcements for the years 1997-1999 can be viewed at:
#
# ftp://ftp.huji.ac.il/pub/tz/announcements/YYYY.ps.gz
#
# where YYYY is the relevant year.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Zion 1996 only - Mar 15 0:00 1:00 D
Rule Zion 1996 only - Sep 16 0:00 0 S
Rule Zion 1997 only - Mar 21 0:00 1:00 D
Rule Zion 1997 only - Sep 14 0:00 0 S
Rule Zion 1998 only - Mar 20 0:00 1:00 D
Rule Zion 1998 only - Sep 6 0:00 0 S
Rule Zion 1999 only - Apr 2 2:00 1:00 D
Rule Zion 1999 only - Sep 3 2:00 0 S
# The Knesset Interior Committee has changed the dates for 2000 for
# the third time in just over a year and have set new dates for the
# years 2001-2004 as well.
#
# The official announcement for the start date of 2000 can be viewed at:
#
# ftp://ftp.huji.ac.il/pub/tz/announcements/2000-start.ps.gz
#
# The official announcement for the end date of 2000 and the dates
# for the years 2001-2004 can be viewed at:
#
# ftp://ftp.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Zion 2000 only - Apr 14 2:00 1:00 D
Rule Zion 2000 only - Oct 6 1:00 0 S
Rule Zion 2001 only - Apr 9 1:00 1:00 D
Rule Zion 2001 only - Sep 24 1:00 0 S
Rule Zion 2002 only - Mar 29 1:00 1:00 D
Rule Zion 2002 only - Oct 7 1:00 0 S
Rule Zion 2003 only - Mar 28 1:00 1:00 D
Rule Zion 2003 only - Oct 3 1:00 0 S
Rule Zion 2004 only - Apr 7 1:00 1:00 D
Rule Zion 2004 only - Sep 22 1:00 0 S
# From Paul Eggert (2000-07-25):
# Here are guesses for rules after 2004.
# They are probably wrong, but they are more likely than no DST at all.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Zion 2005 max - Apr 1 1:00 1:00 D
Rule Zion 2005 max - Oct 1 1:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Jerusalem 2:20:56 - LMT 1880
2:20:40 - JMT 1918 # Jerusalem Mean Time?
2:00 Zion I%sT
# From Ephraim Silverberg (2003-03-23):
#
# Minister of Interior Poraz has announced that he will respect the law
# passed in July 2000 (proposed at the time jointly by himself and
# then-MK David Azulai [Shas]) fixing the dates for 2000-2004. Hence,
# the dates for 2003 and 2004 remain unchanged....
#
# As far as 2005 and beyond, no dates have been set. However, the
# minister has mentioned that he wishes to propose to move Israel's
# timezone in 2005 from GMT+2 to GMT+3 and upon that have DST during
# the summer months (i.e. GMT+4). However, no legislation in this
# direction is expected until the latter part of 2004 which is a long
# time off in terms of Israeli politics.
###############################################################################
# Japan
# `9:00' and `JST' is from Guy Harris.
# From Paul Eggert <eggert@twinsun.com> (1995-03-06):
# Today's _Asahi Evening News_ (page 4) reports that Japan had
# daylight saving between 1948 and 1951, but ``the system was discontinued
# because the public believed it would lead to longer working hours.''
# Shanks writes that daylight saving in Japan during those years was as follows:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
#Rule Japan 1948 only - May Sun>=1 2:00 1:00 D
#Rule Japan 1948 1951 - Sep Sat>=8 2:00 0 S
#Rule Japan 1949 only - Apr Sun>=1 2:00 1:00 D
#Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
# but the only locations using it were US military bases.
# We go with Shanks and omit daylight saving in those years for Asia/Tokyo.
# From Hideyuki Suzuki (1998-11-09):
# 'Tokyo' usually stands for the former location of Tokyo Astronomical
# Observatory: E 139 44' 40".90 (9h 18m 58s.727), N 35 39' 16".0.
# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
# edited by National Astronomical Observatory of Japan....
# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
# The law is enacted on 1886-07-07.
# From Hideyuki Suzuki (1998-11-16):
# The ordinance No. 51 (1886) established "standard time" in Japan,
# which stands for the time on E 135 degree.
# In the ordinance No. 167 (1895), "standard time" was renamed to "central
# standard time". And the same ordinance also established "western standard
# time", which stands for the time on E 120 degree.... But "western standard
# time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
# 167, there is no mention regarding for what place western standard time is
# standard....
#
# I wrote "ordinance" above, but I don't know how to translate.
# In Japanese it's "chokurei", which means ordinance from emperor.
# Shanks claims JST in use since 1896, and that a few places (e.g. Ishigaki)
# use +0800; go with Suzuki. Guess that all ordinances took effect on Jan 1.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
9:00 - JST 1896
9:00 - CJT 1938
9:00 - JST
# Since 1938, all Japanese possessions have been like Asia/Tokyo.
# Jordan
#
# From <a href="http://star.arabia.com/990701/JO9.html">
# Jordan Week (1999-07-01) </a> via Steffen Thorsen (1999-09-09):
# Clocks in Jordan were forwarded one hour on Wednesday at midnight,
# in accordance with the government's decision to implement summer time
# all year round.
#
# From <a href="http://star.arabia.com/990930/JO9.html">
# Jordan Week (1999-09-30) </a> via Steffen Thorsen (1999-11-09):
# Winter time starts today Thursday, 30 September. Clocks will be turned back
# by one hour. This is the latest government decision and it's final!
# The decision was taken because of the increase in working hours in
# government's departments from six to seven hours.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Jordan 1973 only - Jun 6 0:00 1:00 S
Rule Jordan 1973 1975 - Oct 1 0:00 0 -
Rule Jordan 1974 1977 - May 1 0:00 1:00 S
Rule Jordan 1976 only - Nov 1 0:00 0 -
Rule Jordan 1977 only - Oct 1 0:00 0 -
Rule Jordan 1978 only - Apr 30 0:00 1:00 S
Rule Jordan 1978 only - Sep 30 0:00 0 -
Rule Jordan 1985 only - Apr 1 0:00 1:00 S
Rule Jordan 1985 only - Oct 1 0:00 0 -
Rule Jordan 1986 1988 - Apr Fri>=1 0:00 1:00 S
Rule Jordan 1986 1990 - Oct Fri>=1 0:00 0 -
Rule Jordan 1989 only - May 8 0:00 1:00 S
Rule Jordan 1990 only - Apr 27 0:00 1:00 S
Rule Jordan 1991 only - Apr 17 0:00 1:00 S
Rule Jordan 1991 only - Sep 27 0:00 0 -
Rule Jordan 1992 only - Apr 10 0:00 1:00 S
Rule Jordan 1992 1993 - Oct Fri>=1 0:00 0 -
Rule Jordan 1993 1998 - Apr Fri>=1 0:00 1:00 S
Rule Jordan 1994 only - Sep Fri>=15 0:00 0 -
Rule Jordan 1995 1998 - Sep Fri>=15 0:00s 0 -
Rule Jordan 1999 only - Jul 1 0:00s 1:00 S
Rule Jordan 1999 max - Sep lastThu 0:00s 0 -
Rule Jordan 2000 max - Mar lastThu 0:00s 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Amman 2:23:44 - LMT 1931
2:00 Jordan EE%sT
# Kazakhstan
# From Paul Eggert (1996-11-22):
# Andrew Evtichov <evti@chevron.com> (1996-04-13) writes that Kazakhstan
# stayed in sync with Moscow after 1990, and that Aqtobe (formerly Aktyubinsk)
# and Aqtau (formerly Shevchenko) are the largest cities in their zones.
# Guess that Aqtau and Aqtobe diverged in 1995, since that's the first time
# IATA SSIM mentions a third time zone in Kazakhstan.
#
# From Paul Eggert (2001-10-18):
# German Iofis, ELSI, Almaty (2001-10-09) reports that Kazakhstan uses
# RussiaAsia rules, instead of switching at 00:00 as the IATA has it.
# Go with Shanks, who has them always using RussiaAsia rules.
# Also go with the following claims of Shanks:
#
# - Kazakhstan did not observe DST in 1991.
# - Qyzylorda switched from +5:00 to +6:00 on 1992-01-19 02:00.
# - Oral switched from +5:00 to +4:00 in spring 1989.
#
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
# Almaty (formerly Alma-Ata), representing most locations in Kazakhstan
Zone Asia/Almaty 5:07:48 - LMT 1924 May 2 # or Alma-Ata
5:00 - ALMT 1930 Jun 21 # Alma-Ata Time
6:00 RussiaAsia ALM%sT 1991
6:00 - ALMT 1992
6:00 RussiaAsia ALM%sT
# Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.)
Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2
4:00 - KIZT 1930 Jun 21 # Kizilorda Time
5:00 - KIZT 1981 Apr 1
5:00 1:00 KIZST 1981 Oct 1
6:00 - KIZT 1982 Apr 1
5:00 RussiaAsia KIZ%sT 1991
5:00 - KIZT 1991 Dec 16 # independence
5:00 - QYZT 1992 Jan 19 2:00
6:00 RussiaAsia QYZ%sT
# Aqtobe (aka Aktobe, formerly Akt'ubinsk)
Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2
4:00 - AKTT 1930 Jun 21 # Aktyubinsk Time
5:00 - AKTT 1981 Apr 1
5:00 1:00 AKTST 1981 Oct 1
6:00 - AKTT 1982 Apr 1
5:00 RussiaAsia AKT%sT 1991
5:00 - AKTT 1991 Dec 16 # independence
5:00 RussiaAsia AQT%sT # Aqtobe Time
# Mangghystau
# Aqtau was not founded until 1963, but it represents an inhabited region,
# so include time stamps before 1963.
Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2
4:00 - FORT 1930 Jun 21 # Fort Shevchenko T
5:00 - FORT 1963
5:00 - SHET 1981 Oct 1 # Shevchenko Time
6:00 - SHET 1982 Apr 1
5:00 RussiaAsia SHE%sT 1991
5:00 - SHET 1991 Dec 16 # independence
5:00 RussiaAsia AQT%sT 1995 Mar lastSun 2:00 # Aqtau Time
4:00 RussiaAsia AQT%sT
# West Kazakhstan
Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk
4:00 - URAT 1930 Jun 21 # Ural'sk time
5:00 - URAT 1981 Apr 1
5:00 1:00 URAST 1981 Oct 1
6:00 - URAT 1982 Apr 1
5:00 RussiaAsia URA%sT 1989 Mar 26 2:00
4:00 RussiaAsia URA%sT 1991
4:00 - URAT 1991 Dec 16 # independence
4:00 RussiaAsia ORA%sT # Oral Time
# Kyrgyzstan (Kirgizstan)
# Transitions through 1991 are from Shanks.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Kirgiz 1992 1996 - Apr Sun>=7 0:00s 1:00 S
Rule Kirgiz 1992 1996 - Sep lastSun 0:00 0 -
Rule Kirgiz 1997 max - Mar lastSun 2:30 1:00 S
Rule Kirgiz 1997 max - Oct lastSun 2:30 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
5:00 - FRUT 1930 Jun 21 # Frunze Time
6:00 RussiaAsia FRU%sT 1991 Mar 31 2:00s
5:00 1:00 FRUST 1991 Aug 31 2:00 # independence
5:00 Kirgiz KG%sT # Kirgizstan Time
###############################################################################
# Korea (North and South)
# From Guy Harris:
# According to someone at the Korean Times in San Francisco,
# Daylight Savings Time was not observed until 1987. He did not know
# at what time of day DST starts or ends.
# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule ROK 1960 only - May 15 0:00 1:00 D
Rule ROK 1960 only - Sep 13 0:00 0 S
Rule ROK 1987 1988 - May Sun<=14 0:00 1:00 D
Rule ROK 1987 1988 - Oct Sun<=14 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Seoul 8:27:52 - LMT 1890
8:30 - KST 1904 Dec
9:00 - KST 1928
8:30 - KST 1932
9:00 - KST 1954 Mar 21
8:00 ROK K%sT 1961 Aug 10
8:30 - KST 1968 Oct
9:00 ROK K%sT
Zone Asia/Pyongyang 8:23:00 - LMT 1890
8:30 - KST 1904 Dec
9:00 - KST 1928
8:30 - KST 1932
9:00 - KST 1954 Mar 21
8:00 - KST 1961 Aug 10
9:00 - KST
###############################################################################
# Kuwait
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kuwait 3:11:56 - LMT 1950
3:00 - AST
# Laos
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Vientiane 6:50:24 - LMT 1906 Jun 9 # or Viangchan
7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
7:00 - ICT 1912 May
8:00 - ICT 1931 May
7:00 - ICT
# Lebanon
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Lebanon 1920 only - Mar 28 0:00 1:00 S
Rule Lebanon 1920 only - Oct 25 0:00 0 -
Rule Lebanon 1921 only - Apr 3 0:00 1:00 S
Rule Lebanon 1921 only - Oct 3 0:00 0 -
Rule Lebanon 1922 only - Mar 26 0:00 1:00 S
Rule Lebanon 1922 only - Oct 8 0:00 0 -
Rule Lebanon 1923 only - Apr 22 0:00 1:00 S
Rule Lebanon 1923 only - Sep 16 0:00 0 -
Rule Lebanon 1957 1961 - May 1 0:00 1:00 S
Rule Lebanon 1957 1961 - Oct 1 0:00 0 -
Rule Lebanon 1972 only - Jun 22 0:00 1:00 S
Rule Lebanon 1972 1977 - Oct 1 0:00 0 -
Rule Lebanon 1973 1977 - May 1 0:00 1:00 S
Rule Lebanon 1978 only - Apr 30 0:00 1:00 S
Rule Lebanon 1978 only - Sep 30 0:00 0 -
Rule Lebanon 1984 1987 - May 1 0:00 1:00 S
Rule Lebanon 1984 1991 - Oct 16 0:00 0 -
Rule Lebanon 1988 only - Jun 1 0:00 1:00 S
Rule Lebanon 1989 only - May 10 0:00 1:00 S
Rule Lebanon 1990 1992 - May 1 0:00 1:00 S
Rule Lebanon 1992 only - Oct 4 0:00 0 -
Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Beirut 2:22:00 - LMT 1880
2:00 Lebanon EE%sT
# Malaysia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 TS # one-Third Summer
Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
#
# peninsular Malaysia
# From Paul Eggert (2003-11-01):
# The data here are taken from Mok Ly Yng (2003-10-30)
# <http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html>.
# Before 1901, Penang, Malacca and Singapore each had their own time zone;
# assume Kuala Lumpur used Malaccan time.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kuala_Lumpur 6:46:48 - LMT 1880
6:49:00 - MMT 1901 Jan 1 # Malacca Mean Time
6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
7:00 - MALT 1933 Jan 1 # Malaya Time
7:00 0:20 MALST 1936
7:20 - MALT 1941 Sep 1
7:30 - MALT 1942 Feb 16
9:00 - JST 1945 Sep 12
7:30 - MALT 1982 Jan 1
8:00 - MYT # Malaysia Time
# Sabah & Sarawak
# From Paul Eggert (2003-11-01):
# The data here are mostly from Shanks, but the 1942, 1945 and 1982
# transition dates are from Mok Ly Yng.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
7:30 - BORT 1933 # Borneo Time
8:00 NBorneo BOR%sT 1942 Feb 16
9:00 - JST 1945 Sep 12
8:00 - BORT 1982 Jan 1
8:00 - MYT
# Maldives
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
4:54:00 - MMT 1960 # Male Mean Time
5:00 - MVT # Maldives Time
# Mongolia
# Shanks says that Mongolia has three time zones, but usno1995 and the CIA map
# Standard Time Zones of the World (1997-01)
# both say that it has just one.
# From Oscar van Vlijmen (1999-12-11):
# <a href="http://www.mongoliatourism.gov.mn/general.htm">
# General Information Mongolia
# </a> (1999-09)
# "Time: Mongolia has two time zones. Three westernmost provinces of
# Bayan-Ulgii, Uvs, and Hovd are one hour earlier than the capital city, and
# the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus
# eight hours."
# From Rives McDow (1999-12-13):
# Mongolia discontinued the use of daylight savings time in 1999; 1998
# being the last year it was implemented. The dates of implementation I am
# unsure of, but most probably it was similar to Russia, except for the time
# of implementation may have been different....
# Some maps in the past have indicated that there was an additional time
# zone in the eastern part of Mongolia, including the provinces of Dornod,
# Suhbaatar, and possibly Khentij.
# From Paul Eggert (1999-12-15):
# Naming and spelling is tricky in Mongolia.
# We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone;
# the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us,
# and sometimes Jirgalanta (with variant spellings), but the name Hovd
# is good enough for our purposes.
# From Rives McDow (2001-05-13):
# In addition to Mongolia starting daylight savings as reported earlier
# (adopted DST on 2001-04-27 02:00 local time, ending 2001-09-28),
# there are three time zones.
#
# Provinces [at 7:00]: Bayan-ulgii, Uvs, Khovd, Zavkhan, Govi-Altai
# Provinces [at 8:00]: Khovsgol, Bulgan, Arkhangai, Khentii, Tov,
# Bayankhongor, Ovorkhangai, Dundgovi, Dornogovi, Omnogovi
# Provinces [at 9:00]: Dornod, Sukhbaatar
#
# [The province of Selenge is omitted from the above lists.]
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S
Rule Mongol 1983 only - Oct 1 0:00 0 -
# IATA SSIM says 1990s switches occurred at 00:00, but Shanks (1995) lists
# them at 02:00s, and McDow says the 2001 switches also occurred at 02:00.
# Also, IATA SSIM (1996-09) says 1996-10-25. Go with Shanks through 1998.
Rule Mongol 1985 1998 - Mar lastSun 2:00s 1:00 S
Rule Mongol 1984 1998 - Sep lastSun 2:00s 0 -
# IATA SSIM (1999-09) says Mongolia no longer observes DST.
Rule Mongol 2001 only - Apr 27 2:00s 1:00 S
Rule Mongol 2001 only - Sep 28 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
6:00 - HOVT 1978 # Hovd Time
7:00 Mongol HOV%sT
# Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
7:00 - ULAT 1978 # Ulaanbaatar Time
8:00 Mongol ULA%sT
# Choibalsan, a.k.a. Bajan Tuemen, Bajan Tumen, Chojbalsan,
# Choybalsan, Sanbejse, Tchoibalsan
Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
7:00 - ULAT 1978
8:00 - ULAT 1983 Apr
9:00 Mongol CHO%sT # Choibalsan Time
# Nepal
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Katmandu 5:41:16 - LMT 1920
5:30 - IST 1986
5:45 - NPT # Nepal Time
# Oman
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Muscat 3:54:20 - LMT 1920
4:00 - GST
# Pakistan
# From Rives McDow (2002-03-13):
# I have been advised that Pakistan has decided to adopt dst on a
# TRIAL basis for one year, starting 00:01 local time on April 7, 2002
# and ending at 00:01 local time October 6, 2002. This is what I was
# told, but I believe that the actual time of change may be 00:00; the
# 00:01 was to make it clear which day it was on.
# From Paul Eggert (2002-03-15):
# Jesper Norgaard found this URL:
# http://www.pak.gov.pk/public/news/app/app06_dec.htm
# (dated 2001-12-06) which says that the Cabinet adopted a scheme "to
# advance the clocks by one hour on the night between the first
# Saturday and Sunday of April and revert to the original position on
# 15th October each year". This agrees with McDow's 04-07 at 00:00,
# but disagrees about the October transition, and makes it sound like
# it's not on a trial basis. Also, the "between the first Saturday
# and Sunday of April" phrase, if taken literally, means that the
# transition takes place at 00:00 on the first Sunday on or after 04-02.
# From Paul Eggert (2003-02-09):
# DAWN <http://www.dawn.com/2002/10/06/top13.htm> reported on 2002-10-05
# that 2002 DST ended that day at midnight. Go with McDow for now.
# From Steffen Thorsen (2003-03-14):
# According to http://www.dawn.com/2003/03/07/top15.htm
# there will be no DST in Pakistan this year:
#
# ISLAMABAD, March 6: Information and Media Development Minister Sheikh
# Rashid Ahmed on Thursday said the cabinet had reversed a previous
# decision to advance clocks by one hour in summer and put them back by
# one hour in winter with the aim of saving light hours and energy.
#
# The minister told a news conference that the experiment had rather
# shown 8 per cent higher consumption of electricity.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Pakistan 2002 only - Apr Sun>=2 0:01 1:00 S
Rule Pakistan 2002 only - Oct Sun>=2 0:01 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Karachi 4:28:12 - LMT 1907
5:30 - IST 1942 Sep
5:30 1:00 IST 1945 Oct 15
5:30 - IST 1951 Sep 30
5:00 - KART 1971 Mar 26 # Karachi Time
5:00 Pakistan PK%sT # Pakistan Time
# Palestine
# From Amos Shapir <amos@nsof.co.il> (1998-02-15):
#
# From 1917 until 1948-05-15, all of Palestine, including the parts now
# known as the Gaza Strip and the West Bank, was under British rule.
# Therefore the rules given for Israel for that period, apply there too...
#
# The Gaza Strip was under Egyptian rule between 1948-05-15 until 1967-06-05
# (except a short occupation by Israel from 1956-11 till 1957-03, but no
# time zone was affected then). It was never formally annexed to Egypt,
# though.
#
# The rest of Palestine was under Jordanian rule at that time, formally
# annexed in 1950 as the West Bank (and the word "Trans" was dropped from
# the country's previous name of "the Hashemite Kingdom of the
# Trans-Jordan"). So the rules for Jordan for that time apply. Major
# towns in that area are Nablus (Shchem), El-Halil (Hebron), Ramallah, and
# East Jerusalem.
#
# Both areas were occupied by Israel in June 1967, but not annexed (except
# for East Jerusalem). They were on Israel time since then; there might
# have been a Military Governor's order about time zones, but I'm not aware
# of any (such orders may have been issued semi-annually whenever summer
# time was in effect, but maybe the legal aspect of time was just neglected).
#
# The Palestinian Authority was established in 1993, and got hold of most
# towns in the West Bank and Gaza by 1995. I know that in order to
# demonstrate...independence, they have been switching to
# summer time and back on a different schedule than Israel's, but I don't
# know when this was started, or what algorithm is used (most likely the
# Jordanian one).
#
# To summarize, the table should probably look something like that:
#
# Area \ when | 1918-1947 | 1948-1967 | 1967-1995 | 1996-
# ------------+-----------+-----------+-----------+-----------
# Israel | Zion | Zion | Zion | Zion
# West bank | Zion | Jordan | Zion | Jordan
# Gaza | Zion | Egypt | Zion | Jordan
#
# I guess more info may be available from the PA's web page (if/when they
# have one).
# From Paul Eggert (1998-02-25):
# Shanks writes that Gaza did not observe DST until 1957, but we'll go
# with Shapir and assume that it observed DST from 1940 through 1947,
# and that it used Jordanian rules starting in 1996.
# We don't yet need a separate entry for the West Bank, since
# the only differences between it and Gaza that we know about
# occurred before our cutoff date of 1970.
# However, as we get more information, we may need to add entries
# for parts of the West Bank as they transitioned from Israel's rules
# to Palestine's rules. If you have more info about this, please
# send it to tz@elsie.nci.nih.gov for incorporation into future editions.
# From IINS News Service - Israel - 1998-03-23 10:38:07 Israel time,
# forwarded by Ephraim Silverberg:
#
# Despite the fact that Israel changed over to daylight savings time
# last week, the PLO Authority (PA) has decided not to turn its clocks
# one-hour forward at this time. As a sign of independence from Israeli rule,
# the PA has decided to implement DST in April.
# From Paul Eggert (1999-09-20):
# Daoud Kuttab writes in
# <a href="http://www.jpost.com/com/Archive/22.Apr.1999/Opinion/Article-2.html">
# Holiday havoc
# </a> (Jerusalem Post, 1999-04-22) that
# the Palestinian National Authority changed to DST on 1999-04-15.
# I vaguely recall that they switch back in October (sorry, forgot the source).
# For now, let's assume that the spring switch was at 24:00,
# and that they switch at 0:00 on the 3rd Fridays of April and October.
# The rules for Egypt are stolen from the `africa' file.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 -
Rule EgyptAsia 1958 only - May 1 0:00 1:00 S
Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S
Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 -
Rule EgyptAsia 1966 only - Oct 1 3:00 0 -
Rule Palestine 1999 max - Apr Fri>=15 0:00 1:00 S
Rule Palestine 1999 max - Oct Fri>=15 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
2:00 Zion EET 1948 May 15
2:00 EgyptAsia EE%sT 1967 Jun 5
2:00 Zion I%sT 1996
2:00 Jordan EE%sT 1999
2:00 Palestine EE%sT
# Paracel Is
# no information
# Philippines
# On 1844-08-16, Narciso Claveria, governor-general of the
# Philippines, issued a proclamation announcing that 1844-12-30 was to
# be immediately followed by 1845-01-01. Robert H. van Gent has a
# transcript of the decree in <http://www.phys.uu.nl/~vgent/idl/idl.htm>.
# The rest of this data is from Shanks.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Phil 1936 only - Nov 1 0:00 1:00 S
Rule Phil 1937 only - Feb 1 0:00 0 -
Rule Phil 1954 only - Apr 12 0:00 1:00 S
Rule Phil 1954 only - Jul 1 0:00 0 -
Rule Phil 1978 only - Mar 22 0:00 1:00 S
Rule Phil 1978 only - Sep 21 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
8:04:00 - LMT 1899 May 11
8:00 Phil PH%sT 1942 May
9:00 - JST 1944 Nov
8:00 Phil PH%sT
# Qatar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
4:00 - GST 1972 Jun
3:00 - AST
# Saudi Arabia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1950
3:00 - AST
# Singapore
# The data here are taken from Mok Ly Yng (2003-10-30)
# <http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html>.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Singapore 6:55:25 - LMT 1880
6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
7:00 - MALT 1933 Jan 1 # Malaya Time
7:00 0:20 MALST 1936
7:20 - MALT 1941 Sep 1
7:30 - MALT 1942 Feb 16
9:00 - JST 1945 Sep 12
7:30 - MALT 1965 Aug 9 # independence
7:30 - SGT 1982 Jan 1 # Singapore Time
8:00 - SGT
# Spratly Is
# no information
# Sri Lanka
# From Paul Eggert (1996-09-03):
# "Sri Lanka advances clock by an hour to avoid blackout"
# (www.virtual-pc.com/lankaweb/news/items/240596-2.html, 1996-05-24,
# no longer available as of 1999-08-17)
# reported ``the country's standard time will be put forward by one hour at
# midnight Friday (1830 GMT) `in the light of the present power crisis'.''
#
# From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
# by Shamindra in
# <a href="news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net">
# Daily News - Hot News Section (1996-10-26)
# </a>:
# With effect from 12.30 a.m. on 26th October 1996
# Sri Lanka will be six (06) hours ahead of GMT.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Colombo 5:19:24 - LMT 1880
5:19:32 - MMT 1906 # Moratuwa Mean Time
5:30 - IST 1942 Jan 5
5:30 0:30 IHST 1942 Sep
5:30 1:00 IST 1945 Oct 16 2:00
5:30 - IST 1996 May 25 0:00
6:30 - LKT 1996 Oct 26 0:30
6:00 - LKT
# Syria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Syria 1920 1923 - Apr Sun>=15 2:00 1:00 S
Rule Syria 1920 1923 - Oct Sun>=1 2:00 0 -
Rule Syria 1962 only - Apr 29 2:00 1:00 S
Rule Syria 1962 only - Oct 1 2:00 0 -
Rule Syria 1963 1965 - May 1 2:00 1:00 S
Rule Syria 1963 only - Sep 30 2:00 0 -
Rule Syria 1964 only - Oct 1 2:00 0 -
Rule Syria 1965 only - Sep 30 2:00 0 -
Rule Syria 1966 only - Apr 24 2:00 1:00 S
Rule Syria 1966 1976 - Oct 1 2:00 0 -
Rule Syria 1967 1978 - May 1 2:00 1:00 S
Rule Syria 1977 1978 - Sep 1 2:00 0 -
Rule Syria 1983 1984 - Apr 9 2:00 1:00 S
Rule Syria 1983 1984 - Oct 1 2:00 0 -
Rule Syria 1986 only - Feb 16 2:00 1:00 S
Rule Syria 1986 only - Oct 9 2:00 0 -
Rule Syria 1987 only - Mar 1 2:00 1:00 S
Rule Syria 1987 1988 - Oct 31 2:00 0 -
Rule Syria 1988 only - Mar 15 2:00 1:00 S
Rule Syria 1989 only - Mar 31 2:00 1:00 S
Rule Syria 1989 only - Oct 1 2:00 0 -
Rule Syria 1990 only - Apr 1 2:00 1:00 S
Rule Syria 1990 only - Sep 30 2:00 0 -
Rule Syria 1991 only - Apr 1 0:00 1:00 S
Rule Syria 1991 1992 - Oct 1 0:00 0 -
Rule Syria 1992 only - Apr 8 0:00 1:00 S
Rule Syria 1993 only - Mar 26 0:00 1:00 S
Rule Syria 1993 only - Sep 25 0:00 0 -
# IATA SSIM (1998-02) says 1998-04-02;
# (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02,
# 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31;
# ignore all these claims and go with Shanks.
Rule Syria 1994 1996 - Apr 1 0:00 1:00 S
Rule Syria 1994 max - Oct 1 0:00 0 -
Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S
Rule Syria 1999 max - Apr 1 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq
2:00 Syria EE%sT
# Tajikistan
# From Shanks.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
5:00 - DUST 1930 Jun 21 # Dushanbe Time
6:00 RussiaAsia DUS%sT 1991 Mar 31 2:00s
5:00 1:00 DUSST 1991 Sep 9 2:00s
5:00 - TJT # Tajikistan Time
# Thailand
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Bangkok 6:42:04 - LMT 1880
6:42:04 - BMT 1920 Apr # Bangkok Mean Time
7:00 - ICT
# Turkmenistan
# From Shanks.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
4:00 - ASHT 1930 Jun 21 # Ashkhabad Time
5:00 RussiaAsia ASH%sT 1991 Mar 31 2:00
4:00 RussiaAsia ASH%sT 1991 Oct 27 # independence
4:00 RussiaAsia TM%sT 1992 Jan 19 2:00
5:00 - TMT
# United Arab Emirates
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dubai 3:41:12 - LMT 1920
4:00 - GST
# Uzbekistan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Samarkand 4:27:12 - LMT 1924 May 2
4:00 - SAMT 1930 Jun 21 # Samarkand Time
5:00 - SAMT 1981 Apr 1
5:00 1:00 SAMST 1981 Oct 1
6:00 RussiaAsia TAS%sT 1991 Mar 31 2:00 # Tashkent Time
5:00 RussiaAsia TAS%sT 1991 Sep 1 # independence
5:00 RussiaAsia UZ%sT 1992
5:00 RussiaAsia UZ%sT 1993
5:00 - UZT
Zone Asia/Tashkent 4:37:12 - LMT 1924 May 2
5:00 - TAST 1930 Jun 21 # Tashkent Time
6:00 RussiaAsia TAS%sT 1991 Mar 31 2:00s
5:00 RussiaAsia TAS%sT 1991 Sep 1 # independence
5:00 RussiaAsia UZ%sT 1992
5:00 RussiaAsia UZ%sT 1993
5:00 - UZT
# Vietnam
# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
# Saigon's official name is Thanh-Pho Ho Chi Minh, but it's too long.
# We'll stick with the traditional name for now.
# From Shanks:
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Saigon 7:06:40 - LMT 1906 Jun 9
7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
7:00 - ICT 1912 May
8:00 - ICT 1931 May
7:00 - ICT
# Yemen
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Aden 3:00:48 - LMT 1950
3:00 - AST
src/timezone/data/australasia 0 → 100644
View file @ 6a2b75c2
# @(#)australasia 7.69
# This file also includes Pacific islands.
# Notes are at the end of this file
###############################################################################
# Australia
# Please see the notes below for the controversy about "EST" versus "AEST" etc.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Aus 1917 only - Jan 1 0:01 1:00 -
Rule Aus 1917 only - Mar 25 2:00 0 -
Rule Aus 1942 only - Jan 1 2:00 1:00 -
Rule Aus 1942 only - Mar 29 2:00 0 -
Rule Aus 1942 only - Sep 27 2:00 1:00 -
Rule Aus 1943 1944 - Mar lastSun 2:00 0 -
Rule Aus 1943 only - Oct 3 2:00 1:00 -
# Go with Whitman and the Australian National Standards Commission, which
# says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that
# 1944/1945 was just like 1943/1944.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Northern Territory
Zone Australia/Darwin 8:43:20 - LMT 1895 Feb
9:00 - CST 1899 May
9:30 Aus CST
# Western Australia
Zone Australia/Perth 7:43:24 - LMT 1895 Dec
8:00 Aus WST 1943 Jul
8:00 - WST 1974 Oct lastSun 2:00s
8:00 1:00 WST 1975 Mar Sun>=1 2:00s
8:00 - WST 1983 Oct lastSun 2:00s
8:00 1:00 WST 1984 Mar Sun>=1 2:00s
8:00 - WST 1991 Nov 17 2:00s
8:00 1:00 WST 1992 Mar Sun>=1 2:00s
8:00 - WST
# Queensland
#
# From Alex Livingston <alex@agsm.unsw.edu.au> (1996-11-01):
# I have heard or read more than once that some resort islands off the coast
# of Queensland chose to keep observing daylight-saving time even after
# Queensland ceased to.
#
# From Paul Eggert (1996-11-22):
# IATA SSIM (1993-02/1994-09) say that the Holiday Islands (Hayman, Lindeman,
# Hamilton) observed DST for two years after the rest of Queensland stopped.
# Hamilton is the largest, but there is also a Hamilton in Victoria,
# so use Lindeman.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule AQ 1971 only - Oct lastSun 2:00s 1:00 -
Rule AQ 1972 only - Feb lastSun 2:00s 0 -
Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 -
Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 -
Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 -
Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 -
Zone Australia/Brisbane 10:12:08 - LMT 1895
10:00 Aus EST 1971
10:00 AQ EST
Zone Australia/Lindeman 9:55:56 - LMT 1895
10:00 Aus EST 1971
10:00 AQ EST 1992 Jul
10:00 Holiday EST
# South Australia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 -
Rule AS 1986 only - Oct 19 2:00s 1:00 -
Rule AS 1987 max - Oct lastSun 2:00s 1:00 -
Rule AS 1972 only - Feb 27 2:00s 0 -
Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 -
Rule AS 1986 1989 - Mar Sun>=15 2:00s 0 -
Rule AS 1990 only - Mar Sun>=18 2:00s 0 -
Rule AS 1991 only - Mar Sun>=1 2:00s 0 -
Rule AS 1992 only - Mar Sun>=18 2:00s 0 -
Rule AS 1993 only - Mar Sun>=1 2:00s 0 -
Rule AS 1994 only - Mar Sun>=18 2:00s 0 -
Rule AS 1995 max - Mar lastSun 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb
9:00 - CST 1899 May
9:30 Aus CST 1971
9:30 AS CST
# Tasmania
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 -
Rule AT 1968 only - Mar lastSun 2:00s 0 -
Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 -
Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 -
Rule AT 1972 only - Feb lastSun 2:00s 0 -
Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 -
Rule AT 1982 1983 - Mar lastSun 2:00s 0 -
Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 -
Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 -
Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 -
Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 -
Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 -
Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 -
Rule AT 1991 max - Mar lastSun 2:00s 0 -
Rule AT 2000 only - Aug lastSun 2:00s 1:00 -
Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Australia/Hobart 9:49:16 - LMT 1895 Sep
10:00 - EST 1916 Oct 1 2:00
10:00 1:00 EST 1917 Feb
10:00 Aus EST 1967
10:00 AT EST
# Victoria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 -
Rule AV 1972 only - Feb lastSun 2:00s 0 -
Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 -
Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 -
Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 -
Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 -
Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 -
Rule AV 1995 max - Mar lastSun 2:00s 0 -
Rule AV 2000 only - Aug lastSun 2:00s 1:00 -
Rule AV 2001 max - Oct lastSun 2:00s 1:00 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb
10:00 Aus EST 1971
10:00 AV EST
# New South Wales
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 -
Rule AN 1972 only - Feb 27 2:00s 0 -
Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 -
Rule AN 1982 only - Apr Sun>=1 2:00s 0 -
Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 -
Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 -
Rule AN 1986 only - Oct 19 2:00s 1:00 -
Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 -
Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 -
Rule AN 1996 max - Mar lastSun 2:00s 0 -
Rule AN 2000 only - Aug lastSun 2:00s 1:00 -
Rule AN 2001 max - Oct lastSun 2:00s 1:00 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Australia/Sydney 10:04:52 - LMT 1895 Feb
10:00 Aus EST 1971
10:00 AN EST
Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb
10:00 - EST 1896 Aug 23
9:00 - CST 1899 May
9:30 Aus CST 1971
9:30 AN CST 2000
9:30 AS CST
# Lord Howe Island
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule LH 1981 1984 - Oct lastSun 2:00 1:00 -
Rule LH 1982 1985 - Mar Sun>=1 2:00 0 -
Rule LH 1985 only - Oct lastSun 2:00 0:30 -
Rule LH 1986 1989 - Mar Sun>=15 2:00 0 -
Rule LH 1986 only - Oct 19 2:00 0:30 -
Rule LH 1987 1999 - Oct lastSun 2:00 0:30 -
Rule LH 1990 1995 - Mar Sun>=1 2:00 0 -
Rule LH 1996 max - Mar lastSun 2:00 0 -
Rule LH 2000 only - Aug lastSun 2:00 0:30 -
Rule LH 2001 max - Oct lastSun 2:00 0:30 -
Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb
10:00 - EST 1981 Mar
10:30 LH LHST
# Australian miscellany
#
# Ashmore Is, Cartier
# no indigenous inhabitants; only seasonal caretakers
# like Australia/Perth, says Turner
#
# Coral Sea Is
# no indigenous inhabitants; only meteorologists
# no information
#
# Macquarie
# permanent occupation (scientific station) since 1948;
# sealing and penguin oil station operated 1888/1917
# like Australia/Hobart, says Turner
# Christmas
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Christmas 7:02:52 - LMT 1895 Feb
7:00 - CXT # Christmas Island Time
# Cook Is
# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cook 1978 only - Nov 12 0:00 0:30 HS
Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 -
Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
-10:30 - CKT 1978 Nov 12 # Cook Is Time
-10:00 Cook CK%sT
# Cocos
# From USNO (1989):
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Cocos 6:30 - CCT # Cocos Islands Time
# Fiji
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S
Rule Fiji 1999 2000 - Feb lastSun 3:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Fiji 11:53:40 - LMT 1915 Oct 26 # Suva
12:00 Fiji FJ%sT # Fiji Time
# French Polynesia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
-9:00 - GAMT # Gambier Time
Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
-9:30 - MART # Marquesas Time
Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
-10:00 - TAHT # Tahiti Time
# Clipperton (near North America) is administered from French Polynesia;
# it is uninhabited.
# Guam
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
9:39:00 - LMT 1901 # Agana
10:00 - GST 2000 Dec 23 # Guam
10:00 - ChST # Chamorro Standard Time
# Kiribati
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
12:00 - GILT # Gilbert Is Time
Zone Pacific/Enderbury -11:24:20 - LMT 1901
-12:00 - PHOT 1979 Oct # Phoenix Is Time
-11:00 - PHOT 1995
13:00 - PHOT
Zone Pacific/Kiritimati -10:29:20 - LMT 1901
-10:40 - LINT 1979 Oct # Line Is Time
-10:00 - LINT 1995
14:00 - LINT
# N Mariana Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31
9:43:00 - LMT 1901
9:00 - MPT 1969 Oct # N Mariana Is Time
10:00 - MPT 2000 Dec 23
10:00 - ChST # Chamorro Standard Time
# Marshall Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Majuro 11:24:48 - LMT 1901
11:00 - MHT 1969 Oct # Marshall Islands Time
12:00 - MHT
Zone Pacific/Kwajalein 11:09:20 - LMT 1901
11:00 - MHT 1969 Oct
-12:00 - KWAT 1993 Aug 20 # Kwajalein Time
12:00 - MHT
# Micronesia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Yap 9:12:32 - LMT 1901 # Colonia
9:00 - YAPT 1969 Oct # Yap Time
10:00 - YAPT
Zone Pacific/Truk 10:07:08 - LMT 1901
10:00 - TRUT # Truk Time
Zone Pacific/Ponape 10:32:52 - LMT 1901 # Kolonia
11:00 - PONT # Ponape Time
Zone Pacific/Kosrae 10:51:56 - LMT 1901
11:00 - KOST 1969 Oct # Kosrae Time
12:00 - KOST 1999
11:00 - KOST
# Nauru
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
11:30 - NRT 1942 Mar 15 # Nauru Time
9:00 - JST 1944 Aug 15
11:30 - NRT 1979 May
12:00 - NRT
# New Caledonia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 S
Rule NC 1978 1979 - Feb 27 0:00 0 -
Rule NC 1996 only - Dec 1 2:00s 1:00 S
# Shanks says the following was at 2:00; go with IATA.
Rule NC 1997 only - Mar 2 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13
11:00 NC NC%sT
###############################################################################
# New Zealand
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NZ 1927 only - Nov 6 2:00 1:00 S
Rule NZ 1928 only - Mar 4 2:00 0 M
Rule NZ 1928 1933 - Oct Sun>=8 2:00 0:30 S
Rule NZ 1929 1933 - Mar Sun>=15 2:00 0 M
Rule NZ 1934 1940 - Apr lastSun 2:00 0 M
Rule NZ 1934 1940 - Sep lastSun 2:00 0:30 S
Rule NZ 1946 only - Jan 1 0:00 0 S
# Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no
# convenient notation for this so we must duplicate the Rule lines.
Rule NZ 1974 only - Nov Sun>=1 2:00s 1:00 D
Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 D
Rule NZ 1975 only - Feb lastSun 2:00s 0 S
Rule Chatham 1975 only - Feb lastSun 2:45s 0 S
Rule NZ 1975 1988 - Oct lastSun 2:00s 1:00 D
Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 D
Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S
Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S
Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D
Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D
Rule NZ 1990 max - Oct Sun>=1 2:00s 1:00 D
Rule Chatham 1990 max - Oct Sun>=1 2:45s 1:00 D
Rule NZ 1990 max - Mar Sun>=15 2:00s 0 S
Rule Chatham 1990 max - Mar Sun>=15 2:45s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
11:30 NZ NZ%sT 1946 Jan 1
12:00 NZ NZ%sT
Zone Pacific/Chatham 12:13:48 - LMT 1957 Jan 1
12:45 Chatham CHA%sT
# Auckland Is
# uninhabited; Maori and Moriori, colonial settlers, pastoralists, sealers,
# and scientific personnel have wintered
# Campbell I
# minor whaling stations operated 1909/1914
# scientific station operated 1941/1995;
# previously whalers, sealers, pastoralists, and scientific personnel wintered
# was probably like Pacific/Auckland
###############################################################################
# Niue
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi
-11:20 - NUT 1951 # Niue Time
-11:30 - NUT 1978 Oct 1
-11:00 - NUT
# Norfolk
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
11:12 - NMT 1951 # Norfolk Mean Time
11:30 - NFT # Norfolk Time
# Palau (Belau)
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
9:00 - PWT # Palau Time
# Papua New Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
9:48:32 - PMMT 1895 # Port Moresby Mean Time
10:00 - PGT # Papua New Guinea Time
# Pitcairn
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
-8:30 - PNT 1998 Apr 27 00:00
-8:00 - PST # Pitcairn Standard Time
# American Samoa
Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
-11:22:48 - LMT 1911
-11:30 - SAMT 1950 # Samoa Time
-11:00 - NST 1967 Apr # N=Nome
-11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
# W Samoa
Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
-11:26:56 - LMT 1911
-11:30 - SAMT 1950 # Samoa Time
-11:00 - WST # W Samoa Time
# Solomon Is
# excludes Bougainville, for which see Papua New Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
11:00 - SBT # Solomon Is Time
# Tokelau Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Fakaofo -11:24:56 - LMT 1901
-10:00 - TKT # Tokelau Time
# Tonga
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Tonga 1999 only - Oct 7 2:00s 1:00 S
Rule Tonga 2000 only - Mar 19 2:00s 0 -
Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S
Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Tongatapu 12:19:20 - LMT 1901
12:20 - TOT 1941 # Tonga Time
13:00 - TOT 1999
13:00 Tonga TO%sT
# Tuvalu
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Funafuti 11:56:52 - LMT 1901
12:00 - TVT # Tuvalu Time
# US minor outlying islands
# Howland, Baker
# uninhabited since World War II
# no information; was probably like Pacific/Pago_Pago
# Jarvis
# uninhabited since 1958
# no information; was probably like Pacific/Kiritimati
# Johnston
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Johnston -10:00 - HST
# Kingman
# uninhabited
# Midway
Zone Pacific/Midway -11:49:28 - LMT 1901
-11:00 - NST 1956 Jun 3
-11:00 1:00 NDT 1956 Sep 2
-11:00 - NST 1967 Apr # N=Nome
-11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
# Palmyra
# uninhabited since World War II; was probably like Pacific/Kiritimati
# Wake
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Wake 11:06:28 - LMT 1901
12:00 - WAKT # Wake Time
# Vanuatu
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Vanuatu 1983 only - Sep 25 0:00 1:00 S
Rule Vanuatu 1984 1991 - Mar Sun>=23 0:00 0 -
Rule Vanuatu 1984 only - Oct 23 0:00 1:00 S
Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 S
Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
11:00 Vanuatu VU%sT # Vanuatu Time
# Wallis and Futuna
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Wallis 12:15:20 - LMT 1901
12:00 - WFT # Wallis & Futuna Time
###############################################################################
# NOTES
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@elsie.nci.nih.gov for general use in the future).
# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
#
# Except where otherwise noted, Shanks is the source for entries through 1990,
# and IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
# I found in the UCLA library.
#
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
# I invented the abbreviations marked `*' in the following table;
# the rest are from earlier versions of this file, or from other sources.
# Corrections are welcome!
# std dst
# LMT Local Mean Time
# 8:00 WST WST Western Australia
# 9:00 JST Japan
# 9:30 CST CST Central Australia
# 10:00 EST EST Eastern Australia
# 10:00 ChST Chamorro
# 10:30 LHST LHST Lord Howe*
# 11:30 NZMT NZST New Zealand through 1945
# 12:00 NZST NZDT New Zealand 1946-present
# 12:45 CHAST CHADT Chatham*
# -11:00 SST Samoa
# -10:00 HST Hawaii
# - 8:00 PST Pitcairn*
#
# See the `northamerica' file for Hawaii.
# See the `southamerica' file for Easter I and the Galapagos Is.
###############################################################################
# Australia
# <a href="http://www.dstc.qut.edu.au/DST/marg/daylight.html">
# Australia's Daylight Saving Times
# </a>, by Margaret Turner, summarizes daylight saving issues in Australia.
# From John Mackin (1991-03-06):
# We in Australia have _never_ referred to DST as `daylight' time.
# It is called `summer' time. Now by a happy coincidence, `summer'
# and `standard' happen to start with the same letter; hence, the
# abbreviation does _not_ change...
# The legislation does not actually define abbreviations, at least
# in this State, but the abbreviation is just commonly taken to be the
# initials of the phrase, and the legislation here uniformly uses
# the phrase `summer time' and does not use the phrase `daylight
# time'.
# Announcers on the Commonwealth radio network, the ABC (for Australian
# Broadcasting Commission), use the phrases `Eastern Standard Time'
# or `Eastern Summer Time'. (Note, though, that as I say in the
# current australasia file, there is really no such thing.) Announcers
# on its overseas service, Radio Australia, use the same phrases
# prefixed by the word `Australian' when referring to local times;
# time announcements on that service, naturally enough, are made in UTC.
# From Arthur David Olson (1992-03-08):
# Given the above, what's chosen for year-round use is:
# CST for any place operating at a GMTOFF of 9:30
# WST for any place operating at a GMTOFF of 8:00
# EST for any place operating at a GMTOFF of 10:00
# From Paul Eggert (2001-04-05), summarizing a long discussion about "EST"
# versus "AEST" etc.:
#
# I see the following points of dispute:
#
# * How important are unique time zone abbreviations?
#
# Here I tend to agree with the point (most recently made by Chris
# Newman) that unique abbreviations should not be essential for proper
# operation of software. We have other instances of ambiguity
# (e.g. "IST" denoting both "Israel Standard Time" and "Indian
# Standard Time"), and they are not likely to go away any time soon.
# In the old days, some software mistakenly relied on unique
# abbreviations, but this is becoming less true with time, and I don't
# think it's that important to cater to such software these days.
#
# On the other hand, there is another motivation for unambiguous
# abbreviations: it cuts down on human confusion. This is
# particularly true for Australia, where "EST" can mean one thing for
# time T and a different thing for time T plus 1 second.
#
# * Does the relevant legislation indicate which abbreviations should be used?
#
# Here I tend to think that things are a mess, just as they are in
# many other countries. We Americans are currently disagreeing about
# which abbreviation to use for the newly legislated Chamorro Standard
# Time, for example.
#
# Personally, I would prefer to use common practice; I would like to
# refer to legislation only for examples of common practice, or as a
# tiebreaker.
#
# * Do Australians more often use "Eastern Daylight Time" or "Eastern
# Summer Time"? Do they typically prefix the time zone names with
# the word "Australian"?
#
# My own impression is that both "Daylight Time" and "Summer Time" are
# common and are widely understood, but that "Summer Time" is more
# popular; and that the leading "A" is also common but is omitted more
# often than not. I just used AltaVista advanced search and got the
# following count of page hits:
#
# 1,103 "Eastern Summer Time" AND domain:au
# 971 "Australian Eastern Summer Time" AND domain:au
# 613 "Eastern Daylight Time" AND domain:au
# 127 "Australian Eastern Daylight Time" AND domain:au
#
# Here "Summer" seems quite a bit more popular than "Daylight",
# particularly when we know the time zone is Australian and not US,
# say. The "Australian" prefix seems to be popular for Eastern Summer
# Time, but unpopular for Eastern Daylight Time.
#
# For abbreviations, tools like AltaVista are less useful because of
# ambiguity. Many hits are not really time zones, unfortunately, and
# many hits denote US time zones and not Australian ones. But here
# are the hit counts anyway:
#
# 161,304 "EST" and domain:au
# 25,156 "EDT" and domain:au
# 18,263 "AEST" and domain:au
# 10,416 "AEDT" and domain:au
#
# 14,538 "CST" and domain:au
# 5,728 "CDT" and domain:au
# 176 "ACST" and domain:au
# 29 "ACDT" and domain:au
#
# 7,539 "WST" and domain:au
# 68 "AWST" and domain:au
#
# This data suggest that Australians tend to omit the "A" prefix in
# practice. The situation for "ST" versus "DT" is less clear, given
# the ambiguities involved.
#
# * How do Australians feel about the abbreviations in the tz database?
#
# If you just count Australians on this list, I count 2 in favor and 3
# against. One of the "against" votes (David Keegel) counseled delay,
# saying that both AEST/AEDT and EST/EST are widely used and
# understood in Australia.
# From Paul Eggert (1995-12-19):
# Shanks reports 2:00 for all autumn changes in Australia and New Zealand.
# Mark Prior <mrp@itd.adelaide.edu.au> writes that his newspaper
# reports that NSW's fall 1995 change will occur at 2:00,
# but Robert Elz says it's been 3:00 in Victoria since 1970
# and perhaps the newspaper's `2:00' is referring to standard time.
# For now we'll continue to assume 2:00s for changes since 1960.
# From Eric Ulevik <eau@zip.com.au> (1998-01-05):
#
# Here are some URLs to Australian time legislation. These URLs are stable,
# and should probably be included in the data file. There are probably more
# relevant entries in this database.
#
# NSW (including LHI and Broken Hill):
# <a href="http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html">
# Standard Time Act 1987 (updated 1995-04-04)
# </a>
# ACT
# <a href="http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html">
# Standard Time and Summer Time Act 1972
# </a>
# SA
# <a href="http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html">
# Standard Time Act, 1898
# </a>
# Northern Territory
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # The NORTHERN TERRITORY.. [ Courtesy N.T. Dept of the Chief Minister ]
# # [ Nov 1990 ]
# # N.T. have never utilised any DST due to sub-tropical/tropical location.
# ...
# Zone Australia/North 9:30 - CST
# From Bradley White (1991-03-04):
# A recent excerpt from an Australian newspaper...
# the Northern Territory do[es] not have daylight saving.
# Western Australia
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # The state of WESTERN AUSTRALIA.. [ Courtesy W.A. dept Premier+Cabinet ]
# # [ Nov 1990 ]
# # W.A. suffers from a great deal of public and political opposition to
# # DST in principle. A bill is brought before parliament in most years, but
# # usually defeated either in the upper house, or in party caucus
# # before reaching parliament.
# ...
# Zone Australia/West 8:00 AW %sST
# ...
# Rule AW 1974 only - Oct lastSun 2:00 1:00 D
# Rule AW 1975 only - Mar Sun>=1 3:00 0 W
# Rule AW 1983 only - Oct lastSun 2:00 1:00 D
# Rule AW 1984 only - Mar Sun>=1 3:00 0 W
# From Bradley White (1991-03-04):
# A recent excerpt from an Australian newspaper...
# Western Australia...do[es] not have daylight saving.
# From John D. Newman via Bradley White (1991-11-02):
# Western Australia is still on "winter time". Some DH in Sydney
# rang me at home a few days ago at 6.00am. (He had just arrived at
# work at 9.00am.)
# W.A. is switching to Summer Time on Nov 17th just to confuse
# everybody again.
# From Arthur David Olson (1992-03-08):
# The 1992 ending date used in the rules is a best guess;
# it matches what was used in the past.
# <a href="http://www.bom.gov.au/faq/faqgen.htm">
# The Australian Bureau of Meteorology FAQ
# </a> (1999-09-27) writes that Giles Meteorological Station uses
# South Australian time even though it's located in Western Australia.
# Queensland
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # The state of QUEENSLAND.. [ Courtesy Qld. Dept Premier Econ&Trade Devel ]
# # [ Dec 1990 ]
# ...
# Zone Australia/Queensland 10:00 AQ %sST
# ...
# Rule AQ 1971 only - Oct lastSun 2:00 1:00 D
# Rule AQ 1972 only - Feb lastSun 3:00 0 E
# Rule AQ 1989 max - Oct lastSun 2:00 1:00 D
# Rule AQ 1990 max - Mar Sun>=1 3:00 0 E
# From Bradley White (1989-12-24):
# "Australia/Queensland" now observes daylight time (i.e. from
# October 1989).
# From Bradley White (1991-03-04):
# A recent excerpt from an Australian newspaper...
# ...Queensland...[has] agreed to end daylight saving
# at 3am tomorrow (March 3)...
# From John Mackin (1991-03-06):
# I can certainly confirm for my part that Daylight Saving in NSW did in fact
# end on Sunday, 3 March. I don't know at what hour, though. (It surprised
# me.)
# From Bradley White (1992-03-08):
# ...there was recently a referendum in Queensland which resulted
# in the experimental daylight saving system being abandoned. So, ...
# ...
# Rule QLD 1989 1991 - Oct lastSun 2:00 1:00 D
# Rule QLD 1990 1992 - Mar Sun>=1 3:00 0 S
# ...
# From Arthur David Olson (1992-03-08):
# The chosen rules the union of the 1971/1972 change and the 1989-1992 changes.
# From Rives McDow (2002-04-09):
# The most interesting region I have found consists of three towns on the
# southern coast of Australia, population 10 at last report, along with
# 50,000 sheep, about 100 kilometers long and 40 kilometers into the
# continent. The primary town is Madura, with the other towns being
# Mundrabilla and Eucla. According to the sheriff of Madura, the
# residents got tired of having to change the time so often, as they are
# located in a strip overlapping the border of South Australia and Western
# Australia. South Australia observes daylight saving time; Western
# Australia does not. The two states are one and a half hours apart. The
# residents decided to forget about this nonsense of changing the clock so
# much and set the local time 20 hours and 45 minutes from the
# international date line, or right in the middle of the time of South
# Australia and Western Australia. As it only affects about 10 people and
# tourists staying at the Madura Motel, it has never really made as big an
# impact as Broken Hill. However, as tourist visiting there or anyone
# calling the local sheriff will attest, they do keep time in this way.
#
# From Paul Eggert (2002-04-09):
# This is confirmed by the section entitled
# "What's the deal with time zones???" in
# <http://www.earthsci.unimelb.edu.au/~awatkins/null.html>,
# which says a few other things:
#
# * Border Village, SA also is 45 minutes ahead of Perth.
# * The locals call this time zone "central W.A. Time" (presumably "CWAT").
# * The locals also call Western Australia time "Perth time".
#
# It's not clear from context whether everyone in Western Australia
# knows of this naming convention, or whether it's just the people in
# this subregion.
# South Australia, Tasmania, Victoria
# From Arthur David Olson (1992-03-08):
# The rules from version 7.1 follow.
# There are lots of differences between these rules and
# the Shepherd et al. rules. Since the Shepherd et al. rules
# and Bradley White's newspaper article are in agreement on
# current DST ending dates, no worries.
#
# Rule Oz 1971 1985 - Oct lastSun 2:00 1:00 -
# Rule Oz 1986 max - Oct Sun<=24 2:00 1:00 -
# Rule Oz 1972 only - Feb 27 3:00 0 -
# Rule Oz 1973 1986 - Mar Sun>=1 3:00 0 -
# Rule Oz 1987 max - Mar Sun<=21 3:00 0 -
# Zone Australia/Tasmania 10:00 Oz EST
# Zone Australia/South 9:30 Oz CST
# Zone Australia/Victoria 10:00 Oz EST 1985 Oct lastSun 2:00
# 10:00 1:00 EST 1986 Mar Sun<=21 3:00
# 10:00 Oz EST
# From Robert Elz (1991-03-06):
# I believe that the current start date for DST is "lastSun" in Oct...
# that changed Oct 89. That is, we're back to the
# original rule, and that rule currently applies in all the states
# that have dst, incl Qld. (Certainly it was true in Vic).
# The file I'm including says that happened in 1988, I think
# that's incorrect, but I'm not 100% certain.
# South Australia
# From Bradley White (1991-03-04):
# A recent excerpt from an Australian newspaper...
# ...South Australia...[has] agreed to end daylight saving
# at 3am tomorrow (March 3)...
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # The state of SOUTH AUSTRALIA....[ Courtesy of S.A. Dept of Labour ]
# # [ Nov 1990 ]
# ...
# Zone Australia/South 9:30 AS %sST
# ...
# Rule AS 1971 max - Oct lastSun 2:00 1:00 D
# Rule AS 1972 1985 - Mar Sun>=1 3:00 0 C
# Rule AS 1986 1990 - Mar Sun<=21 3:00 0 C
# Rule AS 1991 max - Mar Sun>=1 3:00 0 C
# From Bradley White (1992-03-11):
# Recent correspondence with a friend in Adelaide
# contained the following exchange: "Due to the Adelaide Festival,
# South Australia delays setting back our clocks for a few weeks."
# From Robert Elz (1992-03-13):
# I heard that apparently (or at least, it appears that)
# South Aus will have an extra 3 weeks daylight saving every even
# numbered year (from 1990). That's when the Adelaide Festival
# is on...
# From Robert Elz (1992-03-16, 00:57:07 +1000):
# DST didn't end in Adelaide today (yesterday)....
# But whether it's "4th Sunday" or "2nd last Sunday" I have no idea whatever...
# (it's just as likely to be "the Sunday we pick for this year"...).
# From Bradley White (1994-04-11):
# If Sun, 15 March, 1992 was at +1030 as kre asserts, but yet Sun, 20 March,
# 1994 was at +0930 as John Connolly's customer seems to assert, then I can
# only conclude that the actual rule is more complicated....
# From John Warburton <jwarb@SACBH.com.au> (1994-10-07):
# The new Daylight Savings dates for South Australia ...
# was gazetted in the Government Hansard on Sep 26 1994....
# start on last Sunday in October and end in last sunday in March.
# Tasmania
# The rules for 1967 through 1991 were reported by George Shepherd
# via Simon Woodhead via Robert Elz (1991-03-06):
# # The state of TASMANIA.. [Courtesy Tasmanian Dept of Premier + Cabinet ]
# # [ Nov 1990 ]
# From Bill Hart via Guy Harris (1991-10-10):
# Oh yes, the new daylight savings rules are uniquely tasmanian, we have
# 6 weeks a year now when we are out of sync with the rest of Australia
# (but nothing new about that).
# From Alex Livingston (1999-10-04):
# I heard on the ABC (Australian Broadcasting Corporation) radio news on the
# (long) weekend that Tasmania, which usually goes its own way in this regard,
# has decided to join with most of NSW, the ACT, and most of Victoria
# (Australia) and start daylight saving on the last Sunday in August in 2000
# instead of the first Sunday in October.
# Sim Alam (2000-07-03) reported a legal citation for the 2000/2001 rules:
# http://www.thelaw.tas.gov.au/fragview/42++1968+GS3A@EN+2000070300
# Victoria
# The rules for 1971 through 1991 were reported by George Shepherd
# via Simon Woodhead via Robert Elz (1991-03-06):
# # The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ]
# # [ Nov 1990 ]
# From Scott Harrington (2001-08-29):
# On KQED's "City Arts and Lectures" program last night I heard an
# interesting story about daylight savings time. Dr. John Heilbron was
# discussing his book "The Sun in the Church: Cathedrals as Solar
# Observatories"[1], and in particular the Shrine of Remembrance[2] located
# in Melbourne, Australia.
#
# Apparently the shrine's main purpose is a beam of sunlight which
# illuminates a special spot on the floor at the 11th hour of the 11th day
# of the 11th month (Remembrance Day) every year in memory of Australia's
# fallen WWI soldiers. And if you go there on Nov. 11, at 11am local time,
# you will indeed see the sunbeam illuminate the special spot at the
# expected time.
#
# However, that is only because of some special mirror contraption that had
# to be employed, since due to daylight savings time, the true solar time of
# the remembrance moment occurs one hour later (or earlier?). Perhaps
# someone with more information on this jury-rig can tell us more.
#
# [1] http://www.hup.harvard.edu/catalog/HEISUN.html
# [2] http://www.shrine.org.au
# New South Wales
# From Arthur David Olson:
# New South Wales and subjurisdictions have their own ideas of a fun time.
# Based on law library research by John Mackin (john@basser.cs.su.oz),
# who notes:
# In Australia, time is not legislated federally, but rather by the
# individual states. Thus, while such terms as ``Eastern Standard Time''
# [I mean, of course, Australian EST, not any other kind] are in common
# use, _they have NO REAL MEANING_, as they are not defined in the
# legislation. This is very important to understand.
# I have researched New South Wales time only...
# From Paul Eggert (1999-09-27):
# The Information Service of the Australian National Standards Commission
# <a href="http://www.nsc.gov.au/InfoServ/Ileaflet/il27.htm">
# Daylight Saving
# </a> page (1995-04) has an excellent overall history of Australian DST.
# The Community Relations Division of the NSW Attorney General's Department
# publishes a history of daylight saving in NSW. See:
# <a href="http://www.lawlink.nsw.gov.au/crd.nsf/pages/time2">
# Lawlink NSW: Daylight Saving in New South Wales
# </a>
# From Eric Ulevik <eau@ozemail.com.au> (1999-05-26):
# DST will start in NSW on the last Sunday of August, rather than the usual
# October in 2000. [See: Matthew Moore,
# <a href="http://www.smh.com.au/news/9905/26/pageone/pageone4.html">
# Two months more daylight saving
# </a>
# Sydney Morning Herald (1999-05-26).]
# From Paul Eggert (1999-09-27):
# See the following official NSW source:
# <a href="http://dir.gis.nsw.gov.au/cgi-bin/genobject/document/other/daylightsaving/tigGmZ">
# Daylight Saving in New South Wales.
# </a>
#
# Narrabri Shire (NSW) council has announced it will ignore the extension of
# daylight saving next year. See:
# <a href="http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm">
# Narrabri Council to ignore daylight saving
# </a> (1999-07-22). For now, we'll wait to see if this really happens.
#
# Victoria will following NSW. See:
# <a href="http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm">
# Vic to extend daylight saving
# </a> (1999-07-28).
#
# However, South Australia rejected the DST request. See:
# <a href="http://abc.net.au/news/olympics/1999/07/item19990719151754_1.htm">
# South Australia rejects Olympics daylight savings request
# </a> (1999-07-19).
#
# Queensland also will not observe DST for the Olympics. See:
# <a href="http://abc.net.au/news/olympics/1999/06/item19990601114608_1.htm">
# Qld says no to daylight savings for Olympics
# </a> (1999-06-01), which quotes Queensland Premier Peter Beattie as saying
# ``Look you've got to remember in my family when this came up last time
# I voted for it, my wife voted against it and she said to me it's all very
# well for you, you don't have to worry about getting the children out of
# bed, getting them to school, getting them to sleep at night.
# I've been through all this argument domestically...my wife rules.''
#
# Broken Hill will stick with South Australian time in 2000. See:
# <a href="http://abc.net.au/news/regionals/brokenh/monthly/regbrok-21jul1999-6.htm">
# Broken Hill to be behind the times
# </a> (1999-07-21).
# IATA SSIM (1998-09) says that the spring 2000 change for Australian
# Capital Territory, New South Wales except Lord Howe Island and Broken
# Hill, and Victoria will be August 27, presumably due to the Sydney Olympics.
# From Eric Ulevik, referring to Sydney's Sun Herald (2000-08-13), page 29:
# The Queensland Premier Peter Beattie is encouraging northern NSW
# towns to use Queensland time.
# Yancowinna
# From John Mackin (1989-01-04):
# `Broken Hill' means the County of Yancowinna.
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # YANCOWINNA.. [ Confirmation courtesy of Broken Hill Postmaster ]
# # [ Dec 1990 ]
# ...
# # Yancowinna uses Central Standard Time, despite [its] location on the
# # New South Wales side of the S.A. border. Most business and social dealings
# # are with CST zones, therefore CST is legislated by local government
# # although the switch to Summer Time occurs in line with N.S.W. There have
# # been years when this did not apply, but the historical data is not
# # presently available.
# Zone Australia/Yancowinna 9:30 AY %sST
# ...
# Rule AY 1971 1985 - Oct lastSun 2:00 1:00 D
# Rule AY 1972 only - Feb lastSun 3:00 0 C
# [followed by other Rules]
# Lord Howe Island
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# LHI... [ Courtesy of Pauline Van Winsen.. pauline@Aus ]
# [ Dec 1990 ]
# Lord Howe Island is located off the New South Wales coast, and is half an
# hour ahead of NSW time.
# From James Lonergan, Secretary, Lord Howe Island Board (2000-01-27):
# Lord Howe Island summer time in 2000/2001 will commence on the same
# date as the rest of NSW (i.e. 2000-08-27). For your information the
# Lord Howe Island Board (controlling authority for the Island) is
# seeking the community's views on various options for summer time
# arrangements on the Island, e.g. advance clocks by 1 full hour
# instead of only 30 minutes. Dependant on the wishes of residents
# the Board may approach the NSW government to change the existing
# arrangements. The starting date for summer time on the Island will
# however always coincide with the rest of NSW.
# From James Lonergan, Secretary, Lord Howe Island Board (2000-10-25):
# Lord Howe Island advances clocks by 30 minutes during DST in NSW and retards
# clocks by 30 minutes when DST finishes. Since DST was most recently
# introduced in NSW, the "changeover" time on the Island has been 02:00 as
# shown on clocks on LHI. I guess this means that for 30 minutes at the start
# of DST, LHI is actually 1 hour ahead of the rest of NSW.
# From Paul Eggert (2001-02-09):
# For Lord Howe dates we use Shanks through 1989, and Lonergan thereafter.
# For times we use Lonergan.
###############################################################################
# New Zealand
# From Mark Davies (1990-10-03):
# the 1989/90 year was a trial of an extended "daylight saving" period.
# This trial was deemed successful and the extended period adopted for
# subsequent years (with the addition of a further week at the start).
# source -- phone call to Ministry of Internal Affairs Head Office.
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # The Country of New Zealand (Australia's east island -) Gee they hate that!
# # or is Australia the west island of N.Z.
# # [ courtesy of Geoff Tribble.. Geofft@Aus.. Auckland N.Z. ]
# # [ Nov 1990 ]
# ...
# Rule NZ 1974 1988 - Oct lastSun 2:00 1:00 D
# Rule NZ 1989 max - Oct Sun>=1 2:00 1:00 D
# Rule NZ 1975 1989 - Mar Sun>=1 3:00 0 S
# Rule NZ 1990 max - Mar lastSun 3:00 0 S
# ...
# Zone NZ 12:00 NZ NZ%sT # New Zealand
# Zone NZ-CHAT 12:45 - NZ-CHAT # Chatham Island
# From Arthur David Olson (1992-03-08):
# The chosen rules use the Davies October 8 values for the start of DST in 1989
# rather than the October 1 value.
# From Paul Eggert (1995-12-19);
# Shanks reports 2:00 for all autumn changes in Australia and New Zealand.
# Robert Uzgalis <buz@cs.aukuni.ac.nz> writes that the New Zealand Daylight
# Savings Time Order in Council dated 1990-06-18 specifies 2:00 standard
# time on both the first Sunday in October and the third Sunday in March.
# As with Australia, we'll assume the tradition is 2:00s, not 2:00.
#
# From Paul Eggert (2003-05-26):
# The Department of Internal Affairs (DIA) maintains a brief history,
# as does Carol Squires; see tz-link.htm for the full references.
# Use these sources in preference to Shanks.
#
# For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with
# transitions at 2:45 local standard time; this confirms that Chatham
# is always exactly 45 minutes ahead of Auckland.
###############################################################################
# Fiji
# Howse writes (p 153) that in 1879 the British governor of Fiji
# enacted an ordinance standardizing the islands on Antipodean Time
# instead of the American system (which was one day behind).
# From Rives McDow (1998-10-08):
# Fiji will introduce DST effective 0200 local time, 1998-11-01
# until 0300 local time 1999-02-28. Each year the DST period will
# be from the first Sunday in November until the last Sunday in February.
# From Paul Eggert (2000-01-08):
# IATA SSIM (1999-09) says DST ends 0100 local time. Go with McDow.
# From the BBC World Service (1998-10-31 11:32 UTC):
# The Fijiian government says the main reasons for the time change is to
# improve productivity and reduce road accidents. But correspondents say it
# also hopes the move will boost Fiji's ability to compete with other pacific
# islands in the effort to attract tourists to witness the dawning of the new
# millenium.
# http://www.fiji.gov.fj/press/2000_09/2000_09_13-05.shtml (2000-09-13)
# reports that Fiji has discontinued DST.
# Johnston
# Johnston data is from usno1995.
# Kiribati
# From Paul Eggert (1996-01-22):
# Today's _Wall Street Journal_ (page 1) reports that Kiribati
# ``declared it the same day throught the country as of Jan. 1, 1995''
# as part of the competition to be first into the 21st century.
# Kwajalein
# In comp.risks 14.87 (26 August 1993), Peter Neumann writes:
# I wonder what happened in Kwajalein, where there was NO Friday,
# 1993-08-20. Thursday night at midnight Kwajalein switched sides with
# respect to the International Date Line, to rejoin its fellow islands,
# going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink.
# N Mariana Is, Guam
# Howse writes (p 153) ``The Spaniards, on the other hand, reached the
# Philippines and the Ladrones from America,'' and implies that the Ladrones
# (now called the Marianas) kept American date for quite some time.
# For now, we assume the Ladrones switched at the same time as the Philippines;
# see Asia/Manila.
# US Public Law 106-564 (2000-12-23) made UTC+10 the official standard time,
# under the name "Chamorro Standard Time". There is no official abbreviation,
# but Congressman Robert A. Underwood, author of the bill that became law,
# wrote in a press release (2000-12-27) that he will seek the use of "ChST".
# Micronesia
# Alan Eugene Davis <adavis@kuentos.guam.net> writes (1996-03-16),
# ``I am certain, having lived there for the past decade, that "Truk"
# (now properly known as Chuuk) ... is in the time zone GMT+10.''
#
# Shanks writes that Truk switched from UTC+10 to UTC+11 on 1978-10-01;
# ignore this for now.
# From Paul Eggert (1999-10-29):
# The Federated States of Micronesia Visitors Board writes in
# <a href="http://www.fsmgov.org/info/clocks.html">
# The Federated States of Micronesia - Visitor Information
# </a> (1999-01-26)
# that Truk and Yap are UTC+10, and Ponape and Kosrae are UTC+11.
# We don't know when Kosrae switched from UTC+12; assume January 1 for now.
# Midway
# From Charles T O'Connor, KMTH DJ (1956),
# quoted in the KTMH section of the Radio Heritage Collection
# <http://radiodx.com/spdxr/KMTH.htm> (2002-12-31):
# For the past two months we've been on what is known as Daylight
# Saving Time. This time has put us on air at 5am in the morning,
# your time down there in New Zealand. Starting September 2, 1956
# we'll again go back to Standard Time. This'll mean that we'll go to
# air at 6am your time.
#
# From Paul Eggert (2003-03-23):
# We don't know the date of that quote, but we'll guess they
# started DST on June 3. Possibly DST was observed other years
# in Midway, but we have no record of it.
# Pitcairn
# From Rives McDow (1999-11-08):
# A Proclamation was signed by the Governor of Pitcairn on the 27th March 1998
# with regard to Pitcairn Standard Time. The Proclamation is as follows.
#
# The local time for general purposes in the Islands shall be
# Co-ordinated Universal time minus 8 hours and shall be known
# as Pitcairn Standard Time.
#
# ... I have also seen Pitcairn listed as UTC minus 9 hours in several
# references, and can only assume that this was an error in interpretation
# somehow in light of this proclamation.
# From Rives McDow (1999-11-09):
# The Proclamation regarding Pitcairn time came into effect on 27 April 1998
# ... at midnight.
# From Howie Phelps (1999-11-10), who talked to a Pitcairner via shortwave:
# Betty Christian told me yesterday that their local time is the same as
# Pacific Standard Time. They used to be 1/2 hour different from us here in
# Sacramento but it was changed a couple of years ago.
# Samoa
# Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald)
# that in 1879 the King of Samoa decided to change
# ``the date in his kingdom from the Antipodean to the American system,
# ordaining -- by a masterpiece of diplomatic flattery -- that
# the Fourth of July should be celebrated twice in that year.''
# Tonga
# From Paul Eggert (1996-01-22):
# Today's _Wall Street Journal_ (p 1) reports that ``Tonga has been plotting
# to sneak ahead of [New Zealanders] by introducing daylight-saving time.''
# Since Kiribati has moved the Date Line it's not clear what Tonga will do.
# Don Mundell writes in the 1997-02-20 Tonga Chronicle
# <a href="http://www.tongatapu.net.to/tonga/homeland/timebegins.htm">
# How Tonga became `The Land where Time Begins'
# </a>:
# Until 1941 Tonga maintained a standard time 50 minutes ahead of NZST
# 12 hours and 20 minutes ahead of GMT. When New Zealand adjusted its
# standard time in 1940s, Tonga had the choice of subtracting from its
# local time to come on the same standard time as New Zealand or of
# advancing its time to maintain the differential of 13 degrees
# (approximately 50 minutes ahead of New Zealand time).
#
# Because His Majesty King Taufa'ahau Tupou IV, then Crown Prince
# Tungi, preferred to ensure Tonga's title as the land where time
# begins, the Legislative Assembly approved the latter change.
#
# But some of the older, more conservative members from the outer
# islands objected. "If at midnight on Dec. 31, we move ahead 40
# minutes, as your Royal Highness wishes, what becomes of the 40
# minutes we have lost?"
#
# The Crown Prince, presented an unanswerable argument: "Remember that
# on the World Day of Prayer, you would be the first people on Earth
# to say your prayers in the morning."
# From Paul Eggert (1999-08-12):
# Shanks says the transition was on 1968-10-01; go with Mundell.
# From Eric Ulevik (1999-05-03):
# Tonga's director of tourism, who is also secretary of the National Millenium
# Committee, has a plan to get Tonga back in front.
# He has proposed a one-off move to tropical daylight saving for Tonga from
# October to March, which has won approval in principle from the Tongan
# Government.
# From Steffen Thorsen [straen@thorsen.priv.no] (1999-09-09):
# * Tonga will introduce DST in November
#
# I was given this link by John Letts <johnletts@earthlink.net>:
# <a hef="http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm">
# http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm
# </a>
#
# I have not been able to find exact dates for the transition in November
# yet. By reading this article it seems like Fiji will be 14 hours ahead
# of UTC as well, but as far as I know Fiji will only be 13 hours ahead
# (12 + 1 hour DST).
# From Arthur David Olson [arthur_david_olson@nih.gov] (1999-09-20):
# According to <a href="http://www.tongaonline.com/news/sept1799.html>
# http://www.tongaonline.com/news/sept1799.html
# </a>:
# "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000
# and annually thereafter from the first Saturday in October through the
# third Saturday of April. Under the system approved by Privy Council on
# Sept. 10, clocks must be turned ahead one hour on the opening day and
# set back an hour on the closing date."
# Alas, no indication of the time of day.
# From Rives McDow (1999-10-06):
# Tonga started its Daylight Saving on Saturday morning October 2nd at 0200am.
# Daylight Saving ends on April 16 at 0300am which is Sunday morning.
# From Steffen Thorsen (2000-10-31):
# Back in March I found a notice on the website http://www.tongaonline.com
# that Tonga changed back to standard time one month early, on March 19
# instead of the original reported date April 16. Unfortunately, the article
# is no longer available on the site, and I did not make a copy of the
# text, and I have forgotten to report it here.
# (Original URL was: http://www.tongaonline.com/news/march162000.htm )
# From Rives McDow (2000-12-01):
# Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27.
# From Sione Moala-Mafi (2001-09-20) via Rives McDow:
# At 2:00am on the first Sunday of November, the standard time in the Kingdom
# shall be moved forward by one hour to 3:00am. At 2:00am on the last Sunday
# of January the standard time in the Kingdom shall be moved backward by one
# hour to 1:00am.
# From Pulu 'Anau (2002-11-05):
# The law was for 3 years, supposedly to get renewed. It wasn't.
# Wake
# From Vernice Anderson, Personal Secretary to Philip Jessup,
# US Ambassador At Large (oral history interview, 1971-02-02):
#
# Saturday, the 14th [of October, 1950] -- ... The time was all the
# more confusing at that point, because we had crossed the
# International Date Line, thus getting two Sundays. Furthermore, we
# discovered that Wake Island had two hours of daylight saving time
# making calculation of time in Washington difficult if not almost
# impossible.
#
# http://www.trumanlibrary.org/wake/meeting.htm
# From Paul Eggert (2003-03-23):
# We have no other report of DST in Wake Island, so omit this info for now.
###############################################################################
# The International Date Line
# From Gwillim Law (2000-01-03):
#
# The International Date Line is not defined by any international standard,
# convention, or treaty. Mapmakers are free to draw it as they please.
# Reputable mapmakers will simply ensure that every point of land appears on
# the correct side of the IDL, according to the date legally observed there.
#
# When Kiribati adopted a uniform date in 1995, thereby moving the Phoenix and
# Line Islands to the west side of the IDL (or, if you prefer, moving the IDL
# to the east side of the Phoenix and Line Islands), I suppose that most
# mapmakers redrew the IDL following the boundary of Kiribati. Even that line
# has a rather arbitrary nature. The straight-line boundaries between Pacific
# island nations that are shown on many maps are based on an international
# convention, but are not legally binding national borders.
#
# An Anglo-French Conference on Time-Keeping at Sea (June, 1917) agreed that
# legal time on the high seas would be zone time, i.e., the standard time at
# the nearest meridian that is a multiple of fifteen degrees. The date is
# governed by the IDL; therefore, even on the high seas, there may be some
# places as late as fourteen hours later than UTC. And, since the IDL is not
# an international standard, there are some places on the high seas where the
# correct date is ambiguous.
src/timezone/data/backward 0 → 100644
View file @ 6a2b75c2
# @(#)backward 7.24
# This file provides links between current names for time zones
# and their old names. Many names changed in late 1993.
Link America/Adak America/Atka
Link America/Tijuana America/Ensenada
Link America/Indianapolis America/Fort_Wayne
Link America/Indiana/Knox America/Knox_IN
Link America/Rio_Branco America/Porto_Acre
Link America/Cordoba America/Rosario
Link America/St_Thomas America/Virgin
Link Asia/Ashgabat Asia/Ashkhabad
Link Asia/Chongqing Asia/Chungking
Link Asia/Dhaka Asia/Dacca
Link Asia/Macau Asia/Macao
Link Asia/Makassar Asia/Ujung_Pandang
Link Asia/Jerusalem Asia/Tel_Aviv
Link Asia/Thimphu Asia/Thimbu
Link Asia/Ulaanbaatar Asia/Ulan_Bator
Link Australia/Sydney Australia/ACT
Link Australia/Sydney Australia/Canberra
Link Australia/Lord_Howe Australia/LHI
Link Australia/Sydney Australia/NSW
Link Australia/Darwin Australia/North
Link Australia/Brisbane Australia/Queensland
Link Australia/Adelaide Australia/South
Link Australia/Hobart Australia/Tasmania
Link Australia/Melbourne Australia/Victoria
Link Australia/Perth Australia/West
Link Australia/Broken_Hill Australia/Yancowinna
Link America/Porto_Acre Brazil/Acre
Link America/Noronha Brazil/DeNoronha
Link America/Sao_Paulo Brazil/East
Link America/Manaus Brazil/West
Link America/Halifax Canada/Atlantic
Link America/Winnipeg Canada/Central
Link America/Regina Canada/East-Saskatchewan
Link America/Toronto Canada/Eastern
Link America/Edmonton Canada/Mountain
Link America/St_Johns Canada/Newfoundland
Link America/Vancouver Canada/Pacific
Link America/Regina Canada/Saskatchewan
Link America/Whitehorse Canada/Yukon
Link America/Santiago Chile/Continental
Link Pacific/Easter Chile/EasterIsland
Link America/Havana Cuba
Link Africa/Cairo Egypt
Link Europe/Dublin Eire
Link Europe/Chisinau Europe/Tiraspol
Link Europe/London GB
Link Europe/London GB-Eire
Link Etc/GMT+0 GMT+0
Link Etc/GMT-0 GMT-0
Link Etc/GMT0 GMT0
Link Etc/Greenwich Greenwich
Link Asia/Hong_Kong Hongkong
Link Atlantic/Reykjavik Iceland
Link Asia/Tehran Iran
Link Asia/Jerusalem Israel
Link America/Jamaica Jamaica
Link Asia/Tokyo Japan
Link Pacific/Kwajalein Kwajalein
Link Africa/Tripoli Libya
Link America/Tijuana Mexico/BajaNorte
Link America/Mazatlan Mexico/BajaSur
Link America/Mexico_City Mexico/General
Link America/Denver Navajo
Link Pacific/Auckland NZ
Link Pacific/Chatham NZ-CHAT
Link Pacific/Pago_Pago Pacific/Samoa
Link Europe/Warsaw Poland
Link Europe/Lisbon Portugal
Link Asia/Shanghai PRC
Link Asia/Taipei ROC
Link Asia/Seoul ROK
Link Asia/Singapore Singapore
Link Europe/Istanbul Turkey
Link Etc/UCT UCT
Link America/Anchorage US/Alaska
Link America/Adak US/Aleutian
Link America/Phoenix US/Arizona
Link America/Chicago US/Central
Link America/Indianapolis US/East-Indiana
Link America/New_York US/Eastern
Link Pacific/Honolulu US/Hawaii
Link America/Indiana/Knox US/Indiana-Starke
Link America/Detroit US/Michigan
Link America/Denver US/Mountain
Link America/Los_Angeles US/Pacific
Link Pacific/Pago_Pago US/Samoa
Link Etc/UTC UTC
Link Etc/Universal Universal
Link Europe/Moscow W-SU
Link Etc/Zulu Zulu
src/timezone/data/etcetera 0 → 100644
View file @ 6a2b75c2
# @(#)etcetera 7.11
# These entries are mostly present for historical reasons, so that
# people in areas not otherwise covered by the tz files could "zic -l"
# to a time zone that was right for their area. These days, the
# tz files cover almost all the inhabited world, so there's little
# need now for the entries that are not on UTC.
Zone Etc/GMT 0 - GMT
Zone Etc/UTC 0 - UTC
Zone Etc/UCT 0 - UCT
# The following link uses older naming conventions,
# but it belongs here, not in the file `backward',
# as functions like gmtime load the "GMT" file to handle leap seconds properly.
# We want this to work even on installations that omit the other older names.
Link Etc/GMT GMT
Link Etc/UTC Etc/Universal
Link Etc/UTC Etc/Zulu
Link Etc/GMT Etc/Greenwich
Link Etc/GMT Etc/GMT-0
Link Etc/GMT Etc/GMT+0
Link Etc/GMT Etc/GMT0
# We use POSIX-style signs in the Zone names and the output abbreviations,
# even though this is the opposite of what many people expect.
# POSIX has positive signs west of Greenwich, but many people expect
# positive signs east of Greenwich. For example, TZ='Etc/GMT+4' uses
# the abbreviation "GMT+4" and corresponds to 4 hours behind UTC
# (i.e. west of Greenwich) even though many people would expect it to
# mean 4 hours ahead of UTC (i.e. east of Greenwich).
#
# In the draft 5 of POSIX 1003.1-200x, the angle bracket notation
# (which is not yet supported by the tz code) allows for
# TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to
# ISO 8601 you can use TZ='<-0400>+4'. Thus the commonly-expected
# offset is kept within the angle bracket (and is used for display)
# while the POSIX sign is kept outside the angle bracket (and is used
# for calculation).
#
# Do not use a TZ setting like TZ='GMT+4', which is four hours behind
# GMT but uses the completely misleading abbreviation "GMT".
# Earlier incarnations of this package were not POSIX-compliant,
# and had lines such as
# Zone GMT-12 -12 - GMT-1200
# We did not want things to change quietly if someone accustomed to the old
# way does a
# zic -l GMT-12
# so we moved the names into the Etc subdirectory.
Zone Etc/GMT-14 14 - GMT-14 # 14 hours ahead of GMT
Zone Etc/GMT-13 13 - GMT-13
Zone Etc/GMT-12 12 - GMT-12
Zone Etc/GMT-11 11 - GMT-11
Zone Etc/GMT-10 10 - GMT-10
Zone Etc/GMT-9 9 - GMT-9
Zone Etc/GMT-8 8 - GMT-8
Zone Etc/GMT-7 7 - GMT-7
Zone Etc/GMT-6 6 - GMT-6
Zone Etc/GMT-5 5 - GMT-5
Zone Etc/GMT-4 4 - GMT-4
Zone Etc/GMT-3 3 - GMT-3
Zone Etc/GMT-2 2 - GMT-2
Zone Etc/GMT-1 1 - GMT-1
Zone Etc/GMT+1 -1 - GMT+1
Zone Etc/GMT+2 -2 - GMT+2
Zone Etc/GMT+3 -3 - GMT+3
Zone Etc/GMT+4 -4 - GMT+4
Zone Etc/GMT+5 -5 - GMT+5
Zone Etc/GMT+6 -6 - GMT+6
Zone Etc/GMT+7 -7 - GMT+7
Zone Etc/GMT+8 -8 - GMT+8
Zone Etc/GMT+9 -9 - GMT+9
Zone Etc/GMT+10 -10 - GMT+10
Zone Etc/GMT+11 -11 - GMT+11
Zone Etc/GMT+12 -12 - GMT+12
src/timezone/data/europe 0 → 100644
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This source diff could not be displayed because it is too large. You can view the blob instead.
src/timezone/data/factory 0 → 100644
View file @ 6a2b75c2
# @(#)factory 7.3
# For companies who don't want to put time zone specification in
# their installation procedures. When users run date, they'll get the message.
# Also useful for the "comp.sources" version.
# Zone NAME GMTOFF RULES FORMAT
Zone Factory 0 - "Local time zone must be set--see zic manual page"
src/timezone/data/iso3166.tab 0 → 100644
View file @ 6a2b75c2
# ISO 3166 alpha-2 country codes
#
# @(#)iso3166.tab 1.14
#
# From Paul Eggert <eggert@twinsun.com> (2003-02-04):
#
# This file contains a table with the following columns:
# 1. ISO 3166-1 alpha-2 country code, current as of
# ISO 3166-1 Newsletter No. V-8 (2003-07-23). See:
# <a href="http://www.iso.org/iso/en/prods-services/iso3166ma/index.html">
# ISO 3166 Maintenance agency (ISO 3166/MA)
# </a>.
# 2. The usual English name for the country,
# chosen so that alphabetic sorting of subsets produces helpful lists.
# This is not the same as the English name in the ISO 3166 tables.
#
# Columns are separated by a single tab.
# The table is sorted by country code.
#
# Lines beginning with `#' are comments.
#
#country-
#code country name
AD Andorra
AE United Arab Emirates
AF Afghanistan
AG Antigua & Barbuda
AI Anguilla
AL Albania
AM Armenia
AN Netherlands Antilles
AO Angola
AQ Antarctica
AR Argentina
AS Samoa (American)
AT Austria
AU Australia
AW Aruba
AZ Azerbaijan
BA Bosnia & Herzegovina
BB Barbados
BD Bangladesh
BE Belgium
BF Burkina Faso
BG Bulgaria
BH Bahrain
BI Burundi
BJ Benin
BM Bermuda
BN Brunei
BO Bolivia
BR Brazil
BS Bahamas
BT Bhutan
BV Bouvet Island
BW Botswana
BY Belarus
BZ Belize
CA Canada
CC Cocos (Keeling) Islands
CD Congo (Dem. Rep.)
CF Central African Rep.
CG Congo (Rep.)
CH Switzerland
CI Cote d'Ivoire
CK Cook Islands
CL Chile
CM Cameroon
CN China
CO Colombia
CR Costa Rica
CS Serbia and Montenegro
CU Cuba
CV Cape Verde
CX Christmas Island
CY Cyprus
CZ Czech Republic
DE Germany
DJ Djibouti
DK Denmark
DM Dominica
DO Dominican Republic
DZ Algeria
EC Ecuador
EE Estonia
EG Egypt
EH Western Sahara
ER Eritrea
ES Spain
ET Ethiopia
FI Finland
FJ Fiji
FK Falkland Islands
FM Micronesia
FO Faeroe Islands
FR France
GA Gabon
GB Britain (UK)
GD Grenada
GE Georgia
GF French Guiana
GH Ghana
GI Gibraltar
GL Greenland
GM Gambia
GN Guinea
GP Guadeloupe
GQ Equatorial Guinea
GR Greece
GS South Georgia & the South Sandwich Islands
GT Guatemala
GU Guam
GW Guinea-Bissau
GY Guyana
HK Hong Kong
HM Heard Island & McDonald Islands
HN Honduras
HR Croatia
HT Haiti
HU Hungary
ID Indonesia
IE Ireland
IL Israel
IN India
IO British Indian Ocean Territory
IQ Iraq
IR Iran
IS Iceland
IT Italy
JM Jamaica
JO Jordan
JP Japan
KE Kenya
KG Kyrgyzstan
KH Cambodia
KI Kiribati
KM Comoros
KN St Kitts & Nevis
KP Korea (North)
KR Korea (South)
KW Kuwait
KY Cayman Islands
KZ Kazakhstan
LA Laos
LB Lebanon
LC St Lucia
LI Liechtenstein
LK Sri Lanka
LR Liberia
LS Lesotho
LT Lithuania
LU Luxembourg
LV Latvia
LY Libya
MA Morocco
MC Monaco
MD Moldova
MG Madagascar
MH Marshall Islands
MK Macedonia
ML Mali
MM Myanmar (Burma)
MN Mongolia
MO Macau
MP Northern Mariana Islands
MQ Martinique
MR Mauritania
MS Montserrat
MT Malta
MU Mauritius
MV Maldives
MW Malawi
MX Mexico
MY Malaysia
MZ Mozambique
NA Namibia
NC New Caledonia
NE Niger
NF Norfolk Island
NG Nigeria
NI Nicaragua
NL Netherlands
NO Norway
NP Nepal
NR Nauru
NU Niue
NZ New Zealand
OM Oman
PA Panama
PE Peru
PF French Polynesia
PG Papua New Guinea
PH Philippines
PK Pakistan
PL Poland
PM St Pierre & Miquelon
PN Pitcairn
PR Puerto Rico
PS Palestine
PT Portugal
PW Palau
PY Paraguay
QA Qatar
RE Reunion
RO Romania
RU Russia
RW Rwanda
SA Saudi Arabia
SB Solomon Islands
SC Seychelles
SD Sudan
SE Sweden
SG Singapore
SH St Helena
SI Slovenia
SJ Svalbard & Jan Mayen
SK Slovakia
SL Sierra Leone
SM San Marino
SN Senegal
SO Somalia
SR Suriname
ST Sao Tome & Principe
SV El Salvador
SY Syria
SZ Swaziland
TC Turks & Caicos Is
TD Chad
TF French Southern & Antarctic Lands
TG Togo
TH Thailand
TJ Tajikistan
TK Tokelau
TL East Timor
TM Turkmenistan
TN Tunisia
TO Tonga
TR Turkey
TT Trinidad & Tobago
TV Tuvalu
TW Taiwan
TZ Tanzania
UA Ukraine
UG Uganda
UM US minor outlying islands
US United States
UY Uruguay
UZ Uzbekistan
VA Vatican City
VC St Vincent
VE Venezuela
VG Virgin Islands (UK)
VI Virgin Islands (US)
VN Vietnam
VU Vanuatu
WF Wallis & Futuna
WS Samoa (Western)
YE Yemen
YT Mayotte
ZA South Africa
ZM Zambia
ZW Zimbabwe
src/timezone/data/leapseconds 0 → 100644
View file @ 6a2b75c2
# @(#)leapseconds 7.16
# Allowance for leapseconds added to each timezone file.
# The International Earth Rotation Service periodically uses leap seconds
# to keep UTC to within 0.9 s of UT1
# (which measures the true angular orientation of the earth in space); see
# Terry J Quinn, The BIPM and the accurate measure of time,
# Proc IEEE 79, 7 (July 1991), 894-905.
# There were no leap seconds before 1972, because the official mechanism
# accounting for the discrepancy between atomic time and the earth's rotation
# did not exist until the early 1970s.
# The correction (+ or -) is made at the given time, so lines
# will typically look like:
# Leap YEAR MON DAY 23:59:60 + R/S
# or
# Leap YEAR MON DAY 23:59:59 - R/S
# If the leapsecond is Rolling (R) the given time is local time
# If the leapsecond is Stationary (S) the given time is UTC
# Leap YEAR MONTH DAY HH:MM:SS CORR R/S
Leap 1972 Jun 30 23:59:60 + S
Leap 1972 Dec 31 23:59:60 + S
Leap 1973 Dec 31 23:59:60 + S
Leap 1974 Dec 31 23:59:60 + S
Leap 1975 Dec 31 23:59:60 + S
Leap 1976 Dec 31 23:59:60 + S
Leap 1977 Dec 31 23:59:60 + S
Leap 1978 Dec 31 23:59:60 + S
Leap 1979 Dec 31 23:59:60 + S
Leap 1981 Jun 30 23:59:60 + S
Leap 1982 Jun 30 23:59:60 + S
Leap 1983 Jun 30 23:59:60 + S
Leap 1985 Jun 30 23:59:60 + S
Leap 1987 Dec 31 23:59:60 + S
Leap 1989 Dec 31 23:59:60 + S
Leap 1990 Dec 31 23:59:60 + S
Leap 1992 Jun 30 23:59:60 + S
Leap 1993 Jun 30 23:59:60 + S
Leap 1994 Jun 30 23:59:60 + S
Leap 1995 Dec 31 23:59:60 + S
Leap 1997 Jun 30 23:59:60 + S
Leap 1998 Dec 31 23:59:60 + S
# INTERNATIONAL EARTH ROTATION SERVICE (IERS)
# SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE
#
# SERVICE DE LA ROTATION TERRESTRE
# OBSERVATOIRE DE PARIS
# 61, Av. de l'Observatoire 75014 PARIS (France)
# Tel. : 33 (0) 1 40 51 22 26
# FAX : 33 (0) 1 40 51 22 91
# Internet : iers@obspm.fr
#
# Paris, 1 July 2003
#
# Bulletin C 26
#
# To authorities responsible
# for the measurement and
# distribution of time
#
# INFORMATION ON UTC - TAI
#
# NO positive leap second will be introduced at the end of December 2003.
# The difference between UTC and the International Atomic Time TAI is:
#
# from 1999 January 1, 0h UTC, until further notice: UTC-TAI = -32 s
#
# Leap seconds can be introduced in UTC at the end of the months of December
# or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
# six months, either to announce a time step in UTC, or to confirm that there
# will be no time step at the next possible date.
#
# Daniel GAMBIS
# Director
# Earth Orientation Center of IERS
src/timezone/data/northamerica 0 → 100644
View file @ 6a2b75c2
# @(#)northamerica 7.67
# also includes Central America and the Caribbean
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@elsie.nci.nih.gov for general use in the future).
# From Paul Eggert <eggert@twinsun.com> (1999-03-22):
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
###############################################################################
# United States
# From Paul Eggert (1999-03-31):
# Howse writes (pp 121-125) that time zones were invented by
# Professor Charles Ferdinand Dowd (1825-1904),
# Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY).
# His pamphlet ``A System of National Time for Railroads'' (1870)
# was the result of his proposals at the Convention of Railroad Trunk Lines
# in New York City (1869-10). His 1870 proposal was based on Washington, DC,
# but in 1872-05 he moved the proposed origin to Greenwich.
# His proposal was adopted by the railroads on 1883-11-18 at 12:00,
# and the most of the country soon followed suit.
# From Paul Eggert <eggert@twinsun.com> (1995-12-19):
# A good source for time zone historical data in the US is
# Thomas G. Shanks, The American Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1991).
# Make sure you have the errata sheet; the book is somewhat useless without it.
# It is the source for the US and Puerto Rico entries below.
# From Paul Eggert (2001-03-06):
# Daylight Saving Time was first suggested as a joke by Benjamin Franklin
# in his whimsical essay ``An Economical Project for Diminishing the Cost
# of Light'' published in the Journal de Paris (1784-04-26).
# Not everyone is happy with the results:
#
# I don't really care how time is reckoned so long as there is some
# agreement about it, but I object to being told that I am saving
# daylight when my reason tells me that I am doing nothing of the kind.
# I even object to the implication that I am wasting something
# valuable if I stay in bed after the sun has risen. As an admirer
# of moonlight I resent the bossy insistence of those who want to
# reduce my time for enjoying it. At the back of the Daylight Saving
# scheme I detect the bony, blue-fingered hand of Puritanism, eager
# to push people into bed earlier, and get them up earlier, to make
# them healthy, wealthy and wise in spite of themselves.
#
# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday
#
# For more about the first ten years of DST in the United States, see
# Robert Garland's <a href="http://www.clpgh.org/exhibit/dst.html">
# Ten years of daylight saving from the Pittsburgh standpoint
# (Carnegie Library of Pittsburgh, 1927)</a>.
#
# Shanks says that DST was called "War Time" in the US in 1918 and 1919.
# However, DST was imposed by the Standard Time Act of 1918, which
# was the first nationwide legal time standard, and apparently
# time was just called "Standard Time" or "Daylight Saving Time".
# From Arthur David Olson:
# US Daylight Saving Time ended on the last Sunday of *October* in 1974.
# See, for example, the front page of the Saturday, 1974-10-26
# and Sunday, 1974-10-27 editions of the Washington Post.
# From Arthur David Olson:
# Before the Uniform Time Act of 1966 took effect in 1967, observance of
# Daylight Saving Time in the US was by local option, except during wartime.
# From Arthur David Olson (2000-09-25):
# Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama.
# In the introduction, Oboler spoke of "Eastern Peace Time."
# An AltaVista search turned up
# <a href="http://rowayton.org/rhs/hstaug45.html">:
# "When the time is announced over the radio now, it is 'Eastern Peace
# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful."
# </a> (August 1945) by way of confirmation.
# From Joseph Gallant <notquite@hotmail.com>, citing
# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987):
# At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set
# to switch to London for Attlee's address, but the American people
# never got to hear his speech live. According to one press account,
# CBS' Bob Trout was first to announce the word of Japan's surrender,
# but a few seconds later, NBC, ABC and Mutual also flashed the word
# of surrender, all of whom interrupting the bells of Big Ben in
# London which were to precede Mr. Attlee's speech.
# From Paul Eggert (2003-02-09): It was Robert St John, not Bob Trout. From
# Myrna Oliver's obituary of St John on page B16 of today's Los Angeles Times:
#
# ... a war-weary U.S. clung to radios, awaiting word of Japan's surrender.
# Any announcement from Asia would reach St. John's New York newsroom on a
# wire service teletype machine, which had prescribed signals for major news.
# Associated Press, for example, would ring five bells before spewing out
# typed copy of an important story, and 10 bells for news "of transcendental
# importance."
#
# On Aug. 14, stalling while talking steadily into the NBC networks' open
# microphone, St. John heard five bells and waited only to hear a sixth bell,
# before announcing confidently: "Ladies and gentlemen, World War II is over.
# The Japanese have agreed to our surrender terms."
#
# He had scored a 20-second scoop on other broadcasters.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
Rule US 1918 1919 - Oct lastSun 2:00 0 S
Rule US 1942 only - Feb 9 2:00 1:00 W # War
Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule US 1945 only - Sep 30 2:00 0 S
Rule US 1967 max - Oct lastSun 2:00 0 S
Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
Rule US 1974 only - Jan 6 2:00 1:00 D
Rule US 1975 only - Feb 23 2:00 1:00 D
Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
Rule US 1987 max - Apr Sun>=1 2:00 1:00 D
# <a href="http://thomas.loc.gov/cgi-bin/bdquery/z?d106:h.r.00177:">
# H.R.177
# </a> (introduced 1999-01-06) would change April to March in the above rule.
# From Bob Devine (1988-01-28):
# ...Alaska (and Hawaii) had the timezone names changed in 1967.
# old new
# Pacific Standard Time(PST) -same-
# Yukon Standard Time(YST) -same-
# Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST)
# Nome Standard Time (NT) Bering Standard Time (BST)
#
# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
# The YST zone now covers nearly all of the state, AHST just part
# of the Aleutian islands. No DST.
# From Paul Eggert (1995-12-19):
# The tables below use `NST', not `NT', for Nome Standard Time.
# I invented `CAWT' for Central Alaska War Time.
# From U. S. Naval Observatory (1989-01-19):
# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
# USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON
# USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30
# USA MOUNTAIN 7 H BEHIND UTC DENVER
# USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30
# USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO
# USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30
# USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST)
# USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT)
# USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W
# USA - " - 9 H BEHIND UTC APR 3 - OCT 30
# USA HAWAII 10 H BEHIND UTC
# USA BERING 11 H BEHIND UTC SAMOA, MIDWAY
# From Arthur David Olson (1989-01-21):
# The above dates are for 1988.
# Note the "AKST" and "AKDT" abbreviations, the claim that there's
# no DST in Samoa, and the claim that there is DST in Alaska and the
# Aleutians.
# From Arthur David Olson (1988-02-13):
# Legal standard time zone names, from United States Code (1982 Edition and
# Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names
# up to 1967-04-01 (when most provisions of the Uniform Time Act of 1966
# took effect), as explained in sections 263 and 261:
# (none)
# United States standard eastern time
# United States standard mountain time
# United States standard central time
# United States standard Pacific time
# (none)
# United States standard Alaska time
# (none)
# Next, names from 1967-04-01 until 1983-11-30 (the date for
# public law 98-181):
# Atlantic standard time
# eastern standard time
# central standard time
# mountain standard time
# Pacific standard time
# Yukon standard time
# Alaska-Hawaii standard time
# Bering standard time
# And after 1983-11-30:
# Atlantic standard time
# eastern standard time
# central standard time
# mountain standard time
# Pacific standard time
# Alaska standard time
# Hawaii-Aleutian standard time
# Samoa standard time
# The law doesn't give abbreviations.
#
# From Paul Eggert (1995-12-19):
# Shanks uses 1983-10-30, not 1983-11-30, for the 1983 transitions.
# Go with Shanks.
#
# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
# Public law 106-564 (2000-12-23) introduced the abbreviation
# "Chamorro Standard Time" for time in Guam and the Northern Marianas.
# See the file "australasia".
# US eastern time, represented by New York
# Connecticut, Delaware, District of Columbia, most of Florida,
# Georgia, southeast Indiana (Clark, Dearborn, Floyd, Harrison, and
# Ohio counties), eastern Kentucky, Maine, Maryland, Massachusetts,
# New Hampshire, New Jersey, New York, North Carolina, Ohio,
# Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
# Vermont, Virginia, West Virginia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
Rule NYC 1920 only - Oct lastSun 2:00 0 S
Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
Rule NYC 1955 1966 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00
-5:00 US E%sT 1920
-5:00 NYC E%sT 1942
-5:00 US E%sT 1946
-5:00 NYC E%sT 1967
-5:00 US E%sT
# US central time, represented by Chicago
# Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia,
# Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
# Washington counties), Illinois, western Indiana
# (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
# Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
# Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
# Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
# western Tennessee, most of Texas, Wisconsin
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Chicago 1920 only - Jun 13 2:00 1:00 D
Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1920
-6:00 Chicago C%sT 1936 Mar 1 2:00
-5:00 - EST 1936 Nov 15 2:00
-6:00 Chicago C%sT 1942
-6:00 US C%sT 1946
-6:00 Chicago C%sT 1967
-6:00 US C%sT
# Oliver County, ND switched from mountain to central time on 1992-10-25.
Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:00
-7:00 US M%sT 1992 Oct 25 02:00
-6:00 US C%sT
# US mountain time, represented by Denver
#
# Colorado, far western Kansas, Montana, western
# Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City),
# New Mexico, southwestern North Dakota, far eastern Oregon,
# western South Dakota, far western Texas (El Paso County, Hudspeth County,
# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
Rule Denver 1920 only - Oct lastSun 2:00 0 S
Rule Denver 1921 only - May 22 2:00 0 S
Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00
-7:00 US M%sT 1920
-7:00 Denver M%sT 1942
-7:00 US M%sT 1946
-7:00 Denver M%sT 1967
-7:00 US M%sT
# US Pacific time, represented by Los Angeles
#
# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
# Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties),
# most of Nevada, most of Oregon, and Washington
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule CA 1948 only - Mar 14 2:00 1:00 D
Rule CA 1949 only - Jan 1 2:00 0 S
Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
Rule CA 1950 1961 - Sep lastSun 2:00 0 S
Rule CA 1962 1966 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00
-8:00 US P%sT 1946
-8:00 CA P%sT 1967
-8:00 US P%sT
# Alaska
# AK%sT is the modern abbreviation for -9:00 per USNO.
#
# From Paul Eggert (2001-05-30):
# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
# also a Friday. Include only the time zone part of this transition,
# ignoring the switch from Julian to Gregorian, since we can't represent
# the Julian calendar.
#
# As far as we know, none of the exact locations mentioned below were
# permanently inhabited in 1867 by anyone using either calendar.
# (Yakutat was colonized by the Russians in 1799, but the settlement
# was destroyed in 1805 by a Yakutat-kon war party.) However, there
# were nearby inhabitants in some cases and for our purposes perhaps
# it's best to simply use the official transition.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
-8:57:41 - LMT 1900 Aug 20 12:00
-8:00 - PST 1942
-8:00 US P%sT 1946
-8:00 - PST 1969
-8:00 US P%sT 1983 Oct 30 2:00
-9:00 US AK%sT
Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
-9:18:55 - LMT 1900 Aug 20 12:00
-9:00 - YST 1942
-9:00 US Y%sT 1946
-9:00 - YST 1969
-9:00 US Y%sT 1983 Oct 30 2:00
-9:00 US AK%sT
Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
-9:59:36 - LMT 1900 Aug 20 12:00
-10:00 - CAT 1942
-10:00 US CAT/CAWT 1946
-10:00 - CAT 1967 Apr
-10:00 - AHST 1969
-10:00 US AH%sT 1983 Oct 30 2:00
-9:00 US AK%sT
Zone America/Nome 12:58:21 - LMT 1867 Oct 18
-11:01:38 - LMT 1900 Aug 20 12:00
-11:00 - NST 1942
-11:00 US N%sT 1946
-11:00 - NST 1967 Apr
-11:00 - BST 1969
-11:00 US B%sT 1983 Oct 30 2:00
-9:00 US AK%sT
Zone America/Adak 12:13:21 - LMT 1867 Oct 18
-11:46:38 - LMT 1900 Aug 20 12:00
-11:00 - NST 1942
-11:00 US N%sT 1946
-11:00 - NST 1967 Apr
-11:00 - BST 1969
-11:00 US B%sT 1983 Oct 30 2:00
-10:00 US HA%sT
# Shanks writes that part of southwest Alaska (e.g. Aniak)
# switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
# and another part (e.g. Akiak) made the same switch five weeks later.
# These switches don't quite make our 1970 cutoff.
# Hawaii
#
# From Arthur David Olson:
# And then there's Hawaii.
# DST was observed for one day in 1933;
# standard time was changed by half an hour in 1947;
# it's always standard as of 1986.
#
# From Paul Eggert:
# Shanks says the 1933 experiment lasted for three weeks. Go with Shanks.
#
Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00
-10:30 - HST 1933 Apr 30 2:00
-10:30 1:00 HDT 1933 May 21 2:00
-10:30 US H%sT 1947 Jun 8 2:00
-10:00 - HST
# Now we turn to US areas that have diverged from the consensus since 1970.
# Arizona mostly uses MST.
# From Paul Eggert (2002-10-20):
#
# The information in the rest of this paragraph is derived from the
# <a href="http://www.dlapr.lib.az.us/links/daylight.htm">
# Daylight Saving Time web page (2002-01-23)</a> maintained by the
# Arizona State Library, Archives and Public Records.
# Between 1944-01-01 and 1944-04-01 the State of Arizona used standard
# time, but by federal law railroads, airlines, bus lines, military
# personnel, and some engaged in interstate commerce continued to
# observe war (i.e., daylight saving) time. The 1944-03-17 Phoenix
# Gazette says that was the date the law changed, and that 04-01 was
# the date the state's clocks would change. In 1945 the State of
# Arizona used standard time all year, again with exceptions only as
# mandated by federal law. Arizona observed DST in 1967, but Arizona
# Laws 1968, ch. 183 (effective 1968-03-21) repealed DST.
#
# Shanks says the 1944 experiment came to an end on 1944-03-17.
# Go with the Arizona State Library instead.
Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00
-7:00 US M%sT 1944 Jan 1 00:01
-7:00 - MST 1944 Apr 1 00:01
-7:00 US M%sT 1944 Oct 1 00:01
-7:00 - MST 1967
-7:00 US M%sT 1968 Mar 21
-7:00 - MST
# From Arthur David Olson (1988-02-13):
# A writer from the Inter Tribal Council of Arizona, Inc.,
# notes in private correspondence dated 1987-12-28 that "Presently, only the
# Navajo Nation participates in the Daylight Saving Time policy, due to its
# large size and location in three states." (The "only" means that other
# tribal nations don't use DST.)
Link America/Denver America/Shiprock
# Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine,
# Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark,
# Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome,
# Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power,
# Teton, Twin Falls, Valley, Washington counties) and eastern Oregon
# switched four weeks late in 1974.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00
-8:00 US P%sT 1923 May 13 2:00
-7:00 US M%sT 1974
-7:00 - MST 1974 Feb 3 2:00
-7:00 US M%sT
# Indiana
#
# For a map of Indiana's time zone regions, see:
# <a href="http://www.mccsc.edu/time.html">
# What time is it in Indiana?
# </a> (1999-04-06)
#
# From Paul Eggert (1995-12-19):
# Indiana generally observes either EST all year, or CST/CDT,
# but areas near Cincinnati and Louisville use those cities' timekeeping
# and in 1969 and 1970 the whole state observed daylight time;
# and there are other exceptions as noted below.
# Shanks partitions Indiana into 345 regions, each with its own time history,
# and writes ``Even newspaper reports present contradictory information.''
# Fortunately, most of the complexity occurred before our cutoff date of 1970.
#
# Since 1970, EST-only Indiana has been like America/Indianapolis,
# with exceptions noted below for Crawford, Starke, and Switzerland counties.
# The parts of Indiana not listed below have been like America/Chicago,
# America/Louisville, or America/New_York.
#
# Other than Indianapolis, the Indiana place names are so nondescript
# that they would be ambiguous if we left them at the `America' level.
# So we reluctantly put them all in a subdirectory `America/Indiana'.
#
# Most of EST-only Indiana last observed DST in 1970.
# From Paul Eggert (2001-03-06), following a tip by Markus Kuhn:
# Pam Belluck reported in the New York Times (2001-01-31) that the
# Indiana Legislature is considering a bill to adopt DST statewide.
# Her article mentioned Vevay, whose post office observes a different
# time zone from Danner's Hardware across the street.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D
Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S
Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1920
-6:00 Indianapolis C%sT 1942
-6:00 US C%sT 1946
-6:00 Indianapolis C%sT 1955 Apr 24 2:00
-5:00 - EST 1957 Sep 29 2:00
-6:00 - CST 1958 Apr 27 2:00
-5:00 - EST 1969
-5:00 US E%sT 1971
-5:00 - EST
Link America/Indianapolis America/Indiana/Indianapolis
#
# Part of Crawford County, Indiana, last observed DST in 1975,
# and left its clocks alone in 1974.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D
Rule Marengo 1951 only - Sep lastSun 2:00 0 S
Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D
Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1951
-6:00 Marengo C%sT 1961 Apr 30 2:00
-5:00 - EST 1969
-5:00 US E%sT 1974 Jan 6 2:00
-6:00 1:00 CDT 1974 Oct 27 2:00
-5:00 US E%sT 1976
-5:00 - EST
#
# Starke County, Indiana
# From Arthur David Olson (1991-10-28):
# An article on page A3 of the Sunday, 1991-10-27 Washington Post
# notes that Starke County switched from Central time to Eastern time as of
# 1991-10-27.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D
Rule Starke 1947 1954 - Sep lastSun 2:00 0 S
Rule Starke 1955 1956 - Oct lastSun 2:00 0 S
Rule Starke 1957 1958 - Sep lastSun 2:00 0 S
Rule Starke 1959 1961 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1947
-6:00 Starke C%sT 1962 Apr 29 2:00
-5:00 - EST 1963 Oct 27 2:00
-6:00 US C%sT 1991 Oct 27 2:00
-5:00 - EST
#
# Switzerland County, Indiana, last observed DST in 1972.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1954 Apr 25 2:00
-5:00 - EST 1969
-5:00 US E%sT 1973
-5:00 - EST
# Part of Kentucky left its clocks alone in 1974.
# This also includes a part of Indiana immediately adjacent to Louisville.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Louisville 1921 only - May 1 2:00 1:00 D
Rule Louisville 1921 only - Sep 1 2:00 0 S
Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D
Rule Louisville 1941 only - Sep lastSun 2:00 0 S
Rule Louisville 1946 only - Jun 2 2:00 0 S
Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S
Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1921
-6:00 Louisville C%sT 1942
-6:00 US C%sT 1946
-6:00 Louisville C%sT 1961 Jul 23 2:00
-5:00 - EST 1968
-5:00 US E%sT 1974 Jan 6 2:00
-6:00 1:00 CDT 1974 Oct 27 2:00
-5:00 US E%sT
Link America/Louisville America/Kentucky/Louisville
#
# Wayne, Clinton, and Russell Counties, Kentucky
#
# From
# <a href="http://www.lake-cumberland.com/life/archive/news990129time.shtml">
# Lake Cumberland LIFE
# </a> (1999-01-29) via WKYM-101.7:
# Clinton County has joined Wayne County in asking the DoT to change from
# the Central to the Eastern time zone.... The Wayne County government made
# the same request in December. And while Russell County officials have not
# taken action, the majority of respondents to a poll conducted there in
# August indicated they would like to change to "fast time" also.
# The three Lake Cumberland counties are the farthest east of any U.S.
# location in the Central time zone.
#
# From Rich Wales (2000-08-29):
# After prolonged debate, and despite continuing deep differences of opinion,
# Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
# (-0500) time. They won't "fall back" this year. See Sara Shipley,
# The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
#
# From Paul Eggert (2001-07-16):
# The final rule was published in the
# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22">
# Federal Register 65, 160 (2000-08-17), page 50154-50158.
# </a>
#
Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00
-6:00 US C%sT 1946
-6:00 - CST 1968
-6:00 US C%sT 2000 Oct 29 2:00
-5:00 US E%sT
# From Rives McDow (2000-08-30):
# Here ... are all the changes in the US since 1985.
# Kearny County, KS (put all of county on central;
# previously split between MST and CST) ... 1990-10
# Starke County, IN (from CST to EST) ... 1991-10
# Oliver County, ND (from MST to CST) ... 1992-10
# West Wendover, NV (from PST TO MST) ... 1999-10
# Wayne County, KY (from CST to EST) ... 2000-10
#
# From Paul Eggert (2001-07-17):
# We don't know where the line used to be within Kearny County, KS,
# so omit that change for now.
# See America/Indiana/Knox for the Starke County, IN change.
# See America/North_Dakota/Center for the Oliver County, ND change.
# West Wendover, NV officially switched from Pacific to mountain time on
# 1999-10-31. See the
# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15">
# Federal Register 64, 203 (1999-10-21), page 56705-56707.
# </a>
# However, the Federal Register says that West Wendover already operated
# on mountain time, and the rule merely made this official;
# hence a separate tz entry is not needed.
# Michigan
#
# From Bob Devine (1988-01-28):
# Michigan didn't observe DST from 1968 to 1973.
#
# From Paul Eggert (1999-03-31):
# Shanks writes that Michigan started using standard time on 1885-09-18,
# but Howse writes (pp 124-125, referring to Popular Astronomy, 1901-01)
# that Detroit kept
#
# local time until 1900 when the City Council decreed that clocks should
# be put back twenty-eight minutes to Central Standard Time. Half the
# city obeyed, half refused. After considerable debate, the decision
# was rescinded and the city reverted to Sun time. A derisive offer to
# erect a sundial in front of the city hall was referred to the
# Committee on Sewers. Then, in 1905, Central time was adopted
# by city vote.
#
# This story is too entertaining to be false, so go with Howse over Shanks.
#
# From Paul Eggert (2001-03-06):
# Garland (1927) writes ``Cleveland and Detroit advanced their clocks
# one hour in 1914.'' This change is not in Shanks. We have no more
# info, so omit this for now.
#
# Most of Michigan observed DST from 1973 on, but was a bit late in 1975.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D
Rule Detroit 1948 only - Sep lastSun 2:00 0 S
Rule Detroit 1967 only - Jun 14 2:00 1:00 D
Rule Detroit 1967 only - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Detroit -5:32:11 - LMT 1905
-6:00 - CST 1915 May 15 2:00
-5:00 - EST 1942
-5:00 US E%sT 1946
-5:00 Detroit E%sT 1973
-5:00 US E%sT 1975
-5:00 - EST 1975 Apr 27 2:00
-5:00 US E%sT
#
# The Michigan border with Wisconsin switched from EST to CST/CDT in 1973.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D
Rule Menominee 1946 only - Sep lastSun 2:00 0 S
Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D
Rule Menominee 1966 only - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
-6:00 US C%sT 1946
-6:00 Menominee C%sT 1969 Apr 27 2:00
-5:00 - EST 1973 Apr 29 2:00
-6:00 US C%sT
# Navassa
# administered by the US Fish and Wildlife Service
# claimed by US under the provisions of the 1856 Guano Islands Act
# also claimed by Haiti
# occupied 1857/1900 by the Navassa Phosphate Co
# US lighthouse 1917/1996-09
# currently uninhabited
# see Mark Fineman, ``An Isle Rich in Guano and Discord'',
# _Los Angeles Times_ (1998-11-10), A1, A10; it cites
# Jimmy Skaggs, _The Great Guano Rush_ (1994).
# Old names, for S5 users
# Link LINK-FROM LINK-TO
Link America/New_York EST5EDT
Link America/Chicago CST6CDT
Link America/Denver MST7MDT
Link America/Los_Angeles PST8PDT
Link America/Indianapolis EST
Link America/Phoenix MST
Link Pacific/Honolulu HST
################################################################################
# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
# A good source for time zone historical data outside the US is
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
#
# Except where otherwise noted, Shanks is the source for entries through 1990,
# and IATA SSIM is the source for entries after 1990.
#
# Other sources occasionally used include:
#
# Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
# which I found in the UCLA library.
#
# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf">
# William Willett, The Waste of Daylight, 19th edition
# </a> (1914-03)
#
# See the `europe' file for Greenland.
# Canada
# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
# I post here the time zone abbreviations standardized in Canada
# for both English and French in the CAN/CSA-Z234.4-89 standard....
#
# UTC Standard time Daylight savings time
# offset French English French English
# -2:30 - - HAT NDT
# -3 - - HAA ADT
# -3:30 HNT NST - -
# -4 HNA AST HAE EDT
# -5 HNE EST HAC CDT
# -6 HNC CST HAR MDT
# -7 HNR MST HAP PDT
# -8 HNP PST HAY YDT
# -9 HNY YST - -
#
# HN: Heure Normale ST: Standard Time
# HA: Heure Avanc<e'>e DT: Daylight saving Time
#
# A: de l'Atlantique Atlantic
# C: du Centre Central
# E: de l'Est Eastern
# M: Mountain
# N: Newfoundland
# P: du Pacifique Pacific
# R: des Rocheuses
# T: de Terre-Neuve
# Y: du Yukon Yukon
#
# From Paul Eggert <eggert@twinsun.com> (1994-11-22):
# Alas, this sort of thing must be handled by localization software.
# Unless otherwise specified, the data for Canada are all from Shanks.
# From Paul Eggert (2000-10-02):
# H. David Matthews and Mary Vincent's map
# <a href="http://www.canadiangeographic.ca/SO98/geomap.htm">
# "It's about TIME", _Canadian Geographic_ (September-October 1998)
# </a> contains detailed boundaries for regions observing nonstandard
# time and daylight saving time arrangements in Canada circa 1998.
#
# INMS, the Institute for National Measurement Standards in Ottawa, has
# <a href="http://www.nrc.ca/inms/time/tze.html">
# information about standard and daylight saving time zones in Canada.
# </a> (updated periodically).
# Its unofficial information is often taken from Matthews and Vincent.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Canada 1918 only - Apr 14 2:00 1:00 D
Rule Canada 1918 only - Oct 31 2:00 0 S
Rule Canada 1942 only - Feb 9 2:00 1:00 W # War
Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule Canada 1945 only - Sep 30 2:00 0 S
Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
Rule Canada 1974 max - Oct lastSun 2:00 0 S
Rule Canada 1987 max - Apr Sun>=1 2:00 1:00 D
# Newfoundland (and far southeast Labrador)
# From Paul Eggert (2000-10-02):
# Matthews and Vincent (1998) write that Labrador should use NST/NDT,
# but the only part of Labrador that follows the rules is the
# southeast corner, including Port Hope Simpson and Mary's Harbour,
# but excluding, say, Black Tickle.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule StJohns 1917 only - Apr 8 2:00 1:00 D
Rule StJohns 1917 only - Sep 17 2:00 0 S
# Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks.
Rule StJohns 1919 only - May 5 23:00 1:00 D
Rule StJohns 1919 only - Aug 12 23:00 0 S
# For 1931-1935 Whitman gives Apr same date; go with Shanks.
Rule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D
Rule StJohns 1920 1935 - Oct lastSun 23:00 0 S
# For 1936-1941 Whitman gives May Sun>=8 and Oct Sun>=1; go with Shanks.
Rule StJohns 1936 1941 - May Mon>=9 0:00 1:00 D
Rule StJohns 1936 1941 - Oct Mon>=2 0:00 0 S
# Whitman gives the following transitions:
# 1942 03-01/12-31, 1943 05-30/09-05, 1944 07-10/09-02, 1945 01-01/10-07
# but go with Shanks and assume they used Canadian rules.
# For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives
# Apr 30 - Sep 24; go with Shanks.
Rule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D
Rule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S
Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D
Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S
Rule StJohns 1960 1986 - Oct lastSun 2:00 0 S
# From Paul Eggert (2000-10-02):
# INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches
# at 00:01 local time. For now, assume it started in 1987.
Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D
Rule StJohns 1987 max - Oct lastSun 0:01 0 S
Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD
Rule StJohns 1989 max - Apr Sun>=1 0:01 1:00 D
# St John's has an apostrophe, but Posix file names can't have apostrophes.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/St_Johns -3:30:52 - LMT 1884
-3:30:52 StJohns N%sT 1918
-3:30:52 Canada N%sT 1919
-3:30:52 StJohns N%sT 1935 Mar 30
-3:30 StJohns N%sT 1942 May 11
-3:30 Canada N%sT 1946
-3:30 StJohns N%sT
# most of east Labrador
# The name `Happy Valley-Goose Bay' is too long; use `Goose Bay'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
-3:30:52 - NST 1918
-3:30:52 Canada N%sT 1919
-3:30:52 - NST 1935 Mar 30
-3:30 - NST 1936
-3:30 StJohns N%sT 1942 May 11
-3:30 Canada N%sT 1946
-3:30 StJohns N%sT 1966 Mar 15 2:00
-4:00 StJohns A%sT
# west Labrador, New Brunswick, Nova Scotia, Prince Edward I
# From Paul Eggert (1996-06-12):
# Shanks writes that since 1970 most of this region has been like Halifax.
# Many locales did not observe peacetime DST until 1972;
# Glace Bay, NS is the largest that we know of.
# Shanks also writes that Liverpool, NS was the only town in Canada to observe
# DST in 1971 but not 1970; for now we'll assume this is a typo.
# From Paul Eggert (2000-10-02):
# INMS (2000-09-12) says that, since 1988 at least, New Brunswick switches
# at 00:01 local time. FIXME: verify and create a new Zone for this.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Halifax 1916 only - Apr 1 0:00 1:00 D
Rule Halifax 1916 only - Oct 1 0:00 0 S
Rule Halifax 1920 only - May 9 0:00 1:00 D
Rule Halifax 1920 only - Aug 29 0:00 0 S
Rule Halifax 1921 only - May 6 0:00 1:00 D
Rule Halifax 1921 1922 - Sep 5 0:00 0 S
Rule Halifax 1922 only - Apr 30 0:00 1:00 D
Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D
Rule Halifax 1923 only - Sep 4 0:00 0 S
Rule Halifax 1924 only - Sep 15 0:00 0 S
Rule Halifax 1925 only - Sep 28 0:00 0 S
Rule Halifax 1926 only - May 16 0:00 1:00 D
Rule Halifax 1926 only - Sep 13 0:00 0 S
Rule Halifax 1927 only - May 1 0:00 1:00 D
Rule Halifax 1927 only - Sep 26 0:00 0 S
Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D
Rule Halifax 1928 only - Sep 9 0:00 0 S
Rule Halifax 1929 only - Sep 3 0:00 0 S
Rule Halifax 1930 only - Sep 15 0:00 0 S
Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S
Rule Halifax 1932 only - May 1 0:00 1:00 D
Rule Halifax 1933 only - Apr 30 0:00 1:00 D
Rule Halifax 1933 only - Oct 2 0:00 0 S
Rule Halifax 1934 only - May 20 0:00 1:00 D
Rule Halifax 1934 only - Sep 16 0:00 0 S
Rule Halifax 1935 only - Jun 2 0:00 1:00 D
Rule Halifax 1935 only - Sep 30 0:00 0 S
Rule Halifax 1936 only - Jun 1 0:00 1:00 D
Rule Halifax 1936 only - Sep 14 0:00 0 S
Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D
Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S
Rule Halifax 1939 only - May 28 0:00 1:00 D
Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D
Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S
Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D
Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S
Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D
Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S
Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D
Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D
Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
-4:00 Halifax A%sT 1918
-4:00 Canada A%sT 1919
-4:00 Halifax A%sT 1942 Feb 9 2:00s
-4:00 Canada A%sT 1946
-4:00 Halifax A%sT 1974
-4:00 Canada A%sT
Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
-4:00 Canada A%sT 1953
-4:00 Halifax A%sT 1954
-4:00 - AST 1972
-4:00 Halifax A%sT 1974
-4:00 Canada A%sT
# Ontario, Quebec
# From Paul Eggert (1996-06-12):
# Shanks writes that since 1970 most of Ontario has been like Toronto,
# and most of Quebec has been like Montreal.
# Thunder Bay skipped DST in 1973.
# Many smaller locales did not observe peacetime DST until 1974;
# Nipigon (EST) and Rainy River (CST) are the largest that we know of.
# Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
# From Mark Brader (2003-07-26):
# [According to the Toronto Star] Orillia, Ontario, adopted DST
# effective Saturday, 1912-06-22, 22:00; the article mentions that
# Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw
# have already done so. In Orillia DST was to run until Saturday,
# 1912-08-31 (no time mentioned), but it was met with considerable
# hostility from certain segments of the public, and was revoked after
# only two weeks -- I copied it as Saturday, 1912-07-07, 22:00, but
# presumably that should be -07-06. (1912-06-19, -07-12; also letters
# earlier in June).
#
# Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
# From Paul Eggert (1997-10-17):
# Mark Brader writes that an article in the 1997-10-14 Toronto Star
# says that Atikokan, Ontario currently does not observe DST,
# but will vote on 11-10 whether to use EST/EDT.
# He also writes that the
# <a href="http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html">
# Ontario Time Act (1990, Chapter T.9)
# </a>
# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT.
# Officially Atikokan is therefore on CST/CDT, and most likely this report
# concerns a non-official time observed as a matter of local practice.
# For what it's worth, Shanks says that Atikokan has agreed with
# Rainy River ever since standard time was introduced.
# From Paul Eggert (2000-10-02):
# Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and
# New Osnaburgh observe CST all year, that Big Trout Lake observes
# CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in
# violation of the official Ontario rules.
# They also write that Quebec east of the -63 meridian is supposed to
# observe AST, but residents as far east as Natashquan use EST/EDT,
# and residents east of Natashquan use AST.
# We probably need Zones for far east Quebec and for Atikokan,
# but we don't know when their practices started.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mont 1917 only - Mar 25 2:00 1:00 D
Rule Mont 1917 only - Apr 24 0:00 0 S
Rule Mont 1919 only - Mar 31 2:30 1:00 D
Rule Mont 1919 only - Oct 25 2:30 0 S
Rule Mont 1920 only - May 2 2:30 1:00 D
Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S
Rule Mont 1921 only - May 1 2:00 1:00 D
Rule Mont 1922 only - Apr 30 2:00 1:00 D
Rule Mont 1924 only - May 17 2:00 1:00 D
Rule Mont 1924 1926 - Sep lastSun 2:30 0 S
Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D
# The 1927-to-1937 rules can be expressed more simply as
# Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D
# Rule Mont 1927 1937 - Sep lastSat 24:00 0 S
# The rules below avoid use of 24:00
# (which pre-1998 versions of zic cannot handle).
Rule Mont 1927 only - May 1 0:00 1:00 D
Rule Mont 1927 1932 - Sep lastSun 0:00 0 S
Rule Mont 1928 1931 - Apr lastSun 0:00 1:00 D
Rule Mont 1932 only - May 1 0:00 1:00 D
Rule Mont 1933 1940 - Apr lastSun 0:00 1:00 D
Rule Mont 1933 only - Oct 1 0:00 0 S
Rule Mont 1934 1939 - Sep lastSun 0:00 0 S
Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D
Rule Mont 1945 1948 - Sep lastSun 2:00 0 S
Rule Mont 1949 1950 - Oct lastSun 2:00 0 S
Rule Mont 1951 1956 - Sep lastSun 2:00 0 S
Rule Mont 1957 1973 - Oct lastSun 2:00 0 S
Rule Toronto 1919 only - Mar 30 23:30 1:00 D
Rule Toronto 1919 only - Oct 26 0:00 0 S
Rule Toronto 1920 only - May 2 2:00 1:00 D
Rule Toronto 1920 only - Sep 26 0:00 0 S
Rule Toronto 1921 only - May 15 2:00 1:00 D
Rule Toronto 1921 only - Sep 15 2:00 0 S
Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D
# Shanks says 1923-09-19; assume it's a typo and that "-16" was meant.
Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S
Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D
Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S
Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D
Rule Toronto 1932 only - May 1 2:00 1:00 D
Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D
Rule Toronto 1933 only - Oct 1 2:00 0 S
Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S
Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S
Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D
Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D
Rule Toronto 1947 1948 - Sep lastSun 0:00 0 S
Rule Toronto 1949 only - Nov lastSun 0:00 0 S
Rule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D
Rule Toronto 1950 only - Nov lastSun 2:00 0 S
Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S
# Shanks says Toronto ended DST a week early in 1971, namely on 1971-10-24,
# but Mark Brader wrote (2003-05-31) that he checked the 1971-10-30 issue
# of the Toronto Star, and it said that DST ended 1971-10-31 as usual.
Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S
# From Paul Eggert (2003-07-27):
# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and
# Port Arthur, Ontario, the principle of the Bill has been in
# operation for the past three years, and in the City of Moose Jaw,
# Saskatchewan, for one year."
# From David Bryan via Tory Tronrud, Director/Curator,
# Thunder Bay Museum (2003-11-12):
# There is some suggestion, however, that, by-law or not, daylight
# savings time was being practiced in Fort William and Port Arthur
# before 1909.... [I]n 1910, the line between the Eastern and Central
# Time Zones was permanently moved about two hundred miles west to
# include the Thunder Bay area.... When Canada adopted daylight
# savings time in 1916, Fort William and Port Arthur, having done so
# already, did not change their clocks.... During the Second World
# War,... [t]he cities agreed to implement DST during the summer
# months for the remainder of the war years.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Montreal -4:54:16 - LMT 1884
-5:00 Mont E%sT 1918
-5:00 Canada E%sT 1919
-5:00 Mont E%sT 1942 Feb 9 2:00s
-5:00 Canada E%sT 1946
-5:00 Mont E%sT 1974
-5:00 Canada E%sT
Zone America/Toronto -5:17:32 - LMT 1895
-5:00 Canada E%sT 1919
-5:00 Toronto E%sT 1942 Feb 9 2:00s
-5:00 Canada E%sT 1946
-5:00 Toronto E%sT 1974
-5:00 Canada E%sT
Zone America/Thunder_Bay -5:57:00 - LMT 1895
-6:00 - CST 1910
-5:00 - EST 1942
-5:00 Canada E%sT 1970
-5:00 Mont E%sT 1973
-5:00 - EST 1974
-5:00 Canada E%sT
Zone America/Nipigon -5:53:04 - LMT 1895
-5:00 Canada E%sT 1940 Sep 29
-5:00 1:00 EDT 1942 Feb 9 2:00s
-5:00 Canada E%sT
Zone America/Rainy_River -6:17:56 - LMT 1895
-6:00 Canada C%sT 1940 Sep 29
-6:00 1:00 CDT 1942 Feb 9 2:00s
-6:00 Canada C%sT
# Manitoba
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Winn 1916 only - Apr 23 0:00 1:00 D
Rule Winn 1916 only - Sep 17 0:00 0 S
Rule Winn 1918 only - Apr 14 2:00 1:00 D
Rule Winn 1918 only - Oct 31 2:00 0 S
Rule Winn 1937 only - May 16 2:00 1:00 D
Rule Winn 1937 only - Sep 26 2:00 0 S
Rule Winn 1942 only - Feb 9 2:00 1:00 W # War
Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule Winn 1945 only - Sep lastSun 2:00 0 S
Rule Winn 1946 only - May 12 2:00 1:00 D
Rule Winn 1946 only - Oct 13 2:00 0 S
Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D
Rule Winn 1947 1949 - Sep lastSun 2:00 0 S
Rule Winn 1950 only - May 1 2:00 1:00 D
Rule Winn 1950 only - Sep 30 2:00 0 S
Rule Winn 1951 1960 - Apr lastSun 2:00 1:00 D
Rule Winn 1951 1958 - Sep lastSun 2:00 0 S
Rule Winn 1959 only - Oct lastSun 2:00 0 S
Rule Winn 1960 only - Sep lastSun 2:00 0 S
Rule Winn 1963 only - Apr lastSun 2:00 1:00 D
Rule Winn 1963 only - Sep 22 2:00 0 S
Rule Winn 1966 1986 - Apr lastSun 2:00 1:00 D
Rule Winn 1966 1986 - Oct lastSun 2:00 0 S
Rule Winn 1987 max - Apr Sun>=1 2:00 1:00 D
# From Paul Eggert (2000-10-02):
# INMS (2000-09-12) says that, since 1988 at least, Manitoba switches from
# DST at 03:00 local time. For now, assume it started in 1987.
Rule Winn 1987 max - Oct lastSun 2:00s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
-6:00 Winn C%sT
# Saskatchewan
# From Mark Brader (2003-07-26):
# The first actual adoption of DST in Canada was at the municipal
# level. As the [Toronto] Star put it (1912-06-07), "While people
# elsewhere have long been talking of legislation to save daylight,
# the city of Moose Jaw [Saskatchewan] has acted on its own hook."
# DST in Moose Jaw began on Saturday, 1912-06-01 (no time mentioned:
# presumably late evening, as below), and would run until "the end of
# the summer". The discrepancy between municipal time and railroad
# time was noted.
# From Paul Eggert (2003-07-27):
# Willett (1914-03) notes that DST "has been in operation ... in the
# City of Moose Jaw, Saskatchewan, for one year."
# From Paul Eggert (2000-10-02):
# Shanks writes that since 1970 most of this region has been like Regina.
# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
# Other western towns (e.g. Lloydminster) are like Edmonton.
# Matthews and Vincent (1998) write that Denare Beach and Creighton
# are like Winnipeg, in violation of Saskatchewan law.
# From W. Jones <jones@skdad.usask.ca> (1992-11-06):
# The. . .below is based on information I got from our law library, the
# provincial archives, and the provincial Community Services department.
# A precise history would require digging through newspaper archives, and
# since you didn't say what you wanted, I didn't bother.
#
# Saskatchewan is split by a time zone meridian (105W) and over the years
# the boundary became pretty ragged as communities near it reevaluated
# their affiliations in one direction or the other. In 1965 a provincial
# referendum favoured legislating common time practices.
#
# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
# Saskatchewan 1978) was proclaimed, and established that the eastern
# part of Saskatchewan would use CST year round, that districts in
# northwest Saskatchewan would by default follow CST but could opt to
# follow Mountain Time rules (thus 1 hour difference in the winter and
# zero in the summer), and that districts in southwest Saskatchewan would
# by default follow MT but could opt to follow CST.
#
# It took a few years for the dust to settle (I know one story of a town
# on one time zone having its school in another, such that a mom had to
# serve her family lunch in two shifts), but presently it seems that only
# a few towns on the border with Alberta (e.g. Lloydminster) follow MT
# rules any more; all other districts appear to have used CST year round
# since sometime in the 1960s.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Regina 1918 only - Apr 14 2:00 1:00 D
Rule Regina 1918 only - Oct 31 2:00 0 S
Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S
Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D
Rule Regina 1937 only - Oct Sun>=8 0:00 0 S
Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
Rule Regina 1942 only - Feb 9 2:00 1:00 W # War
Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule Regina 1945 only - Sep lastSun 2:00 0 S
Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D
Rule Regina 1946 only - Oct Sun>=8 2:00 0 S
Rule Regina 1947 1957 - Apr lastSun 2:00 1:00 D
Rule Regina 1947 1957 - Sep lastSun 2:00 0 S
Rule Regina 1959 only - Apr lastSun 2:00 1:00 D
Rule Regina 1959 only - Oct lastSun 2:00 0 S
#
Rule Swift 1957 only - Apr lastSun 2:00 1:00 D
Rule Swift 1957 only - Oct lastSun 2:00 0 S
Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D
Rule Swift 1959 only - Oct lastSun 2:00 0 S
Rule Swift 1960 1961 - Sep lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Regina -6:58:36 - LMT 1905 Sep
-7:00 Regina M%sT 1960 Apr lastSun 2:00
-6:00 - CST
Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
-7:00 Canada M%sT 1946 Apr lastSun 2:00
-7:00 Regina M%sT 1950
-7:00 Swift M%sT 1972 Apr lastSun 2:00
-6:00 - CST
# Alberta
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
Rule Edm 1918 only - Oct 31 2:00 0 S
Rule Edm 1919 only - May 27 2:00 0 S
Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D
Rule Edm 1920 only - Oct lastSun 2:00 0 S
Rule Edm 1921 1923 - Sep lastSun 2:00 0 S
Rule Edm 1942 only - Feb 9 2:00 1:00 W # War
Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule Edm 1945 only - Sep lastSun 2:00 0 S
Rule Edm 1947 only - Apr lastSun 2:00 1:00 D
Rule Edm 1947 only - Sep lastSun 2:00 0 S
Rule Edm 1967 only - Apr lastSun 2:00 1:00 D
Rule Edm 1967 only - Oct lastSun 2:00 0 S
Rule Edm 1969 only - Apr lastSun 2:00 1:00 D
Rule Edm 1969 only - Oct lastSun 2:00 0 S
Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D
Rule Edm 1972 max - Oct lastSun 2:00 0 S
Rule Edm 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Edmonton -7:33:52 - LMT 1906 Sep
-7:00 Edm M%sT
# British Columbia
# From Paul Eggert (2000-10-02):
# Shanks writes that since 1970 most of this region has been like Vancouver.
# Dawson Creek uses MST. Much of east BC is like Edmonton.
# Matthews and Vincent (1998) write that Creston is like Dawson Creek.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Vanc 1918 only - Apr 14 2:00 1:00 D
Rule Vanc 1918 only - Oct 31 2:00 0 S
Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War
Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule Vanc 1945 only - Sep 30 2:00 0 S
Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
Rule Vanc 1946 only - Oct 13 2:00 0 S
Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
Rule Vanc 1962 max - Oct lastSun 2:00 0 S
Rule Vanc 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Vancouver -8:12:28 - LMT 1884
-8:00 Vanc P%sT
Zone America/Dawson_Creek -8:00:56 - LMT 1884
-8:00 Canada P%sT 1947
-8:00 Vanc P%sT 1972 Aug 30 2:00
-7:00 - MST
# Northwest Territories, Nunavut, Yukon
# From Paul Eggert (1999-10-29):
# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
# Mathew Englander <mathew@io.org> (1996-10-07) gives the following refs:
# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
# c. 7 defines Yukon standard time as UTC-9. This is still valid;
# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).
# * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00.
# * O.I.C. 1980/02 established DST.
# * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
# Shanks says Yukon's 1973-10-28 switch was at 2:00; go with Englander.
# From Rives McDow (1999-09-04):
# Nunavut ... moved ... to incorporate the whole territory into one time zone.
# <a href="http://www.nunatsiaq.com/nunavut/nvt90903_13.html">
# Nunavut moves to single time zone Oct. 31
# </a>
#
# From Antoine Leca (1999-09-06):
# We then need to create a new timezone for the Kitikmeot region of Nunavut
# to differentiate it from the Yellowknife region.
# From Paul Eggert (1999-09-20):
# <a href="http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html">
# Basic Facts: The New Territory
# </a> (1999) reports that Pangnirtung operates on eastern time,
# and that Coral Harbour does not observe DST. We don't know when
# Pangnirtung switched to eastern time; we'll guess 1995.
# We'll ignore the claim about Coral Harbour for now,
# since we have no further info.
# From Rives McDow (1999-11-08):
# On October 31, when the rest of Nunavut went to Central time,
# Pangnirtung wobbled. Here is the result of their wobble:
#
# The following businesses and organizations in Pangnirtung use Central Time:
#
# First Air, Power Corp, Nunavut Construction, Health Center, RCMP,
# Eastern Arctic National Parks, A & D Specialist
#
# The following businesses and organizations in Pangnirtung use Eastern Time:
#
# Hamlet office, All other businesses, Both schools, Airport operator
#
# This has made for an interesting situation there, which warranted the news.
# No one there that I spoke with seems concerned, or has plans to
# change the local methods of keeping time, as it evidently does not
# really interfere with any activities or make things difficult locally.
# They plan to celebrate New Year's turn-over twice, one hour apart,
# so it appears that the situation will last at least that long.
# The Nunavut Intergovernmental Affairs hopes that they will "come to
# their senses", but the locals evidently don't see any problem with
# the current state of affairs.
# From Michaela Rodrigue, writing in the
# <a href="http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html">
# Nunatsiaq News (1999-11-19)</a>:
# Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones,
# central - or Nunavut time - for government offices, and eastern time
# for municipal offices and schools.... Igloolik [was similar but then]
# made the switch to central time on Saturday, Nov. 6.
# From Paul Eggert (2000-10-02):
# Matthews and Vincent (1998) say the following, but we lack histories
# for these potential new Zones.
#
# The Canadian Forces station at Alert uses Eastern Time while the
# handful of residents at the Eureka weather station [in the Central
# zone] skip daylight savings. Baffin Island, which is crossed by the
# Central, Eastern and Atlantic Time zones only uses Eastern Time.
# Gjoa Haven, Taloyoak and Pelly Bay all use Mountain instead of
# Central Time and Southampton Island [in the Central zone] is not
# required to use daylight savings.
# From
# <a href="http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html">
# Nunavut now has two time zones
# </a> (2000-11-10):
# The Nunavut government would allow its employees in Kugluktuk and
# Cambridge Bay to operate on central time year-round, putting them
# one hour behind the rest of Nunavut for six months during the winter.
# At the end of October the two communities had rebelled against
# Nunavut's unified time zone, refusing to shift to eastern time with
# the rest of the territory for the winter. Cambridge Bay remained on
# central time, while Kugluktuk, even farther west, reverted to
# mountain time, which they had used before the advent of Nunavut's
# unified time zone in 1999.
#
# From Rives McDow (2001-01-20), quoting the Nunavut government:
# The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
# From Paul Eggert (2000-12-04):
# Let's just keep track of the official times for now.
# From Rives McDow (2001-03-07):
# The premier of Nunavut has issued a ministerial statement advising
# that effective 2001-04-01, the territory of Nunavut will revert
# back to three time zones (mountain, central, and eastern). Of the
# cities in Nunavut, Coral Harbor is the only one that I know of that
# has said it will not observe dst, staying on EST year round. I'm
# checking for more info, and will get back to you if I come up with
# more.
# [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
Rule NT_YK 1918 only - Oct 27 2:00 0 S
Rule NT_YK 1919 only - May 25 2:00 1:00 D
Rule NT_YK 1919 only - Nov 1 0:00 0 S
Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
Rule NT_YK 1945 only - Sep 30 2:00 0 S
Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
Rule NT_YK 1980 max - Oct lastSun 2:00 0 S
Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Pangnirtung -4:22:56 - LMT 1884
-4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
-5:00 Canada E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay before 1987
-5:00 NT_YK E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
Zone America/Rankin_Inlet -6:08:40 - LMT 1884
-6:00 NT_YK C%sT 2000 Oct 29 2:00
-5:00 - EST 2001 Apr 1 3:00
-6:00 Canada C%sT
Zone America/Cambridge_Bay -7:00:20 - LMT 1884
-7:00 NT_YK M%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 - EST 2000 Nov 5 0:00
-6:00 - CST 2001 Apr 1 3:00
-7:00 Canada M%sT
Zone America/Yellowknife -7:37:24 - LMT 1884
-7:00 NT_YK M%sT
Zone America/Inuvik -8:54:00 - LMT 1884
-8:00 NT_YK P%sT 1979 Apr lastSun 2:00
-7:00 NT_YK M%sT
Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
-9:00 NT_YK Y%sT 1966 Jul 1 2:00
-8:00 NT_YK P%sT
Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
-9:00 NT_YK Y%sT 1973 Oct 28 0:00
-8:00 NT_YK P%sT
###############################################################################
# Mexico
# From Paul Eggert (2001-03-05):
# The Investigation and Analysis Service of the
# Mexican Library of Congress (MLoC) has published a
# <a href="http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/">
# history of Mexican local time (in Spanish)
# </a>.
#
# Here are the discrepancies between Shanks and the MLoC.
# (In all cases we go with the MLoC.)
# Shanks reports that Baja was at -8:00 in 1922/1923.
# Shanks says the 1930 transition in Baja was 1930-11-16.
# Shanks reports no DST during summer 1931.
# Shanks reports a transition at 1032-03-30 23:00, not 1932-04-01.
# Shanks does not report transitions for Baja in 1945 or 1948.
# Shanks reports southern Mexico transitions on 1981-12-01, not 12-23.
# Shanks says Quintana Roo switched to -6:00 on 1982-12-02, and to -5:00
# on 1997-10-26 at 02:00.
# From Gwillim Law (2001-02-20):
# There are some other discrepancies between the Decrees page and the
# tz database. I think they can best be explained by supposing that
# the researchers who prepared the Decrees page failed to find some of
# the relevant documents.
# From Paul Eggert (2000-07-26):
# Shanks gives 1942-04-01 instead of 1942-04-24, and omits the 1981
# and 1988 DST experiments. Go with spin.com.mx.
# From Alan Perry <alan.perry@eng.sun.com> (1996-02-15):
# A guy from our Mexico subsidiary finally found the Presidential Decree
# outlining the timezone changes in Mexico.
#
# ------------- Begin Forwarded Message -------------
#
# I finally got my hands on the Official Presidential Decree that sets up the
# rules for the DST changes. The rules are:
#
# 1. The country is divided in 3 timezones:
# - Baja California Norte (the Mexico/BajaNorte TZ)
# - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ)
# - The rest of the country (the Mexico/General TZ)
#
# 2. From the first Sunday in April at 2:00 AM to the last Sunday in October
# at 2:00 AM, the times in each zone are as follows:
# BajaNorte: GMT+7
# BajaSur: GMT+6
# General: GMT+5
#
# 3. The rest of the year, the times are as follows:
# BajaNorte: GMT+8
# BajaSur: GMT+7
# General: GMT+6
#
# The Decree was published in Mexico's Official Newspaper on January 4th.
#
# -------------- End Forwarded Message --------------
# From Paul Eggert (1996-06-12):
# For an English translation of the decree, see
# <a href="http://mexico-travel.com/extra/timezone_eng.html">
# ``Diario Oficial: Time Zone Changeover'' (1996-01-04).
# </a>
# From Rives McDow (1998-10-08):
# The State of Quintana Roo has reverted back to central STD and DST times
# (i.e. UTC -0600 and -0500 as of 1998-08-02).
# From Rives McDow (2000-01-10):
# Effective April 4, 1999 at 2:00 AM local time, Sonora changed to the time
# zone 5 hours from the International Date Line, and will not observe daylight
# savings time so as to stay on the same time zone as the southern part of
# Arizona year round.
# From Jesper Norgaard, translating
# <http://www.reforma.com/nacional/articulo/064327/> (2001-01-17):
# In Oaxaca, the 55.000 teachers from the Section 22 of the National
# Syndicate of Education Workers, refuse to apply daylight saving each
# year, so that the more than 10,000 schools work at normal hour the
# whole year.
# From Gwillim Law (2001-01-19):
# <http://www.reforma.com/negocios_y_dinero/articulo/064481/> ... says
# (translated):...
# January 17, 2000 - The Energy Secretary, Ernesto Martens, announced
# that Summer Time will be reduced from seven to five months, starting
# this year....
# <http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001>
# [translated], says "summer time will ... take effect on the first Sunday
# in May, and end on the last Sunday of September.
# From Arthur David Olson (2001-01-25):
# The 2001-01-24 traditional Washington Post contained the page one
# story "Timely Issue Divides Mexicans."...
# http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html
# ... Mexico City Mayor Lopez Obrador "...is threatening to keep
# Mexico City and its 20 million residents on a different time than
# the rest of the country..." In particular, Lopez Obrador would abolish
# observation of Daylight Saving Time.
# <a href="http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre">
# Official statute published by the Energy Department
# </a> (2001-02-01) shows Baja and Chihauhua as still using US DST rules,
# and Sonora with no DST. This was reported by Jesper Norgaard (2001-02-03).
# From Paul Eggert (2001-03-03):
#
# <a href="http://www.latimes.com/news/nation/20010303/t000018766.html">
# James F. Smith writes in today's LA Times
# </a>
# * Sonora will continue to observe standard time.
# * Last week Mexico City's mayor Andres Manuel Lopez Obrador decreed that
# the Federal District will not adopt DST.
# * 4 of 16 district leaders announced they'll ignore the decree.
# * The decree does not affect federal-controlled facilities including
# the airport, banks, hospitals, and schools.
#
# For now we'll assume that the Federal District will bow to federal rules.
# From Jesper Norgaard (2001-04-01):
# I found some references to the Mexican application of daylight
# saving, which modifies what I had already sent you, stating earlier
# that a number of northern Mexican states would go on daylight
# saving. The modification reverts this to only cover Baja California
# (Norte), while all other states (except Sonora, who has no daylight
# saving all year) will follow the original decree of president
# Vicente Fox, starting daylight saving May 6, 2001 and ending
# September 30, 2001.
# References: "Diario de Monterrey" <www.diariodemonterrey.com/index.asp>
# Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
# From Reuters (2001-09-04):
# Mexico's Supreme Court on Tuesday declared that daylight savings was
# unconstitutional in Mexico City, creating the possibility the
# capital will be in a different time zone from the rest of the nation
# next year.... The Supreme Court's ruling takes effect at 2:00
# a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to
# standard time. "This is so residents of the Federal District are not
# subject to unexpected time changes," a statement from the court said.
# From Jesper Norgaard Welen (2002-03-12):
# ... consulting my local grocery store(!) and my coworkers, they all insisted
# that a new decision had been made to reinstate US style DST in Mexico....
# http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20)
# confirms this. Sonora as usual is the only state where DST is not applied.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mexico 1939 only - Feb 5 0:00 1:00 D
Rule Mexico 1939 only - Jun 25 0:00 0 S
Rule Mexico 1940 only - Dec 9 0:00 1:00 D
Rule Mexico 1941 only - Apr 1 0:00 0 S
Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War
Rule Mexico 1944 only - May 1 0:00 0 S
Rule Mexico 1950 only - Feb 12 0:00 1:00 D
Rule Mexico 1950 only - Jul 30 0:00 0 S
Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
Rule Mexico 2001 only - Sep lastSun 2:00 0 S
Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
Rule Mexico 2002 max - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Quintana Roo
Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
-6:00 - CST 1981 Dec 23
-5:00 Mexico E%sT 1998 Aug 2 2:00
-6:00 Mexico C%sT
# Campeche, Yucatan
Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
-6:00 - CST 1981 Dec 23
-5:00 - EST 1982 Dec 2
-6:00 Mexico C%sT
# Coahuila, Durango, Nuevo Leon, Tamaulipas
Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44
-6:00 - CST 1988
-6:00 US C%sT 1989
-6:00 Mexico C%sT
# Central Mexico
Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
-7:00 - MST 1931 May 1 23:00
-6:00 - CST 1931 Oct
-7:00 - MST 1932 Apr 1
-6:00 Mexico C%sT 2001 Sep 30 02:00
-6:00 - CST 2002 Feb 20
-6:00 Mexico C%sT
# Chihuahua
Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
-7:00 - MST 1931 May 1 23:00
-6:00 - CST 1931 Oct
-7:00 - MST 1932 Apr 1
-6:00 - CST 1996
-6:00 Mexico C%sT 1998
-6:00 - CST 1998 Apr Sun>=1 3:00
-7:00 Mexico M%sT
# Sonora
Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
-7:00 - MST 1931 May 1 23:00
-6:00 - CST 1931 Oct
-7:00 - MST 1932 Apr 1
-6:00 - CST 1942 Apr 24
-7:00 - MST 1949 Jan 14
-8:00 - PST 1970
-7:00 Mexico M%sT 1999
-7:00 - MST
# Baja California Sur, Nayarit, Sinaloa
Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
-7:00 - MST 1931 May 1 23:00
-6:00 - CST 1931 Oct
-7:00 - MST 1932 Apr 1
-6:00 - CST 1942 Apr 24
-7:00 - MST 1949 Jan 14
-8:00 - PST 1970
-7:00 Mexico M%sT
# Baja California
Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
-7:00 - MST 1924
-8:00 - PST 1927 Jun 10 23:00
-7:00 - MST 1930 Nov 15
-8:00 - PST 1931 Apr 1
-8:00 1:00 PDT 1931 Sep 30
-8:00 - PST 1942 Apr 24
-8:00 1:00 PWT 1945 Nov 12
-8:00 - PST 1948 Apr 5
-8:00 1:00 PDT 1949 Jan 14
-8:00 - PST 1954
-8:00 CA P%sT 1961
-8:00 - PST 1976
-8:00 US P%sT 1996
-8:00 Mexico P%sT 2001
-8:00 US P%sT 2002 Feb 20
-8:00 Mexico P%sT
# From Paul Eggert (2001-03-05):
# Formerly there was an America/Ensenada zone, which differed from
# America/Tijuana only in that it did not observe DST from 1976
# through 1995. This was as per Shanks. However, Guy Harris reports
# that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and
# Tijuana observe DST," which contradicts Shanks but does imply that
# DST-observance was a town-by-town matter back then. This concerns
# data after 1970 so most likely there should be at least one Zone
# other than America/Tijuana for Baja, but it's not clear yet what its
# name or contents should be.
#
# Revillagigedo Is
# no information
###############################################################################
# Anguilla
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Anguilla -4:12:16 - LMT 1912 Mar 2
-4:00 - AST
# Antigua and Barbuda
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
-5:00 - EST 1951
-4:00 - AST
# Bahamas
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Bahamas 1964 max - Oct lastSun 2:00 0 S
Rule Bahamas 1964 1986 - Apr lastSun 2:00 1:00 D
Rule Bahamas 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Nassau -5:09:24 - LMT 1912 Mar 2
-5:00 Bahamas E%sT
# Barbados
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Barb 1977 only - Jun 12 2:00 1:00 D
Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
Rule Barb 1979 only - Sep 30 2:00 0 S
Rule Barb 1980 only - Sep 25 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
-3:58:28 - BMT 1932 # Bridgetown Mean Time
-4:00 Barb A%sT
# Belize
# Whitman entirely disagrees with Shanks; go with Shanks.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
Rule Belize 1973 only - Dec 5 0:00 1:00 D
Rule Belize 1974 only - Feb 9 0:00 0 S
Rule Belize 1982 only - Dec 18 0:00 1:00 D
Rule Belize 1983 only - Feb 12 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Belize -5:52:48 - LMT 1912 Apr
-6:00 Belize C%sT
# Bermuda
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton
-4:00 - AST 1974 Apr 28 2:00
-4:00 Bahamas A%sT
# Cayman Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
-5:07:12 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST
# Costa Rica
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
# IATA SSIM (1991-09) says the following was at 1:00; go with Shanks.
Rule CR 1991 only - Jul 1 0:00 0 S
Rule CR 1992 only - Mar 15 0:00 0 S
# There are too many San Joses elsewhere, so we'll use `Costa Rica'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose
-5:36:20 - SJMT 1921 Jan 15 # San Jose Mean Time
-6:00 CR C%sT
# Coco
# no information; probably like America/Costa_Rica
# Cuba
# From Arthur David Olson (1999-03-29):
# The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
# the Cuban National Team and the Baltimore Orioles was carried live on
# the Orioles Radio Network, including affiliate WTOP in Washington, DC.
# During the game, play-by-play announcer Jim Hunter noted that
# "We'll be losing two hours of sleep...Cuba switched to Daylight Saving
# Time today." (The "two hour" remark referred to losing one hour of
# sleep on 1999-03-28--when the announcers were in Cuba as it switched
# to DST--and one more hour on 1999-04-04--when the announcers will have
# returned to Baltimore, which switches on that date.)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cuba 1928 only - Jun 10 0:00 1:00 D
Rule Cuba 1928 only - Oct 10 0:00 0 S
Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D
Rule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S
Rule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D
Rule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S
Rule Cuba 1965 only - Jun 1 0:00 1:00 D
Rule Cuba 1965 only - Sep 30 0:00 0 S
Rule Cuba 1966 only - May 29 0:00 1:00 D
Rule Cuba 1966 only - Oct 2 0:00 0 S
Rule Cuba 1967 only - Apr 8 0:00 1:00 D
Rule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S
Rule Cuba 1968 only - Apr 14 0:00 1:00 D
Rule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D
Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S
Rule Cuba 1972 1974 - Oct 8 0:00 0 S
Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S
Rule Cuba 1978 only - May 7 0:00 1:00 D
Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S
Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D
Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D
Rule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D
Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S
Rule Cuba 1996 only - Oct 6 0:00s 0 S
Rule Cuba 1997 only - Oct 12 0:00s 0 S
Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D
Rule Cuba 1998 max - Oct lastSun 0:00s 0 S
Rule Cuba 2000 max - Apr Sun>=1 0:00s 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Havana -5:29:28 - LMT 1890
-5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
-5:00 Cuba C%sT
# Dominica
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
-4:00 - AST
# Dominican Republic
# From Steffen Thorsen (2000-10-30):
# Enrique Morales reported to me that the Dominican Republic has changed the
# time zone to Eastern Standard Time as of Sunday 29 at 2 am....
# http://www.listin.com.do/antes/261000/republica/princi.html
# From Paul Eggert (2000-12-04):
# That URL (2000-10-26, in Spanish) says they planned to use US-style DST.
# From Rives McDow (2000-12-01):
# Dominican Republic changed its mind and presidential decree on Tuesday,
# November 28, 2000, with a new decree. On Sunday, December 3 at 1:00 AM the
# Dominican Republic will be reverting to 8 hours from the International Date
# Line, and will not be using DST in the foreseeable future. The reason they
# decided to use DST was to be in synch with Puerto Rico, who was also going
# to implement DST. When Puerto Rico didn't implement DST, the president
# decided to revert.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule DR 1966 only - Oct 30 0:00 1:00 D
Rule DR 1967 only - Feb 28 0:00 0 S
Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
Rule DR 1970 only - Feb 21 0:00 0 S
Rule DR 1971 only - Jan 20 0:00 0 S
Rule DR 1972 1974 - Jan 21 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Santo_Domingo -4:39:36 - LMT 1890
-4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
-5:00 DR E%sT 1974 Oct 27
-4:00 - AST 2000 Oct 29 02:00
-5:00 US E%sT 2000 Dec 3 01:00
-4:00 - AST
# El Salvador
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D
Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
# There are too many San Salvadors elsewhere, so use America/El_Salvador
# instead of America/San_Salvador.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
-6:00 Salv C%sT
# Grenada
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Grenada -4:07:00 - LMT 1911 Jul # St George's
-4:00 - AST
# Guadeloupe
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe a Pitre
-4:00 - AST
# Guatemala
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Guat 1973 only - Nov 25 0:00 1:00 D
Rule Guat 1974 only - Feb 24 0:00 0 S
Rule Guat 1983 only - May 21 0:00 1:00 D
Rule Guat 1983 only - Sep 22 0:00 0 S
Rule Guat 1991 only - Mar 23 0:00 1:00 D
Rule Guat 1991 only - Sep 7 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
-6:00 Guat C%sT
# Haiti
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Haiti 1983 only - May 8 0:00 1:00 D
Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
# Shanks says AT is 2:00, but IATA SSIM (1991/1997) says 1:00s. Go with IATA.
Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Port-au-Prince -4:49:20 - LMT 1890
-4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
-5:00 Haiti E%sT
# Honduras
# Shanks says 1921 Jan 1; go with Whitman's more precise Apr 1.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
-6:00 Salv C%sT
#
# Great Swan I ceded by US to Honduras in 1972
# Jamaica
# From Bob Devine (1988-01-28):
# Follows US rules.
# From U. S. Naval Observatory (1989-01-19):
# JAMAICA 5 H BEHIND UTC
# From Shanks:
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Jamaica -5:07:12 - LMT 1890 # Kingston
-5:07:12 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1974 Apr 28 2:00
-5:00 US E%sT 1984
-5:00 - EST
# Martinique
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
-4:04:20 - FFMT 1911 May # Fort-de-France MT
-4:00 - AST 1980 Apr 6
-4:00 1:00 ADT 1980 Sep 28
-4:00 - AST
# Montserrat
# From Paul Eggert (1997-08-31):
# Recent volcanic eruptions have forced evacuation of Plymouth, the capital.
# Luckily, Olveston, the current de facto capital, has the same longitude.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Olveston
-4:00 - AST
# Nicaragua
#
# From Steffen Thorsen (1998-12-29):
# Nicaragua seems to be back at -6:00 but I have not been able to find when
# they changed from -5:00.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
Rule Nic 1992 only - Jan 1 4:00 1:00 D
Rule Nic 1992 only - Sep 24 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Managua -5:45:08 - LMT 1890
-5:45:12 - MMT 1934 Jun 23 # Managua Mean Time?
-6:00 - CST 1973 May
-5:00 - EST 1975 Feb 16
-6:00 Nic C%sT 1993 Jan 1 4:00
-5:00 - EST 1998 Dec
-6:00 - CST
# Panama
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Panama -5:18:08 - LMT 1890
-5:19:36 - CMT 1908 Apr 22 # Colon Mean Time
-5:00 - EST
# Puerto Rico
# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
-4:00 - AST 1942 May 3
-4:00 1:00 AWT 1945 Sep 30 2:00
-4:00 - AST
# St Kitts-Nevis
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
-4:00 - AST
# St Lucia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
-4:04:00 - CMT 1912 # Castries Mean Time
-4:00 - AST
# St Pierre and Miquelon
# There are too many St Pierres elsewhere, so we'll use `Miquelon'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-4:00 - AST 1980 May
-3:00 - PMST 1987 # Pierre & Miquelon Time
-3:00 Canada PM%sT
# St Vincent and the Grenadines
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
-4:04:56 - KMT 1912 # Kingstown Mean Time
-4:00 - AST
# Turks and Caicos
# From Paul Eggert (1998-08-06):
# Shanks says they use US DST rules, but IATA SSIM (1991/1998)
# says they switch at midnight. Go with IATA SSIM.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule TC 1979 1986 - Apr lastSun 0:00 1:00 D
Rule TC 1979 max - Oct lastSun 0:00 0 S
Rule TC 1987 max - Apr Sun>=1 0:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Grand_Turk -4:44:32 - LMT 1890
-5:07:12 - KMT 1912 Feb # Kingston Mean Time
-5:00 TC E%sT
# British Virgin Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
-4:00 - AST
# Virgin Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
-4:00 - AST
src/timezone/data/pacificnew 0 → 100644
View file @ 6a2b75c2
# @(#)pacificnew 7.10
# From Arthur David Olson (1989-04-05):
# On 1989-04-05, the U. S. House of Representatives passed (238-154) a bill
# establishing "Pacific Presidential Election Time"; it was not acted on
# by the Senate or signed into law by the President.
# You might want to change the "PE" (Presidential Election) below to
# "Q" (Quadrennial) to maintain three-character zone abbreviations.
# If you're really conservative, you might want to change it to "D".
# Avoid "L" (Leap Year), which won't be true in 2100.
# If Presidential Election Time is ever established, replace "XXXX" below
# with the year the law takes effect and uncomment the "##" lines.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
## Rule Twilite XXXX max - Apr Sun>=1 2:00 1:00 D
## Rule Twilite XXXX max uspres Oct lastSun 2:00 1:00 PE
## Rule Twilite XXXX max uspres Nov Sun>=7 2:00 0 S
## Rule Twilite XXXX max nonpres Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
## Zone America/Los_Angeles-PET -8:00 US P%sT XXXX
## -8:00 Twilite P%sT
# For now...
Link America/Los_Angeles US/Pacific-New ##
src/timezone/data/solar87 0 → 100644
View file @ 6a2b75c2
# @(#)solar87 7.3
# So much for footnotes about Saudi Arabia.
# Apparent noon times below are for Riyadh; your mileage will vary.
# Times were computed using formulas in the U.S. Naval Observatory's
# Almanac for Computers 1987; the formulas "will give EqT to an accuracy of
# [plus or minus two] seconds during the current year."
#
# Rounding to the nearest five seconds results in fewer than
# 256 different "time types"--a limit that's faced because time types are
# stored on disk as unsigned chars.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule sol87 1987 only - Jan 1 12:03:20s -0:03:20 -
Rule sol87 1987 only - Jan 2 12:03:50s -0:03:50 -
Rule sol87 1987 only - Jan 3 12:04:15s -0:04:15 -
Rule sol87 1987 only - Jan 4 12:04:45s -0:04:45 -
Rule sol87 1987 only - Jan 5 12:05:10s -0:05:10 -
Rule sol87 1987 only - Jan 6 12:05:40s -0:05:40 -
Rule sol87 1987 only - Jan 7 12:06:05s -0:06:05 -
Rule sol87 1987 only - Jan 8 12:06:30s -0:06:30 -
Rule sol87 1987 only - Jan 9 12:06:55s -0:06:55 -
Rule sol87 1987 only - Jan 10 12:07:20s -0:07:20 -
Rule sol87 1987 only - Jan 11 12:07:45s -0:07:45 -
Rule sol87 1987 only - Jan 12 12:08:10s -0:08:10 -
Rule sol87 1987 only - Jan 13 12:08:30s -0:08:30 -
Rule sol87 1987 only - Jan 14 12:08:55s -0:08:55 -
Rule sol87 1987 only - Jan 15 12:09:15s -0:09:15 -
Rule sol87 1987 only - Jan 16 12:09:35s -0:09:35 -
Rule sol87 1987 only - Jan 17 12:09:55s -0:09:55 -
Rule sol87 1987 only - Jan 18 12:10:15s -0:10:15 -
Rule sol87 1987 only - Jan 19 12:10:35s -0:10:35 -
Rule sol87 1987 only - Jan 20 12:10:55s -0:10:55 -
Rule sol87 1987 only - Jan 21 12:11:10s -0:11:10 -
Rule sol87 1987 only - Jan 22 12:11:30s -0:11:30 -
Rule sol87 1987 only - Jan 23 12:11:45s -0:11:45 -
Rule sol87 1987 only - Jan 24 12:12:00s -0:12:00 -
Rule sol87 1987 only - Jan 25 12:12:15s -0:12:15 -
Rule sol87 1987 only - Jan 26 12:12:30s -0:12:30 -
Rule sol87 1987 only - Jan 27 12:12:40s -0:12:40 -
Rule sol87 1987 only - Jan 28 12:12:55s -0:12:55 -
Rule sol87 1987 only - Jan 29 12:13:05s -0:13:05 -
Rule sol87 1987 only - Jan 30 12:13:15s -0:13:15 -
Rule sol87 1987 only - Jan 31 12:13:25s -0:13:25 -
Rule sol87 1987 only - Feb 1 12:13:35s -0:13:35 -
Rule sol87 1987 only - Feb 2 12:13:40s -0:13:40 -
Rule sol87 1987 only - Feb 3 12:13:50s -0:13:50 -
Rule sol87 1987 only - Feb 4 12:13:55s -0:13:55 -
Rule sol87 1987 only - Feb 5 12:14:00s -0:14:00 -
Rule sol87 1987 only - Feb 6 12:14:05s -0:14:05 -
Rule sol87 1987 only - Feb 7 12:14:10s -0:14:10 -
Rule sol87 1987 only - Feb 8 12:14:10s -0:14:10 -
Rule sol87 1987 only - Feb 9 12:14:15s -0:14:15 -
Rule sol87 1987 only - Feb 10 12:14:15s -0:14:15 -
Rule sol87 1987 only - Feb 11 12:14:15s -0:14:15 -
Rule sol87 1987 only - Feb 12 12:14:15s -0:14:15 -
Rule sol87 1987 only - Feb 13 12:14:15s -0:14:15 -
Rule sol87 1987 only - Feb 14 12:14:15s -0:14:15 -
Rule sol87 1987 only - Feb 15 12:14:10s -0:14:10 -
Rule sol87 1987 only - Feb 16 12:14:10s -0:14:10 -
Rule sol87 1987 only - Feb 17 12:14:05s -0:14:05 -
Rule sol87 1987 only - Feb 18 12:14:00s -0:14:00 -
Rule sol87 1987 only - Feb 19 12:13:55s -0:13:55 -
Rule sol87 1987 only - Feb 20 12:13:50s -0:13:50 -
Rule sol87 1987 only - Feb 21 12:13:45s -0:13:45 -
Rule sol87 1987 only - Feb 22 12:13:35s -0:13:35 -
Rule sol87 1987 only - Feb 23 12:13:30s -0:13:30 -
Rule sol87 1987 only - Feb 24 12:13:20s -0:13:20 -
Rule sol87 1987 only - Feb 25 12:13:10s -0:13:10 -
Rule sol87 1987 only - Feb 26 12:13:00s -0:13:00 -
Rule sol87 1987 only - Feb 27 12:12:50s -0:12:50 -
Rule sol87 1987 only - Feb 28 12:12:40s -0:12:40 -
Rule sol87 1987 only - Mar 1 12:12:30s -0:12:30 -
Rule sol87 1987 only - Mar 2 12:12:20s -0:12:20 -
Rule sol87 1987 only - Mar 3 12:12:05s -0:12:05 -
Rule sol87 1987 only - Mar 4 12:11:55s -0:11:55 -
Rule sol87 1987 only - Mar 5 12:11:40s -0:11:40 -
Rule sol87 1987 only - Mar 6 12:11:25s -0:11:25 -
Rule sol87 1987 only - Mar 7 12:11:15s -0:11:15 -
Rule sol87 1987 only - Mar 8 12:11:00s -0:11:00 -
Rule sol87 1987 only - Mar 9 12:10:45s -0:10:45 -
Rule sol87 1987 only - Mar 10 12:10:30s -0:10:30 -
Rule sol87 1987 only - Mar 11 12:10:15s -0:10:15 -
Rule sol87 1987 only - Mar 12 12:09:55s -0:09:55 -
Rule sol87 1987 only - Mar 13 12:09:40s -0:09:40 -
Rule sol87 1987 only - Mar 14 12:09:25s -0:09:25 -
Rule sol87 1987 only - Mar 15 12:09:10s -0:09:10 -
Rule sol87 1987 only - Mar 16 12:08:50s -0:08:50 -
Rule sol87 1987 only - Mar 17 12:08:35s -0:08:35 -
Rule sol87 1987 only - Mar 18 12:08:15s -0:08:15 -
Rule sol87 1987 only - Mar 19 12:08:00s -0:08:00 -
Rule sol87 1987 only - Mar 20 12:07:40s -0:07:40 -
Rule sol87 1987 only - Mar 21 12:07:25s -0:07:25 -
Rule sol87 1987 only - Mar 22 12:07:05s -0:07:05 -
Rule sol87 1987 only - Mar 23 12:06:50s -0:06:50 -
Rule sol87 1987 only - Mar 24 12:06:30s -0:06:30 -
Rule sol87 1987 only - Mar 25 12:06:10s -0:06:10 -
Rule sol87 1987 only - Mar 26 12:05:55s -0:05:55 -
Rule sol87 1987 only - Mar 27 12:05:35s -0:05:35 -
Rule sol87 1987 only - Mar 28 12:05:15s -0:05:15 -
Rule sol87 1987 only - Mar 29 12:05:00s -0:05:00 -
Rule sol87 1987 only - Mar 30 12:04:40s -0:04:40 -
Rule sol87 1987 only - Mar 31 12:04:25s -0:04:25 -
Rule sol87 1987 only - Apr 1 12:04:05s -0:04:05 -
Rule sol87 1987 only - Apr 2 12:03:45s -0:03:45 -
Rule sol87 1987 only - Apr 3 12:03:30s -0:03:30 -
Rule sol87 1987 only - Apr 4 12:03:10s -0:03:10 -
Rule sol87 1987 only - Apr 5 12:02:55s -0:02:55 -
Rule sol87 1987 only - Apr 6 12:02:35s -0:02:35 -
Rule sol87 1987 only - Apr 7 12:02:20s -0:02:20 -
Rule sol87 1987 only - Apr 8 12:02:05s -0:02:05 -
Rule sol87 1987 only - Apr 9 12:01:45s -0:01:45 -
Rule sol87 1987 only - Apr 10 12:01:30s -0:01:30 -
Rule sol87 1987 only - Apr 11 12:01:15s -0:01:15 -
Rule sol87 1987 only - Apr 12 12:00:55s -0:00:55 -
Rule sol87 1987 only - Apr 13 12:00:40s -0:00:40 -
Rule sol87 1987 only - Apr 14 12:00:25s -0:00:25 -
Rule sol87 1987 only - Apr 15 12:00:10s -0:00:10 -
Rule sol87 1987 only - Apr 16 11:59:55s 0:00:05 -
Rule sol87 1987 only - Apr 17 11:59:45s 0:00:15 -
Rule sol87 1987 only - Apr 18 11:59:30s 0:00:30 -
Rule sol87 1987 only - Apr 19 11:59:15s 0:00:45 -
Rule sol87 1987 only - Apr 20 11:59:05s 0:00:55 -
Rule sol87 1987 only - Apr 21 11:58:50s 0:01:10 -
Rule sol87 1987 only - Apr 22 11:58:40s 0:01:20 -
Rule sol87 1987 only - Apr 23 11:58:25s 0:01:35 -
Rule sol87 1987 only - Apr 24 11:58:15s 0:01:45 -
Rule sol87 1987 only - Apr 25 11:58:05s 0:01:55 -
Rule sol87 1987 only - Apr 26 11:57:55s 0:02:05 -
Rule sol87 1987 only - Apr 27 11:57:45s 0:02:15 -
Rule sol87 1987 only - Apr 28 11:57:35s 0:02:25 -
Rule sol87 1987 only - Apr 29 11:57:25s 0:02:35 -
Rule sol87 1987 only - Apr 30 11:57:15s 0:02:45 -
Rule sol87 1987 only - May 1 11:57:10s 0:02:50 -
Rule sol87 1987 only - May 2 11:57:00s 0:03:00 -
Rule sol87 1987 only - May 3 11:56:55s 0:03:05 -
Rule sol87 1987 only - May 4 11:56:50s 0:03:10 -
Rule sol87 1987 only - May 5 11:56:45s 0:03:15 -
Rule sol87 1987 only - May 6 11:56:40s 0:03:20 -
Rule sol87 1987 only - May 7 11:56:35s 0:03:25 -
Rule sol87 1987 only - May 8 11:56:30s 0:03:30 -
Rule sol87 1987 only - May 9 11:56:25s 0:03:35 -
Rule sol87 1987 only - May 10 11:56:25s 0:03:35 -
Rule sol87 1987 only - May 11 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 12 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 13 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 14 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 15 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 16 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 17 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 18 11:56:20s 0:03:40 -
Rule sol87 1987 only - May 19 11:56:25s 0:03:35 -
Rule sol87 1987 only - May 20 11:56:25s 0:03:35 -
Rule sol87 1987 only - May 21 11:56:30s 0:03:30 -
Rule sol87 1987 only - May 22 11:56:35s 0:03:25 -
Rule sol87 1987 only - May 23 11:56:40s 0:03:20 -
Rule sol87 1987 only - May 24 11:56:45s 0:03:15 -
Rule sol87 1987 only - May 25 11:56:50s 0:03:10 -
Rule sol87 1987 only - May 26 11:56:55s 0:03:05 -
Rule sol87 1987 only - May 27 11:57:00s 0:03:00 -
Rule sol87 1987 only - May 28 11:57:10s 0:02:50 -
Rule sol87 1987 only - May 29 11:57:15s 0:02:45 -
Rule sol87 1987 only - May 30 11:57:25s 0:02:35 -
Rule sol87 1987 only - May 31 11:57:30s 0:02:30 -
Rule sol87 1987 only - Jun 1 11:57:40s 0:02:20 -
Rule sol87 1987 only - Jun 2 11:57:50s 0:02:10 -
Rule sol87 1987 only - Jun 3 11:58:00s 0:02:00 -
Rule sol87 1987 only - Jun 4 11:58:10s 0:01:50 -
Rule sol87 1987 only - Jun 5 11:58:20s 0:01:40 -
Rule sol87 1987 only - Jun 6 11:58:30s 0:01:30 -
Rule sol87 1987 only - Jun 7 11:58:40s 0:01:20 -
Rule sol87 1987 only - Jun 8 11:58:50s 0:01:10 -
Rule sol87 1987 only - Jun 9 11:59:05s 0:00:55 -
Rule sol87 1987 only - Jun 10 11:59:15s 0:00:45 -
Rule sol87 1987 only - Jun 11 11:59:30s 0:00:30 -
Rule sol87 1987 only - Jun 12 11:59:40s 0:00:20 -
Rule sol87 1987 only - Jun 13 11:59:50s 0:00:10 -
Rule sol87 1987 only - Jun 14 12:00:05s -0:00:05 -
Rule sol87 1987 only - Jun 15 12:00:15s -0:00:15 -
Rule sol87 1987 only - Jun 16 12:00:30s -0:00:30 -
Rule sol87 1987 only - Jun 17 12:00:45s -0:00:45 -
Rule sol87 1987 only - Jun 18 12:00:55s -0:00:55 -
Rule sol87 1987 only - Jun 19 12:01:10s -0:01:10 -
Rule sol87 1987 only - Jun 20 12:01:20s -0:01:20 -
Rule sol87 1987 only - Jun 21 12:01:35s -0:01:35 -
Rule sol87 1987 only - Jun 22 12:01:50s -0:01:50 -
Rule sol87 1987 only - Jun 23 12:02:00s -0:02:00 -
Rule sol87 1987 only - Jun 24 12:02:15s -0:02:15 -
Rule sol87 1987 only - Jun 25 12:02:25s -0:02:25 -
Rule sol87 1987 only - Jun 26 12:02:40s -0:02:40 -
Rule sol87 1987 only - Jun 27 12:02:50s -0:02:50 -
Rule sol87 1987 only - Jun 28 12:03:05s -0:03:05 -
Rule sol87 1987 only - Jun 29 12:03:15s -0:03:15 -
Rule sol87 1987 only - Jun 30 12:03:30s -0:03:30 -
Rule sol87 1987 only - Jul 1 12:03:40s -0:03:40 -
Rule sol87 1987 only - Jul 2 12:03:50s -0:03:50 -
Rule sol87 1987 only - Jul 3 12:04:05s -0:04:05 -
Rule sol87 1987 only - Jul 4 12:04:15s -0:04:15 -
Rule sol87 1987 only - Jul 5 12:04:25s -0:04:25 -
Rule sol87 1987 only - Jul 6 12:04:35s -0:04:35 -
Rule sol87 1987 only - Jul 7 12:04:45s -0:04:45 -
Rule sol87 1987 only - Jul 8 12:04:55s -0:04:55 -
Rule sol87 1987 only - Jul 9 12:05:05s -0:05:05 -
Rule sol87 1987 only - Jul 10 12:05:15s -0:05:15 -
Rule sol87 1987 only - Jul 11 12:05:20s -0:05:20 -
Rule sol87 1987 only - Jul 12 12:05:30s -0:05:30 -
Rule sol87 1987 only - Jul 13 12:05:40s -0:05:40 -
Rule sol87 1987 only - Jul 14 12:05:45s -0:05:45 -
Rule sol87 1987 only - Jul 15 12:05:50s -0:05:50 -
Rule sol87 1987 only - Jul 16 12:06:00s -0:06:00 -
Rule sol87 1987 only - Jul 17 12:06:05s -0:06:05 -
Rule sol87 1987 only - Jul 18 12:06:10s -0:06:10 -
Rule sol87 1987 only - Jul 19 12:06:15s -0:06:15 -
Rule sol87 1987 only - Jul 20 12:06:15s -0:06:15 -
Rule sol87 1987 only - Jul 21 12:06:20s -0:06:20 -
Rule sol87 1987 only - Jul 22 12:06:25s -0:06:25 -
Rule sol87 1987 only - Jul 23 12:06:25s -0:06:25 -
Rule sol87 1987 only - Jul 24 12:06:25s -0:06:25 -
Rule sol87 1987 only - Jul 25 12:06:30s -0:06:30 -
Rule sol87 1987 only - Jul 26 12:06:30s -0:06:30 -
Rule sol87 1987 only - Jul 27 12:06:30s -0:06:30 -
Rule sol87 1987 only - Jul 28 12:06:30s -0:06:30 -
Rule sol87 1987 only - Jul 29 12:06:25s -0:06:25 -
Rule sol87 1987 only - Jul 30 12:06:25s -0:06:25 -
Rule sol87 1987 only - Jul 31 12:06:25s -0:06:25 -
Rule sol87 1987 only - Aug 1 12:06:20s -0:06:20 -
Rule sol87 1987 only - Aug 2 12:06:15s -0:06:15 -
Rule sol87 1987 only - Aug 3 12:06:10s -0:06:10 -
Rule sol87 1987 only - Aug 4 12:06:05s -0:06:05 -
Rule sol87 1987 only - Aug 5 12:06:00s -0:06:00 -
Rule sol87 1987 only - Aug 6 12:05:55s -0:05:55 -
Rule sol87 1987 only - Aug 7 12:05:50s -0:05:50 -
Rule sol87 1987 only - Aug 8 12:05:40s -0:05:40 -
Rule sol87 1987 only - Aug 9 12:05:35s -0:05:35 -
Rule sol87 1987 only - Aug 10 12:05:25s -0:05:25 -
Rule sol87 1987 only - Aug 11 12:05:15s -0:05:15 -
Rule sol87 1987 only - Aug 12 12:05:05s -0:05:05 -
Rule sol87 1987 only - Aug 13 12:04:55s -0:04:55 -
Rule sol87 1987 only - Aug 14 12:04:45s -0:04:45 -
Rule sol87 1987 only - Aug 15 12:04:35s -0:04:35 -
Rule sol87 1987 only - Aug 16 12:04:25s -0:04:25 -
Rule sol87 1987 only - Aug 17 12:04:10s -0:04:10 -
Rule sol87 1987 only - Aug 18 12:04:00s -0:04:00 -
Rule sol87 1987 only - Aug 19 12:03:45s -0:03:45 -
Rule sol87 1987 only - Aug 20 12:03:30s -0:03:30 -
Rule sol87 1987 only - Aug 21 12:03:15s -0:03:15 -
Rule sol87 1987 only - Aug 22 12:03:00s -0:03:00 -
Rule sol87 1987 only - Aug 23 12:02:45s -0:02:45 -
Rule sol87 1987 only - Aug 24 12:02:30s -0:02:30 -
Rule sol87 1987 only - Aug 25 12:02:15s -0:02:15 -
Rule sol87 1987 only - Aug 26 12:02:00s -0:02:00 -
Rule sol87 1987 only - Aug 27 12:01:40s -0:01:40 -
Rule sol87 1987 only - Aug 28 12:01:25s -0:01:25 -
Rule sol87 1987 only - Aug 29 12:01:05s -0:01:05 -
Rule sol87 1987 only - Aug 30 12:00:50s -0:00:50 -
Rule sol87 1987 only - Aug 31 12:00:30s -0:00:30 -
Rule sol87 1987 only - Sep 1 12:00:10s -0:00:10 -
Rule sol87 1987 only - Sep 2 11:59:50s 0:00:10 -
Rule sol87 1987 only - Sep 3 11:59:35s 0:00:25 -
Rule sol87 1987 only - Sep 4 11:59:15s 0:00:45 -
Rule sol87 1987 only - Sep 5 11:58:55s 0:01:05 -
Rule sol87 1987 only - Sep 6 11:58:35s 0:01:25 -
Rule sol87 1987 only - Sep 7 11:58:15s 0:01:45 -
Rule sol87 1987 only - Sep 8 11:57:55s 0:02:05 -
Rule sol87 1987 only - Sep 9 11:57:30s 0:02:30 -
Rule sol87 1987 only - Sep 10 11:57:10s 0:02:50 -
Rule sol87 1987 only - Sep 11 11:56:50s 0:03:10 -
Rule sol87 1987 only - Sep 12 11:56:30s 0:03:30 -
Rule sol87 1987 only - Sep 13 11:56:10s 0:03:50 -
Rule sol87 1987 only - Sep 14 11:55:45s 0:04:15 -
Rule sol87 1987 only - Sep 15 11:55:25s 0:04:35 -
Rule sol87 1987 only - Sep 16 11:55:05s 0:04:55 -
Rule sol87 1987 only - Sep 17 11:54:45s 0:05:15 -
Rule sol87 1987 only - Sep 18 11:54:20s 0:05:40 -
Rule sol87 1987 only - Sep 19 11:54:00s 0:06:00 -
Rule sol87 1987 only - Sep 20 11:53:40s 0:06:20 -
Rule sol87 1987 only - Sep 21 11:53:15s 0:06:45 -
Rule sol87 1987 only - Sep 22 11:52:55s 0:07:05 -
Rule sol87 1987 only - Sep 23 11:52:35s 0:07:25 -
Rule sol87 1987 only - Sep 24 11:52:15s 0:07:45 -
Rule sol87 1987 only - Sep 25 11:51:55s 0:08:05 -
Rule sol87 1987 only - Sep 26 11:51:35s 0:08:25 -
Rule sol87 1987 only - Sep 27 11:51:10s 0:08:50 -
Rule sol87 1987 only - Sep 28 11:50:50s 0:09:10 -
Rule sol87 1987 only - Sep 29 11:50:30s 0:09:30 -
Rule sol87 1987 only - Sep 30 11:50:10s 0:09:50 -
Rule sol87 1987 only - Oct 1 11:49:50s 0:10:10 -
Rule sol87 1987 only - Oct 2 11:49:35s 0:10:25 -
Rule sol87 1987 only - Oct 3 11:49:15s 0:10:45 -
Rule sol87 1987 only - Oct 4 11:48:55s 0:11:05 -
Rule sol87 1987 only - Oct 5 11:48:35s 0:11:25 -
Rule sol87 1987 only - Oct 6 11:48:20s 0:11:40 -
Rule sol87 1987 only - Oct 7 11:48:00s 0:12:00 -
Rule sol87 1987 only - Oct 8 11:47:45s 0:12:15 -
Rule sol87 1987 only - Oct 9 11:47:25s 0:12:35 -
Rule sol87 1987 only - Oct 10 11:47:10s 0:12:50 -
Rule sol87 1987 only - Oct 11 11:46:55s 0:13:05 -
Rule sol87 1987 only - Oct 12 11:46:40s 0:13:20 -
Rule sol87 1987 only - Oct 13 11:46:25s 0:13:35 -
Rule sol87 1987 only - Oct 14 11:46:10s 0:13:50 -
Rule sol87 1987 only - Oct 15 11:45:55s 0:14:05 -
Rule sol87 1987 only - Oct 16 11:45:45s 0:14:15 -
Rule sol87 1987 only - Oct 17 11:45:30s 0:14:30 -
Rule sol87 1987 only - Oct 18 11:45:20s 0:14:40 -
Rule sol87 1987 only - Oct 19 11:45:05s 0:14:55 -
Rule sol87 1987 only - Oct 20 11:44:55s 0:15:05 -
Rule sol87 1987 only - Oct 21 11:44:45s 0:15:15 -
Rule sol87 1987 only - Oct 22 11:44:35s 0:15:25 -
Rule sol87 1987 only - Oct 23 11:44:25s 0:15:35 -
Rule sol87 1987 only - Oct 24 11:44:20s 0:15:40 -
Rule sol87 1987 only - Oct 25 11:44:10s 0:15:50 -
Rule sol87 1987 only - Oct 26 11:44:05s 0:15:55 -
Rule sol87 1987 only - Oct 27 11:43:55s 0:16:05 -
Rule sol87 1987 only - Oct 28 11:43:50s 0:16:10 -
Rule sol87 1987 only - Oct 29 11:43:45s 0:16:15 -
Rule sol87 1987 only - Oct 30 11:43:45s 0:16:15 -
Rule sol87 1987 only - Oct 31 11:43:40s 0:16:20 -
Rule sol87 1987 only - Nov 1 11:43:40s 0:16:20 -
Rule sol87 1987 only - Nov 2 11:43:35s 0:16:25 -
Rule sol87 1987 only - Nov 3 11:43:35s 0:16:25 -
Rule sol87 1987 only - Nov 4 11:43:35s 0:16:25 -
Rule sol87 1987 only - Nov 5 11:43:35s 0:16:25 -
Rule sol87 1987 only - Nov 6 11:43:40s 0:16:20 -
Rule sol87 1987 only - Nov 7 11:43:40s 0:16:20 -
Rule sol87 1987 only - Nov 8 11:43:45s 0:16:15 -
Rule sol87 1987 only - Nov 9 11:43:50s 0:16:10 -
Rule sol87 1987 only - Nov 10 11:43:55s 0:16:05 -
Rule sol87 1987 only - Nov 11 11:44:00s 0:16:00 -
Rule sol87 1987 only - Nov 12 11:44:05s 0:15:55 -
Rule sol87 1987 only - Nov 13 11:44:15s 0:15:45 -
Rule sol87 1987 only - Nov 14 11:44:20s 0:15:40 -
Rule sol87 1987 only - Nov 15 11:44:30s 0:15:30 -
Rule sol87 1987 only - Nov 16 11:44:40s 0:15:20 -
Rule sol87 1987 only - Nov 17 11:44:50s 0:15:10 -
Rule sol87 1987 only - Nov 18 11:45:05s 0:14:55 -
Rule sol87 1987 only - Nov 19 11:45:15s 0:14:45 -
Rule sol87 1987 only - Nov 20 11:45:30s 0:14:30 -
Rule sol87 1987 only - Nov 21 11:45:45s 0:14:15 -
Rule sol87 1987 only - Nov 22 11:46:00s 0:14:00 -
Rule sol87 1987 only - Nov 23 11:46:15s 0:13:45 -
Rule sol87 1987 only - Nov 24 11:46:30s 0:13:30 -
Rule sol87 1987 only - Nov 25 11:46:50s 0:13:10 -
Rule sol87 1987 only - Nov 26 11:47:10s 0:12:50 -
Rule sol87 1987 only - Nov 27 11:47:25s 0:12:35 -
Rule sol87 1987 only - Nov 28 11:47:45s 0:12:15 -
Rule sol87 1987 only - Nov 29 11:48:05s 0:11:55 -
Rule sol87 1987 only - Nov 30 11:48:30s 0:11:30 -
Rule sol87 1987 only - Dec 1 11:48:50s 0:11:10 -
Rule sol87 1987 only - Dec 2 11:49:10s 0:10:50 -
Rule sol87 1987 only - Dec 3 11:49:35s 0:10:25 -
Rule sol87 1987 only - Dec 4 11:50:00s 0:10:00 -
Rule sol87 1987 only - Dec 5 11:50:25s 0:09:35 -
Rule sol87 1987 only - Dec 6 11:50:50s 0:09:10 -
Rule sol87 1987 only - Dec 7 11:51:15s 0:08:45 -
Rule sol87 1987 only - Dec 8 11:51:40s 0:08:20 -
Rule sol87 1987 only - Dec 9 11:52:05s 0:07:55 -
Rule sol87 1987 only - Dec 10 11:52:30s 0:07:30 -
Rule sol87 1987 only - Dec 11 11:53:00s 0:07:00 -
Rule sol87 1987 only - Dec 12 11:53:25s 0:06:35 -
Rule sol87 1987 only - Dec 13 11:53:55s 0:06:05 -
Rule sol87 1987 only - Dec 14 11:54:25s 0:05:35 -
Rule sol87 1987 only - Dec 15 11:54:50s 0:05:10 -
Rule sol87 1987 only - Dec 16 11:55:20s 0:04:40 -
Rule sol87 1987 only - Dec 17 11:55:50s 0:04:10 -
Rule sol87 1987 only - Dec 18 11:56:20s 0:03:40 -
Rule sol87 1987 only - Dec 19 11:56:50s 0:03:10 -
Rule sol87 1987 only - Dec 20 11:57:20s 0:02:40 -
Rule sol87 1987 only - Dec 21 11:57:50s 0:02:10 -
Rule sol87 1987 only - Dec 22 11:58:20s 0:01:40 -
Rule sol87 1987 only - Dec 23 11:58:50s 0:01:10 -
Rule sol87 1987 only - Dec 24 11:59:20s 0:00:40 -
Rule sol87 1987 only - Dec 25 11:59:50s 0:00:10 -
Rule sol87 1987 only - Dec 26 12:00:20s -0:00:20 -
Rule sol87 1987 only - Dec 27 12:00:45s -0:00:45 -
Rule sol87 1987 only - Dec 28 12:01:15s -0:01:15 -
Rule sol87 1987 only - Dec 29 12:01:45s -0:01:45 -
Rule sol87 1987 only - Dec 30 12:02:15s -0:02:15 -
Rule sol87 1987 only - Dec 31 12:02:45s -0:02:45 -
# Riyadh is at about 46 degrees 46 minutes East: 3 hrs, 7 mins, 4 secs
# Before and after 1987, we'll operate on local mean solar time.
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Asia/Riyadh87 3:07:04 - ?? 1987
3:07:04 sol87 ?? 1988
3:07:04 - ??
# For backward compatibility...
Link Asia/Riyadh87 Mideast/Riyadh87
src/timezone/data/solar88 0 → 100644
View file @ 6a2b75c2
# @(#)solar88 7.3
# Apparent noon times below are for Riyadh; they're a bit off for other places.
# Times were computed using formulas in the U.S. Naval Observatory's
# Almanac for Computers 1988; the formulas "will give EqT to an accuracy of
# [plus or minus two] seconds during the current year."
#
# Rounding to the nearest five seconds results in fewer than
# 256 different "time types"--a limit that's faced because time types are
# stored on disk as unsigned chars.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule sol88 1988 only - Jan 1 12:03:15s -0:03:15 -
Rule sol88 1988 only - Jan 2 12:03:40s -0:03:40 -
Rule sol88 1988 only - Jan 3 12:04:10s -0:04:10 -
Rule sol88 1988 only - Jan 4 12:04:40s -0:04:40 -
Rule sol88 1988 only - Jan 5 12:05:05s -0:05:05 -
Rule sol88 1988 only - Jan 6 12:05:30s -0:05:30 -
Rule sol88 1988 only - Jan 7 12:06:00s -0:06:00 -
Rule sol88 1988 only - Jan 8 12:06:25s -0:06:25 -
Rule sol88 1988 only - Jan 9 12:06:50s -0:06:50 -
Rule sol88 1988 only - Jan 10 12:07:15s -0:07:15 -
Rule sol88 1988 only - Jan 11 12:07:40s -0:07:40 -
Rule sol88 1988 only - Jan 12 12:08:05s -0:08:05 -
Rule sol88 1988 only - Jan 13 12:08:25s -0:08:25 -
Rule sol88 1988 only - Jan 14 12:08:50s -0:08:50 -
Rule sol88 1988 only - Jan 15 12:09:10s -0:09:10 -
Rule sol88 1988 only - Jan 16 12:09:30s -0:09:30 -
Rule sol88 1988 only - Jan 17 12:09:50s -0:09:50 -
Rule sol88 1988 only - Jan 18 12:10:10s -0:10:10 -
Rule sol88 1988 only - Jan 19 12:10:30s -0:10:30 -
Rule sol88 1988 only - Jan 20 12:10:50s -0:10:50 -
Rule sol88 1988 only - Jan 21 12:11:05s -0:11:05 -
Rule sol88 1988 only - Jan 22 12:11:25s -0:11:25 -
Rule sol88 1988 only - Jan 23 12:11:40s -0:11:40 -
Rule sol88 1988 only - Jan 24 12:11:55s -0:11:55 -
Rule sol88 1988 only - Jan 25 12:12:10s -0:12:10 -
Rule sol88 1988 only - Jan 26 12:12:25s -0:12:25 -
Rule sol88 1988 only - Jan 27 12:12:40s -0:12:40 -
Rule sol88 1988 only - Jan 28 12:12:50s -0:12:50 -
Rule sol88 1988 only - Jan 29 12:13:00s -0:13:00 -
Rule sol88 1988 only - Jan 30 12:13:10s -0:13:10 -
Rule sol88 1988 only - Jan 31 12:13:20s -0:13:20 -
Rule sol88 1988 only - Feb 1 12:13:30s -0:13:30 -
Rule sol88 1988 only - Feb 2 12:13:40s -0:13:40 -
Rule sol88 1988 only - Feb 3 12:13:45s -0:13:45 -
Rule sol88 1988 only - Feb 4 12:13:55s -0:13:55 -
Rule sol88 1988 only - Feb 5 12:14:00s -0:14:00 -
Rule sol88 1988 only - Feb 6 12:14:05s -0:14:05 -
Rule sol88 1988 only - Feb 7 12:14:10s -0:14:10 -
Rule sol88 1988 only - Feb 8 12:14:10s -0:14:10 -
Rule sol88 1988 only - Feb 9 12:14:15s -0:14:15 -
Rule sol88 1988 only - Feb 10 12:14:15s -0:14:15 -
Rule sol88 1988 only - Feb 11 12:14:15s -0:14:15 -
Rule sol88 1988 only - Feb 12 12:14:15s -0:14:15 -
Rule sol88 1988 only - Feb 13 12:14:15s -0:14:15 -
Rule sol88 1988 only - Feb 14 12:14:15s -0:14:15 -
Rule sol88 1988 only - Feb 15 12:14:10s -0:14:10 -
Rule sol88 1988 only - Feb 16 12:14:10s -0:14:10 -
Rule sol88 1988 only - Feb 17 12:14:05s -0:14:05 -
Rule sol88 1988 only - Feb 18 12:14:00s -0:14:00 -
Rule sol88 1988 only - Feb 19 12:13:55s -0:13:55 -
Rule sol88 1988 only - Feb 20 12:13:50s -0:13:50 -
Rule sol88 1988 only - Feb 21 12:13:45s -0:13:45 -
Rule sol88 1988 only - Feb 22 12:13:40s -0:13:40 -
Rule sol88 1988 only - Feb 23 12:13:30s -0:13:30 -
Rule sol88 1988 only - Feb 24 12:13:20s -0:13:20 -
Rule sol88 1988 only - Feb 25 12:13:15s -0:13:15 -
Rule sol88 1988 only - Feb 26 12:13:05s -0:13:05 -
Rule sol88 1988 only - Feb 27 12:12:55s -0:12:55 -
Rule sol88 1988 only - Feb 28 12:12:45s -0:12:45 -
Rule sol88 1988 only - Feb 29 12:12:30s -0:12:30 -
Rule sol88 1988 only - Mar 1 12:12:20s -0:12:20 -
Rule sol88 1988 only - Mar 2 12:12:10s -0:12:10 -
Rule sol88 1988 only - Mar 3 12:11:55s -0:11:55 -
Rule sol88 1988 only - Mar 4 12:11:45s -0:11:45 -
Rule sol88 1988 only - Mar 5 12:11:30s -0:11:30 -
Rule sol88 1988 only - Mar 6 12:11:15s -0:11:15 -
Rule sol88 1988 only - Mar 7 12:11:00s -0:11:00 -
Rule sol88 1988 only - Mar 8 12:10:45s -0:10:45 -
Rule sol88 1988 only - Mar 9 12:10:30s -0:10:30 -
Rule sol88 1988 only - Mar 10 12:10:15s -0:10:15 -
Rule sol88 1988 only - Mar 11 12:10:00s -0:10:00 -
Rule sol88 1988 only - Mar 12 12:09:45s -0:09:45 -
Rule sol88 1988 only - Mar 13 12:09:30s -0:09:30 -
Rule sol88 1988 only - Mar 14 12:09:10s -0:09:10 -
Rule sol88 1988 only - Mar 15 12:08:55s -0:08:55 -
Rule sol88 1988 only - Mar 16 12:08:40s -0:08:40 -
Rule sol88 1988 only - Mar 17 12:08:20s -0:08:20 -
Rule sol88 1988 only - Mar 18 12:08:05s -0:08:05 -
Rule sol88 1988 only - Mar 19 12:07:45s -0:07:45 -
Rule sol88 1988 only - Mar 20 12:07:30s -0:07:30 -
Rule sol88 1988 only - Mar 21 12:07:10s -0:07:10 -
Rule sol88 1988 only - Mar 22 12:06:50s -0:06:50 -
Rule sol88 1988 only - Mar 23 12:06:35s -0:06:35 -
Rule sol88 1988 only - Mar 24 12:06:15s -0:06:15 -
Rule sol88 1988 only - Mar 25 12:06:00s -0:06:00 -
Rule sol88 1988 only - Mar 26 12:05:40s -0:05:40 -
Rule sol88 1988 only - Mar 27 12:05:20s -0:05:20 -
Rule sol88 1988 only - Mar 28 12:05:05s -0:05:05 -
Rule sol88 1988 only - Mar 29 12:04:45s -0:04:45 -
Rule sol88 1988 only - Mar 30 12:04:25s -0:04:25 -
Rule sol88 1988 only - Mar 31 12:04:10s -0:04:10 -
Rule sol88 1988 only - Apr 1 12:03:50s -0:03:50 -
Rule sol88 1988 only - Apr 2 12:03:35s -0:03:35 -
Rule sol88 1988 only - Apr 3 12:03:15s -0:03:15 -
Rule sol88 1988 only - Apr 4 12:03:00s -0:03:00 -
Rule sol88 1988 only - Apr 5 12:02:40s -0:02:40 -
Rule sol88 1988 only - Apr 6 12:02:25s -0:02:25 -
Rule sol88 1988 only - Apr 7 12:02:05s -0:02:05 -
Rule sol88 1988 only - Apr 8 12:01:50s -0:01:50 -
Rule sol88 1988 only - Apr 9 12:01:35s -0:01:35 -
Rule sol88 1988 only - Apr 10 12:01:15s -0:01:15 -
Rule sol88 1988 only - Apr 11 12:01:00s -0:01:00 -
Rule sol88 1988 only - Apr 12 12:00:45s -0:00:45 -
Rule sol88 1988 only - Apr 13 12:00:30s -0:00:30 -
Rule sol88 1988 only - Apr 14 12:00:15s -0:00:15 -
Rule sol88 1988 only - Apr 15 12:00:00s 0:00:00 -
Rule sol88 1988 only - Apr 16 11:59:45s 0:00:15 -
Rule sol88 1988 only - Apr 17 11:59:30s 0:00:30 -
Rule sol88 1988 only - Apr 18 11:59:20s 0:00:40 -
Rule sol88 1988 only - Apr 19 11:59:05s 0:00:55 -
Rule sol88 1988 only - Apr 20 11:58:55s 0:01:05 -
Rule sol88 1988 only - Apr 21 11:58:40s 0:01:20 -
Rule sol88 1988 only - Apr 22 11:58:30s 0:01:30 -
Rule sol88 1988 only - Apr 23 11:58:15s 0:01:45 -
Rule sol88 1988 only - Apr 24 11:58:05s 0:01:55 -
Rule sol88 1988 only - Apr 25 11:57:55s 0:02:05 -
Rule sol88 1988 only - Apr 26 11:57:45s 0:02:15 -
Rule sol88 1988 only - Apr 27 11:57:35s 0:02:25 -
Rule sol88 1988 only - Apr 28 11:57:30s 0:02:30 -
Rule sol88 1988 only - Apr 29 11:57:20s 0:02:40 -
Rule sol88 1988 only - Apr 30 11:57:10s 0:02:50 -
Rule sol88 1988 only - May 1 11:57:05s 0:02:55 -
Rule sol88 1988 only - May 2 11:56:55s 0:03:05 -
Rule sol88 1988 only - May 3 11:56:50s 0:03:10 -
Rule sol88 1988 only - May 4 11:56:45s 0:03:15 -
Rule sol88 1988 only - May 5 11:56:40s 0:03:20 -
Rule sol88 1988 only - May 6 11:56:35s 0:03:25 -
Rule sol88 1988 only - May 7 11:56:30s 0:03:30 -
Rule sol88 1988 only - May 8 11:56:25s 0:03:35 -
Rule sol88 1988 only - May 9 11:56:25s 0:03:35 -
Rule sol88 1988 only - May 10 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 11 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 12 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 13 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 14 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 15 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 16 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 17 11:56:20s 0:03:40 -
Rule sol88 1988 only - May 18 11:56:25s 0:03:35 -
Rule sol88 1988 only - May 19 11:56:25s 0:03:35 -
Rule sol88 1988 only - May 20 11:56:30s 0:03:30 -
Rule sol88 1988 only - May 21 11:56:35s 0:03:25 -
Rule sol88 1988 only - May 22 11:56:40s 0:03:20 -
Rule sol88 1988 only - May 23 11:56:45s 0:03:15 -
Rule sol88 1988 only - May 24 11:56:50s 0:03:10 -
Rule sol88 1988 only - May 25 11:56:55s 0:03:05 -
Rule sol88 1988 only - May 26 11:57:00s 0:03:00 -
Rule sol88 1988 only - May 27 11:57:05s 0:02:55 -
Rule sol88 1988 only - May 28 11:57:15s 0:02:45 -
Rule sol88 1988 only - May 29 11:57:20s 0:02:40 -
Rule sol88 1988 only - May 30 11:57:30s 0:02:30 -
Rule sol88 1988 only - May 31 11:57:40s 0:02:20 -
Rule sol88 1988 only - Jun 1 11:57:50s 0:02:10 -
Rule sol88 1988 only - Jun 2 11:57:55s 0:02:05 -
Rule sol88 1988 only - Jun 3 11:58:05s 0:01:55 -
Rule sol88 1988 only - Jun 4 11:58:15s 0:01:45 -
Rule sol88 1988 only - Jun 5 11:58:30s 0:01:30 -
Rule sol88 1988 only - Jun 6 11:58:40s 0:01:20 -
Rule sol88 1988 only - Jun 7 11:58:50s 0:01:10 -
Rule sol88 1988 only - Jun 8 11:59:00s 0:01:00 -
Rule sol88 1988 only - Jun 9 11:59:15s 0:00:45 -
Rule sol88 1988 only - Jun 10 11:59:25s 0:00:35 -
Rule sol88 1988 only - Jun 11 11:59:35s 0:00:25 -
Rule sol88 1988 only - Jun 12 11:59:50s 0:00:10 -
Rule sol88 1988 only - Jun 13 12:00:00s 0:00:00 -
Rule sol88 1988 only - Jun 14 12:00:15s -0:00:15 -
Rule sol88 1988 only - Jun 15 12:00:25s -0:00:25 -
Rule sol88 1988 only - Jun 16 12:00:40s -0:00:40 -
Rule sol88 1988 only - Jun 17 12:00:55s -0:00:55 -
Rule sol88 1988 only - Jun 18 12:01:05s -0:01:05 -
Rule sol88 1988 only - Jun 19 12:01:20s -0:01:20 -
Rule sol88 1988 only - Jun 20 12:01:30s -0:01:30 -
Rule sol88 1988 only - Jun 21 12:01:45s -0:01:45 -
Rule sol88 1988 only - Jun 22 12:02:00s -0:02:00 -
Rule sol88 1988 only - Jun 23 12:02:10s -0:02:10 -
Rule sol88 1988 only - Jun 24 12:02:25s -0:02:25 -
Rule sol88 1988 only - Jun 25 12:02:35s -0:02:35 -
Rule sol88 1988 only - Jun 26 12:02:50s -0:02:50 -
Rule sol88 1988 only - Jun 27 12:03:00s -0:03:00 -
Rule sol88 1988 only - Jun 28 12:03:15s -0:03:15 -
Rule sol88 1988 only - Jun 29 12:03:25s -0:03:25 -
Rule sol88 1988 only - Jun 30 12:03:40s -0:03:40 -
Rule sol88 1988 only - Jul 1 12:03:50s -0:03:50 -
Rule sol88 1988 only - Jul 2 12:04:00s -0:04:00 -
Rule sol88 1988 only - Jul 3 12:04:10s -0:04:10 -
Rule sol88 1988 only - Jul 4 12:04:25s -0:04:25 -
Rule sol88 1988 only - Jul 5 12:04:35s -0:04:35 -
Rule sol88 1988 only - Jul 6 12:04:45s -0:04:45 -
Rule sol88 1988 only - Jul 7 12:04:55s -0:04:55 -
Rule sol88 1988 only - Jul 8 12:05:05s -0:05:05 -
Rule sol88 1988 only - Jul 9 12:05:10s -0:05:10 -
Rule sol88 1988 only - Jul 10 12:05:20s -0:05:20 -
Rule sol88 1988 only - Jul 11 12:05:30s -0:05:30 -
Rule sol88 1988 only - Jul 12 12:05:35s -0:05:35 -
Rule sol88 1988 only - Jul 13 12:05:45s -0:05:45 -
Rule sol88 1988 only - Jul 14 12:05:50s -0:05:50 -
Rule sol88 1988 only - Jul 15 12:05:55s -0:05:55 -
Rule sol88 1988 only - Jul 16 12:06:00s -0:06:00 -
Rule sol88 1988 only - Jul 17 12:06:05s -0:06:05 -
Rule sol88 1988 only - Jul 18 12:06:10s -0:06:10 -
Rule sol88 1988 only - Jul 19 12:06:15s -0:06:15 -
Rule sol88 1988 only - Jul 20 12:06:20s -0:06:20 -
Rule sol88 1988 only - Jul 21 12:06:25s -0:06:25 -
Rule sol88 1988 only - Jul 22 12:06:25s -0:06:25 -
Rule sol88 1988 only - Jul 23 12:06:25s -0:06:25 -
Rule sol88 1988 only - Jul 24 12:06:30s -0:06:30 -
Rule sol88 1988 only - Jul 25 12:06:30s -0:06:30 -
Rule sol88 1988 only - Jul 26 12:06:30s -0:06:30 -
Rule sol88 1988 only - Jul 27 12:06:30s -0:06:30 -
Rule sol88 1988 only - Jul 28 12:06:30s -0:06:30 -
Rule sol88 1988 only - Jul 29 12:06:25s -0:06:25 -
Rule sol88 1988 only - Jul 30 12:06:25s -0:06:25 -
Rule sol88 1988 only - Jul 31 12:06:20s -0:06:20 -
Rule sol88 1988 only - Aug 1 12:06:15s -0:06:15 -
Rule sol88 1988 only - Aug 2 12:06:15s -0:06:15 -
Rule sol88 1988 only - Aug 3 12:06:10s -0:06:10 -
Rule sol88 1988 only - Aug 4 12:06:05s -0:06:05 -
Rule sol88 1988 only - Aug 5 12:05:55s -0:05:55 -
Rule sol88 1988 only - Aug 6 12:05:50s -0:05:50 -
Rule sol88 1988 only - Aug 7 12:05:45s -0:05:45 -
Rule sol88 1988 only - Aug 8 12:05:35s -0:05:35 -
Rule sol88 1988 only - Aug 9 12:05:25s -0:05:25 -
Rule sol88 1988 only - Aug 10 12:05:20s -0:05:20 -
Rule sol88 1988 only - Aug 11 12:05:10s -0:05:10 -
Rule sol88 1988 only - Aug 12 12:05:00s -0:05:00 -
Rule sol88 1988 only - Aug 13 12:04:50s -0:04:50 -
Rule sol88 1988 only - Aug 14 12:04:35s -0:04:35 -
Rule sol88 1988 only - Aug 15 12:04:25s -0:04:25 -
Rule sol88 1988 only - Aug 16 12:04:15s -0:04:15 -
Rule sol88 1988 only - Aug 17 12:04:00s -0:04:00 -
Rule sol88 1988 only - Aug 18 12:03:50s -0:03:50 -
Rule sol88 1988 only - Aug 19 12:03:35s -0:03:35 -
Rule sol88 1988 only - Aug 20 12:03:20s -0:03:20 -
Rule sol88 1988 only - Aug 21 12:03:05s -0:03:05 -
Rule sol88 1988 only - Aug 22 12:02:50s -0:02:50 -
Rule sol88 1988 only - Aug 23 12:02:35s -0:02:35 -
Rule sol88 1988 only - Aug 24 12:02:20s -0:02:20 -
Rule sol88 1988 only - Aug 25 12:02:00s -0:02:00 -
Rule sol88 1988 only - Aug 26 12:01:45s -0:01:45 -
Rule sol88 1988 only - Aug 27 12:01:30s -0:01:30 -
Rule sol88 1988 only - Aug 28 12:01:10s -0:01:10 -
Rule sol88 1988 only - Aug 29 12:00:50s -0:00:50 -
Rule sol88 1988 only - Aug 30 12:00:35s -0:00:35 -
Rule sol88 1988 only - Aug 31 12:00:15s -0:00:15 -
Rule sol88 1988 only - Sep 1 11:59:55s 0:00:05 -
Rule sol88 1988 only - Sep 2 11:59:35s 0:00:25 -
Rule sol88 1988 only - Sep 3 11:59:20s 0:00:40 -
Rule sol88 1988 only - Sep 4 11:59:00s 0:01:00 -
Rule sol88 1988 only - Sep 5 11:58:40s 0:01:20 -
Rule sol88 1988 only - Sep 6 11:58:20s 0:01:40 -
Rule sol88 1988 only - Sep 7 11:58:00s 0:02:00 -
Rule sol88 1988 only - Sep 8 11:57:35s 0:02:25 -
Rule sol88 1988 only - Sep 9 11:57:15s 0:02:45 -
Rule sol88 1988 only - Sep 10 11:56:55s 0:03:05 -
Rule sol88 1988 only - Sep 11 11:56:35s 0:03:25 -
Rule sol88 1988 only - Sep 12 11:56:15s 0:03:45 -
Rule sol88 1988 only - Sep 13 11:55:50s 0:04:10 -
Rule sol88 1988 only - Sep 14 11:55:30s 0:04:30 -
Rule sol88 1988 only - Sep 15 11:55:10s 0:04:50 -
Rule sol88 1988 only - Sep 16 11:54:50s 0:05:10 -
Rule sol88 1988 only - Sep 17 11:54:25s 0:05:35 -
Rule sol88 1988 only - Sep 18 11:54:05s 0:05:55 -
Rule sol88 1988 only - Sep 19 11:53:45s 0:06:15 -
Rule sol88 1988 only - Sep 20 11:53:25s 0:06:35 -
Rule sol88 1988 only - Sep 21 11:53:00s 0:07:00 -
Rule sol88 1988 only - Sep 22 11:52:40s 0:07:20 -
Rule sol88 1988 only - Sep 23 11:52:20s 0:07:40 -
Rule sol88 1988 only - Sep 24 11:52:00s 0:08:00 -
Rule sol88 1988 only - Sep 25 11:51:40s 0:08:20 -
Rule sol88 1988 only - Sep 26 11:51:15s 0:08:45 -
Rule sol88 1988 only - Sep 27 11:50:55s 0:09:05 -
Rule sol88 1988 only - Sep 28 11:50:35s 0:09:25 -
Rule sol88 1988 only - Sep 29 11:50:15s 0:09:45 -
Rule sol88 1988 only - Sep 30 11:49:55s 0:10:05 -
Rule sol88 1988 only - Oct 1 11:49:35s 0:10:25 -
Rule sol88 1988 only - Oct 2 11:49:20s 0:10:40 -
Rule sol88 1988 only - Oct 3 11:49:00s 0:11:00 -
Rule sol88 1988 only - Oct 4 11:48:40s 0:11:20 -
Rule sol88 1988 only - Oct 5 11:48:25s 0:11:35 -
Rule sol88 1988 only - Oct 6 11:48:05s 0:11:55 -
Rule sol88 1988 only - Oct 7 11:47:50s 0:12:10 -
Rule sol88 1988 only - Oct 8 11:47:30s 0:12:30 -
Rule sol88 1988 only - Oct 9 11:47:15s 0:12:45 -
Rule sol88 1988 only - Oct 10 11:47:00s 0:13:00 -
Rule sol88 1988 only - Oct 11 11:46:45s 0:13:15 -
Rule sol88 1988 only - Oct 12 11:46:30s 0:13:30 -
Rule sol88 1988 only - Oct 13 11:46:15s 0:13:45 -
Rule sol88 1988 only - Oct 14 11:46:00s 0:14:00 -
Rule sol88 1988 only - Oct 15 11:45:45s 0:14:15 -
Rule sol88 1988 only - Oct 16 11:45:35s 0:14:25 -
Rule sol88 1988 only - Oct 17 11:45:20s 0:14:40 -
Rule sol88 1988 only - Oct 18 11:45:10s 0:14:50 -
Rule sol88 1988 only - Oct 19 11:45:00s 0:15:00 -
Rule sol88 1988 only - Oct 20 11:44:45s 0:15:15 -
Rule sol88 1988 only - Oct 21 11:44:40s 0:15:20 -
Rule sol88 1988 only - Oct 22 11:44:30s 0:15:30 -
Rule sol88 1988 only - Oct 23 11:44:20s 0:15:40 -
Rule sol88 1988 only - Oct 24 11:44:10s 0:15:50 -
Rule sol88 1988 only - Oct 25 11:44:05s 0:15:55 -
Rule sol88 1988 only - Oct 26 11:44:00s 0:16:00 -
Rule sol88 1988 only - Oct 27 11:43:55s 0:16:05 -
Rule sol88 1988 only - Oct 28 11:43:50s 0:16:10 -
Rule sol88 1988 only - Oct 29 11:43:45s 0:16:15 -
Rule sol88 1988 only - Oct 30 11:43:40s 0:16:20 -
Rule sol88 1988 only - Oct 31 11:43:40s 0:16:20 -
Rule sol88 1988 only - Nov 1 11:43:35s 0:16:25 -
Rule sol88 1988 only - Nov 2 11:43:35s 0:16:25 -
Rule sol88 1988 only - Nov 3 11:43:35s 0:16:25 -
Rule sol88 1988 only - Nov 4 11:43:35s 0:16:25 -
Rule sol88 1988 only - Nov 5 11:43:40s 0:16:20 -
Rule sol88 1988 only - Nov 6 11:43:40s 0:16:20 -
Rule sol88 1988 only - Nov 7 11:43:45s 0:16:15 -
Rule sol88 1988 only - Nov 8 11:43:45s 0:16:15 -
Rule sol88 1988 only - Nov 9 11:43:50s 0:16:10 -
Rule sol88 1988 only - Nov 10 11:44:00s 0:16:00 -
Rule sol88 1988 only - Nov 11 11:44:05s 0:15:55 -
Rule sol88 1988 only - Nov 12 11:44:10s 0:15:50 -
Rule sol88 1988 only - Nov 13 11:44:20s 0:15:40 -
Rule sol88 1988 only - Nov 14 11:44:30s 0:15:30 -
Rule sol88 1988 only - Nov 15 11:44:40s 0:15:20 -
Rule sol88 1988 only - Nov 16 11:44:50s 0:15:10 -
Rule sol88 1988 only - Nov 17 11:45:00s 0:15:00 -
Rule sol88 1988 only - Nov 18 11:45:15s 0:14:45 -
Rule sol88 1988 only - Nov 19 11:45:25s 0:14:35 -
Rule sol88 1988 only - Nov 20 11:45:40s 0:14:20 -
Rule sol88 1988 only - Nov 21 11:45:55s 0:14:05 -
Rule sol88 1988 only - Nov 22 11:46:10s 0:13:50 -
Rule sol88 1988 only - Nov 23 11:46:30s 0:13:30 -
Rule sol88 1988 only - Nov 24 11:46:45s 0:13:15 -
Rule sol88 1988 only - Nov 25 11:47:05s 0:12:55 -
Rule sol88 1988 only - Nov 26 11:47:20s 0:12:40 -
Rule sol88 1988 only - Nov 27 11:47:40s 0:12:20 -
Rule sol88 1988 only - Nov 28 11:48:00s 0:12:00 -
Rule sol88 1988 only - Nov 29 11:48:25s 0:11:35 -
Rule sol88 1988 only - Nov 30 11:48:45s 0:11:15 -
Rule sol88 1988 only - Dec 1 11:49:05s 0:10:55 -
Rule sol88 1988 only - Dec 2 11:49:30s 0:10:30 -
Rule sol88 1988 only - Dec 3 11:49:55s 0:10:05 -
Rule sol88 1988 only - Dec 4 11:50:15s 0:09:45 -
Rule sol88 1988 only - Dec 5 11:50:40s 0:09:20 -
Rule sol88 1988 only - Dec 6 11:51:05s 0:08:55 -
Rule sol88 1988 only - Dec 7 11:51:35s 0:08:25 -
Rule sol88 1988 only - Dec 8 11:52:00s 0:08:00 -
Rule sol88 1988 only - Dec 9 11:52:25s 0:07:35 -
Rule sol88 1988 only - Dec 10 11:52:55s 0:07:05 -
Rule sol88 1988 only - Dec 11 11:53:20s 0:06:40 -
Rule sol88 1988 only - Dec 12 11:53:50s 0:06:10 -
Rule sol88 1988 only - Dec 13 11:54:15s 0:05:45 -
Rule sol88 1988 only - Dec 14 11:54:45s 0:05:15 -
Rule sol88 1988 only - Dec 15 11:55:15s 0:04:45 -
Rule sol88 1988 only - Dec 16 11:55:45s 0:04:15 -
Rule sol88 1988 only - Dec 17 11:56:15s 0:03:45 -
Rule sol88 1988 only - Dec 18 11:56:40s 0:03:20 -
Rule sol88 1988 only - Dec 19 11:57:10s 0:02:50 -
Rule sol88 1988 only - Dec 20 11:57:40s 0:02:20 -
Rule sol88 1988 only - Dec 21 11:58:10s 0:01:50 -
Rule sol88 1988 only - Dec 22 11:58:40s 0:01:20 -
Rule sol88 1988 only - Dec 23 11:59:10s 0:00:50 -
Rule sol88 1988 only - Dec 24 11:59:40s 0:00:20 -
Rule sol88 1988 only - Dec 25 12:00:10s -0:00:10 -
Rule sol88 1988 only - Dec 26 12:00:40s -0:00:40 -
Rule sol88 1988 only - Dec 27 12:01:10s -0:01:10 -
Rule sol88 1988 only - Dec 28 12:01:40s -0:01:40 -
Rule sol88 1988 only - Dec 29 12:02:10s -0:02:10 -
Rule sol88 1988 only - Dec 30 12:02:35s -0:02:35 -
Rule sol88 1988 only - Dec 31 12:03:05s -0:03:05 -
# Riyadh is at about 46 degrees 46 minutes East: 3 hrs, 7 mins, 4 secs
# Before and after 1988, we'll operate on local mean solar time.
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Asia/Riyadh88 3:07:04 - ?? 1988
3:07:04 sol88 ?? 1989
3:07:04 - ??
# For backward compatibility...
Link Asia/Riyadh88 Mideast/Riyadh88
src/timezone/data/solar89 0 → 100644
View file @ 6a2b75c2
# @(#)solar89 7.4
# Apparent noon times below are for Riyadh; they're a bit off for other places.
# Times were computed using a formula provided by the U. S. Naval Observatory:
# eqt = -105.8 * sin(l) + 596.2 * sin(2 * l) + 4.4 * sin(3 * l)
# -12.7 * sin(4 * l) - 429.0 * cos(l) - 2.1 * cos (2 * l)
# + 19.3 * cos(3 * l);
# where l is the "mean longitude of the Sun" given by
# l = 279.642 degrees + 0.985647 * d
# and d is the interval in days from January 0, 0 hours Universal Time
# (equaling the day of the year plus the fraction of a day from zero hours).
# The accuracy of the formula is plus or minus three seconds.
#
# Rounding to the nearest five seconds results in fewer than
# 256 different "time types"--a limit that's faced because time types are
# stored on disk as unsigned chars.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule sol89 1989 only - Jan 1 12:03:35s -0:03:35 -
Rule sol89 1989 only - Jan 2 12:04:05s -0:04:05 -
Rule sol89 1989 only - Jan 3 12:04:30s -0:04:30 -
Rule sol89 1989 only - Jan 4 12:05:00s -0:05:00 -
Rule sol89 1989 only - Jan 5 12:05:25s -0:05:25 -
Rule sol89 1989 only - Jan 6 12:05:50s -0:05:50 -
Rule sol89 1989 only - Jan 7 12:06:15s -0:06:15 -
Rule sol89 1989 only - Jan 8 12:06:45s -0:06:45 -
Rule sol89 1989 only - Jan 9 12:07:10s -0:07:10 -
Rule sol89 1989 only - Jan 10 12:07:35s -0:07:35 -
Rule sol89 1989 only - Jan 11 12:07:55s -0:07:55 -
Rule sol89 1989 only - Jan 12 12:08:20s -0:08:20 -
Rule sol89 1989 only - Jan 13 12:08:45s -0:08:45 -
Rule sol89 1989 only - Jan 14 12:09:05s -0:09:05 -
Rule sol89 1989 only - Jan 15 12:09:25s -0:09:25 -
Rule sol89 1989 only - Jan 16 12:09:45s -0:09:45 -
Rule sol89 1989 only - Jan 17 12:10:05s -0:10:05 -
Rule sol89 1989 only - Jan 18 12:10:25s -0:10:25 -
Rule sol89 1989 only - Jan 19 12:10:45s -0:10:45 -
Rule sol89 1989 only - Jan 20 12:11:05s -0:11:05 -
Rule sol89 1989 only - Jan 21 12:11:20s -0:11:20 -
Rule sol89 1989 only - Jan 22 12:11:35s -0:11:35 -
Rule sol89 1989 only - Jan 23 12:11:55s -0:11:55 -
Rule sol89 1989 only - Jan 24 12:12:10s -0:12:10 -
Rule sol89 1989 only - Jan 25 12:12:20s -0:12:20 -
Rule sol89 1989 only - Jan 26 12:12:35s -0:12:35 -
Rule sol89 1989 only - Jan 27 12:12:50s -0:12:50 -
Rule sol89 1989 only - Jan 28 12:13:00s -0:13:00 -
Rule sol89 1989 only - Jan 29 12:13:10s -0:13:10 -
Rule sol89 1989 only - Jan 30 12:13:20s -0:13:20 -
Rule sol89 1989 only - Jan 31 12:13:30s -0:13:30 -
Rule sol89 1989 only - Feb 1 12:13:40s -0:13:40 -
Rule sol89 1989 only - Feb 2 12:13:45s -0:13:45 -
Rule sol89 1989 only - Feb 3 12:13:55s -0:13:55 -
Rule sol89 1989 only - Feb 4 12:14:00s -0:14:00 -
Rule sol89 1989 only - Feb 5 12:14:05s -0:14:05 -
Rule sol89 1989 only - Feb 6 12:14:10s -0:14:10 -
Rule sol89 1989 only - Feb 7 12:14:10s -0:14:10 -
Rule sol89 1989 only - Feb 8 12:14:15s -0:14:15 -
Rule sol89 1989 only - Feb 9 12:14:15s -0:14:15 -
Rule sol89 1989 only - Feb 10 12:14:20s -0:14:20 -
Rule sol89 1989 only - Feb 11 12:14:20s -0:14:20 -
Rule sol89 1989 only - Feb 12 12:14:20s -0:14:20 -
Rule sol89 1989 only - Feb 13 12:14:15s -0:14:15 -
Rule sol89 1989 only - Feb 14 12:14:15s -0:14:15 -
Rule sol89 1989 only - Feb 15 12:14:10s -0:14:10 -
Rule sol89 1989 only - Feb 16 12:14:10s -0:14:10 -
Rule sol89 1989 only - Feb 17 12:14:05s -0:14:05 -
Rule sol89 1989 only - Feb 18 12:14:00s -0:14:00 -
Rule sol89 1989 only - Feb 19 12:13:55s -0:13:55 -
Rule sol89 1989 only - Feb 20 12:13:50s -0:13:50 -
Rule sol89 1989 only - Feb 21 12:13:40s -0:13:40 -
Rule sol89 1989 only - Feb 22 12:13:35s -0:13:35 -
Rule sol89 1989 only - Feb 23 12:13:25s -0:13:25 -
Rule sol89 1989 only - Feb 24 12:13:15s -0:13:15 -
Rule sol89 1989 only - Feb 25 12:13:05s -0:13:05 -
Rule sol89 1989 only - Feb 26 12:12:55s -0:12:55 -
Rule sol89 1989 only - Feb 27 12:12:45s -0:12:45 -
Rule sol89 1989 only - Feb 28 12:12:35s -0:12:35 -
Rule sol89 1989 only - Mar 1 12:12:25s -0:12:25 -
Rule sol89 1989 only - Mar 2 12:12:10s -0:12:10 -
Rule sol89 1989 only - Mar 3 12:12:00s -0:12:00 -
Rule sol89 1989 only - Mar 4 12:11:45s -0:11:45 -
Rule sol89 1989 only - Mar 5 12:11:35s -0:11:35 -
Rule sol89 1989 only - Mar 6 12:11:20s -0:11:20 -
Rule sol89 1989 only - Mar 7 12:11:05s -0:11:05 -
Rule sol89 1989 only - Mar 8 12:10:50s -0:10:50 -
Rule sol89 1989 only - Mar 9 12:10:35s -0:10:35 -
Rule sol89 1989 only - Mar 10 12:10:20s -0:10:20 -
Rule sol89 1989 only - Mar 11 12:10:05s -0:10:05 -
Rule sol89 1989 only - Mar 12 12:09:50s -0:09:50 -
Rule sol89 1989 only - Mar 13 12:09:30s -0:09:30 -
Rule sol89 1989 only - Mar 14 12:09:15s -0:09:15 -
Rule sol89 1989 only - Mar 15 12:09:00s -0:09:00 -
Rule sol89 1989 only - Mar 16 12:08:40s -0:08:40 -
Rule sol89 1989 only - Mar 17 12:08:25s -0:08:25 -
Rule sol89 1989 only - Mar 18 12:08:05s -0:08:05 -
Rule sol89 1989 only - Mar 19 12:07:50s -0:07:50 -
Rule sol89 1989 only - Mar 20 12:07:30s -0:07:30 -
Rule sol89 1989 only - Mar 21 12:07:15s -0:07:15 -
Rule sol89 1989 only - Mar 22 12:06:55s -0:06:55 -
Rule sol89 1989 only - Mar 23 12:06:35s -0:06:35 -
Rule sol89 1989 only - Mar 24 12:06:20s -0:06:20 -
Rule sol89 1989 only - Mar 25 12:06:00s -0:06:00 -
Rule sol89 1989 only - Mar 26 12:05:40s -0:05:40 -
Rule sol89 1989 only - Mar 27 12:05:25s -0:05:25 -
Rule sol89 1989 only - Mar 28 12:05:05s -0:05:05 -
Rule sol89 1989 only - Mar 29 12:04:50s -0:04:50 -
Rule sol89 1989 only - Mar 30 12:04:30s -0:04:30 -
Rule sol89 1989 only - Mar 31 12:04:10s -0:04:10 -
Rule sol89 1989 only - Apr 1 12:03:55s -0:03:55 -
Rule sol89 1989 only - Apr 2 12:03:35s -0:03:35 -
Rule sol89 1989 only - Apr 3 12:03:20s -0:03:20 -
Rule sol89 1989 only - Apr 4 12:03:00s -0:03:00 -
Rule sol89 1989 only - Apr 5 12:02:45s -0:02:45 -
Rule sol89 1989 only - Apr 6 12:02:25s -0:02:25 -
Rule sol89 1989 only - Apr 7 12:02:10s -0:02:10 -
Rule sol89 1989 only - Apr 8 12:01:50s -0:01:50 -
Rule sol89 1989 only - Apr 9 12:01:35s -0:01:35 -
Rule sol89 1989 only - Apr 10 12:01:20s -0:01:20 -
Rule sol89 1989 only - Apr 11 12:01:05s -0:01:05 -
Rule sol89 1989 only - Apr 12 12:00:50s -0:00:50 -
Rule sol89 1989 only - Apr 13 12:00:35s -0:00:35 -
Rule sol89 1989 only - Apr 14 12:00:20s -0:00:20 -
Rule sol89 1989 only - Apr 15 12:00:05s -0:00:05 -
Rule sol89 1989 only - Apr 16 11:59:50s 0:00:10 -
Rule sol89 1989 only - Apr 17 11:59:35s 0:00:25 -
Rule sol89 1989 only - Apr 18 11:59:20s 0:00:40 -
Rule sol89 1989 only - Apr 19 11:59:10s 0:00:50 -
Rule sol89 1989 only - Apr 20 11:58:55s 0:01:05 -
Rule sol89 1989 only - Apr 21 11:58:45s 0:01:15 -
Rule sol89 1989 only - Apr 22 11:58:30s 0:01:30 -
Rule sol89 1989 only - Apr 23 11:58:20s 0:01:40 -
Rule sol89 1989 only - Apr 24 11:58:10s 0:01:50 -
Rule sol89 1989 only - Apr 25 11:58:00s 0:02:00 -
Rule sol89 1989 only - Apr 26 11:57:50s 0:02:10 -
Rule sol89 1989 only - Apr 27 11:57:40s 0:02:20 -
Rule sol89 1989 only - Apr 28 11:57:30s 0:02:30 -
Rule sol89 1989 only - Apr 29 11:57:20s 0:02:40 -
Rule sol89 1989 only - Apr 30 11:57:15s 0:02:45 -
Rule sol89 1989 only - May 1 11:57:05s 0:02:55 -
Rule sol89 1989 only - May 2 11:57:00s 0:03:00 -
Rule sol89 1989 only - May 3 11:56:50s 0:03:10 -
Rule sol89 1989 only - May 4 11:56:45s 0:03:15 -
Rule sol89 1989 only - May 5 11:56:40s 0:03:20 -
Rule sol89 1989 only - May 6 11:56:35s 0:03:25 -
Rule sol89 1989 only - May 7 11:56:30s 0:03:30 -
Rule sol89 1989 only - May 8 11:56:30s 0:03:30 -
Rule sol89 1989 only - May 9 11:56:25s 0:03:35 -
Rule sol89 1989 only - May 10 11:56:25s 0:03:35 -
Rule sol89 1989 only - May 11 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 12 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 13 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 14 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 15 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 16 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 17 11:56:20s 0:03:40 -
Rule sol89 1989 only - May 18 11:56:25s 0:03:35 -
Rule sol89 1989 only - May 19 11:56:25s 0:03:35 -
Rule sol89 1989 only - May 20 11:56:30s 0:03:30 -
Rule sol89 1989 only - May 21 11:56:35s 0:03:25 -
Rule sol89 1989 only - May 22 11:56:35s 0:03:25 -
Rule sol89 1989 only - May 23 11:56:40s 0:03:20 -
Rule sol89 1989 only - May 24 11:56:45s 0:03:15 -
Rule sol89 1989 only - May 25 11:56:55s 0:03:05 -
Rule sol89 1989 only - May 26 11:57:00s 0:03:00 -
Rule sol89 1989 only - May 27 11:57:05s 0:02:55 -
Rule sol89 1989 only - May 28 11:57:15s 0:02:45 -
Rule sol89 1989 only - May 29 11:57:20s 0:02:40 -
Rule sol89 1989 only - May 30 11:57:30s 0:02:30 -
Rule sol89 1989 only - May 31 11:57:35s 0:02:25 -
Rule sol89 1989 only - Jun 1 11:57:45s 0:02:15 -
Rule sol89 1989 only - Jun 2 11:57:55s 0:02:05 -
Rule sol89 1989 only - Jun 3 11:58:05s 0:01:55 -
Rule sol89 1989 only - Jun 4 11:58:15s 0:01:45 -
Rule sol89 1989 only - Jun 5 11:58:25s 0:01:35 -
Rule sol89 1989 only - Jun 6 11:58:35s 0:01:25 -
Rule sol89 1989 only - Jun 7 11:58:45s 0:01:15 -
Rule sol89 1989 only - Jun 8 11:59:00s 0:01:00 -
Rule sol89 1989 only - Jun 9 11:59:10s 0:00:50 -
Rule sol89 1989 only - Jun 10 11:59:20s 0:00:40 -
Rule sol89 1989 only - Jun 11 11:59:35s 0:00:25 -
Rule sol89 1989 only - Jun 12 11:59:45s 0:00:15 -
Rule sol89 1989 only - Jun 13 12:00:00s 0:00:00 -
Rule sol89 1989 only - Jun 14 12:00:10s -0:00:10 -
Rule sol89 1989 only - Jun 15 12:00:25s -0:00:25 -
Rule sol89 1989 only - Jun 16 12:00:35s -0:00:35 -
Rule sol89 1989 only - Jun 17 12:00:50s -0:00:50 -
Rule sol89 1989 only - Jun 18 12:01:05s -0:01:05 -
Rule sol89 1989 only - Jun 19 12:01:15s -0:01:15 -
Rule sol89 1989 only - Jun 20 12:01:30s -0:01:30 -
Rule sol89 1989 only - Jun 21 12:01:40s -0:01:40 -
Rule sol89 1989 only - Jun 22 12:01:55s -0:01:55 -
Rule sol89 1989 only - Jun 23 12:02:10s -0:02:10 -
Rule sol89 1989 only - Jun 24 12:02:20s -0:02:20 -
Rule sol89 1989 only - Jun 25 12:02:35s -0:02:35 -
Rule sol89 1989 only - Jun 26 12:02:45s -0:02:45 -
Rule sol89 1989 only - Jun 27 12:03:00s -0:03:00 -
Rule sol89 1989 only - Jun 28 12:03:10s -0:03:10 -
Rule sol89 1989 only - Jun 29 12:03:25s -0:03:25 -
Rule sol89 1989 only - Jun 30 12:03:35s -0:03:35 -
Rule sol89 1989 only - Jul 1 12:03:45s -0:03:45 -
Rule sol89 1989 only - Jul 2 12:04:00s -0:04:00 -
Rule sol89 1989 only - Jul 3 12:04:10s -0:04:10 -
Rule sol89 1989 only - Jul 4 12:04:20s -0:04:20 -
Rule sol89 1989 only - Jul 5 12:04:30s -0:04:30 -
Rule sol89 1989 only - Jul 6 12:04:40s -0:04:40 -
Rule sol89 1989 only - Jul 7 12:04:50s -0:04:50 -
Rule sol89 1989 only - Jul 8 12:05:00s -0:05:00 -
Rule sol89 1989 only - Jul 9 12:05:10s -0:05:10 -
Rule sol89 1989 only - Jul 10 12:05:20s -0:05:20 -
Rule sol89 1989 only - Jul 11 12:05:25s -0:05:25 -
Rule sol89 1989 only - Jul 12 12:05:35s -0:05:35 -
Rule sol89 1989 only - Jul 13 12:05:40s -0:05:40 -
Rule sol89 1989 only - Jul 14 12:05:50s -0:05:50 -
Rule sol89 1989 only - Jul 15 12:05:55s -0:05:55 -
Rule sol89 1989 only - Jul 16 12:06:00s -0:06:00 -
Rule sol89 1989 only - Jul 17 12:06:05s -0:06:05 -
Rule sol89 1989 only - Jul 18 12:06:10s -0:06:10 -
Rule sol89 1989 only - Jul 19 12:06:15s -0:06:15 -
Rule sol89 1989 only - Jul 20 12:06:20s -0:06:20 -
Rule sol89 1989 only - Jul 21 12:06:20s -0:06:20 -
Rule sol89 1989 only - Jul 22 12:06:25s -0:06:25 -
Rule sol89 1989 only - Jul 23 12:06:25s -0:06:25 -
Rule sol89 1989 only - Jul 24 12:06:30s -0:06:30 -
Rule sol89 1989 only - Jul 25 12:06:30s -0:06:30 -
Rule sol89 1989 only - Jul 26 12:06:30s -0:06:30 -
Rule sol89 1989 only - Jul 27 12:06:30s -0:06:30 -
Rule sol89 1989 only - Jul 28 12:06:30s -0:06:30 -
Rule sol89 1989 only - Jul 29 12:06:25s -0:06:25 -
Rule sol89 1989 only - Jul 30 12:06:25s -0:06:25 -
Rule sol89 1989 only - Jul 31 12:06:20s -0:06:20 -
Rule sol89 1989 only - Aug 1 12:06:20s -0:06:20 -
Rule sol89 1989 only - Aug 2 12:06:15s -0:06:15 -
Rule sol89 1989 only - Aug 3 12:06:10s -0:06:10 -
Rule sol89 1989 only - Aug 4 12:06:05s -0:06:05 -
Rule sol89 1989 only - Aug 5 12:06:00s -0:06:00 -
Rule sol89 1989 only - Aug 6 12:05:50s -0:05:50 -
Rule sol89 1989 only - Aug 7 12:05:45s -0:05:45 -
Rule sol89 1989 only - Aug 8 12:05:35s -0:05:35 -
Rule sol89 1989 only - Aug 9 12:05:30s -0:05:30 -
Rule sol89 1989 only - Aug 10 12:05:20s -0:05:20 -
Rule sol89 1989 only - Aug 11 12:05:10s -0:05:10 -
Rule sol89 1989 only - Aug 12 12:05:00s -0:05:00 -
Rule sol89 1989 only - Aug 13 12:04:50s -0:04:50 -
Rule sol89 1989 only - Aug 14 12:04:40s -0:04:40 -
Rule sol89 1989 only - Aug 15 12:04:30s -0:04:30 -
Rule sol89 1989 only - Aug 16 12:04:15s -0:04:15 -
Rule sol89 1989 only - Aug 17 12:04:05s -0:04:05 -
Rule sol89 1989 only - Aug 18 12:03:50s -0:03:50 -
Rule sol89 1989 only - Aug 19 12:03:35s -0:03:35 -
Rule sol89 1989 only - Aug 20 12:03:25s -0:03:25 -
Rule sol89 1989 only - Aug 21 12:03:10s -0:03:10 -
Rule sol89 1989 only - Aug 22 12:02:55s -0:02:55 -
Rule sol89 1989 only - Aug 23 12:02:40s -0:02:40 -
Rule sol89 1989 only - Aug 24 12:02:20s -0:02:20 -
Rule sol89 1989 only - Aug 25 12:02:05s -0:02:05 -
Rule sol89 1989 only - Aug 26 12:01:50s -0:01:50 -
Rule sol89 1989 only - Aug 27 12:01:30s -0:01:30 -
Rule sol89 1989 only - Aug 28 12:01:15s -0:01:15 -
Rule sol89 1989 only - Aug 29 12:00:55s -0:00:55 -
Rule sol89 1989 only - Aug 30 12:00:40s -0:00:40 -
Rule sol89 1989 only - Aug 31 12:00:20s -0:00:20 -
Rule sol89 1989 only - Sep 1 12:00:00s 0:00:00 -
Rule sol89 1989 only - Sep 2 11:59:45s 0:00:15 -
Rule sol89 1989 only - Sep 3 11:59:25s 0:00:35 -
Rule sol89 1989 only - Sep 4 11:59:05s 0:00:55 -
Rule sol89 1989 only - Sep 5 11:58:45s 0:01:15 -
Rule sol89 1989 only - Sep 6 11:58:25s 0:01:35 -
Rule sol89 1989 only - Sep 7 11:58:05s 0:01:55 -
Rule sol89 1989 only - Sep 8 11:57:45s 0:02:15 -
Rule sol89 1989 only - Sep 9 11:57:20s 0:02:40 -
Rule sol89 1989 only - Sep 10 11:57:00s 0:03:00 -
Rule sol89 1989 only - Sep 11 11:56:40s 0:03:20 -
Rule sol89 1989 only - Sep 12 11:56:20s 0:03:40 -
Rule sol89 1989 only - Sep 13 11:56:00s 0:04:00 -
Rule sol89 1989 only - Sep 14 11:55:35s 0:04:25 -
Rule sol89 1989 only - Sep 15 11:55:15s 0:04:45 -
Rule sol89 1989 only - Sep 16 11:54:55s 0:05:05 -
Rule sol89 1989 only - Sep 17 11:54:35s 0:05:25 -
Rule sol89 1989 only - Sep 18 11:54:10s 0:05:50 -
Rule sol89 1989 only - Sep 19 11:53:50s 0:06:10 -
Rule sol89 1989 only - Sep 20 11:53:30s 0:06:30 -
Rule sol89 1989 only - Sep 21 11:53:10s 0:06:50 -
Rule sol89 1989 only - Sep 22 11:52:45s 0:07:15 -
Rule sol89 1989 only - Sep 23 11:52:25s 0:07:35 -
Rule sol89 1989 only - Sep 24 11:52:05s 0:07:55 -
Rule sol89 1989 only - Sep 25 11:51:45s 0:08:15 -
Rule sol89 1989 only - Sep 26 11:51:25s 0:08:35 -
Rule sol89 1989 only - Sep 27 11:51:05s 0:08:55 -
Rule sol89 1989 only - Sep 28 11:50:40s 0:09:20 -
Rule sol89 1989 only - Sep 29 11:50:20s 0:09:40 -
Rule sol89 1989 only - Sep 30 11:50:00s 0:10:00 -
Rule sol89 1989 only - Oct 1 11:49:45s 0:10:15 -
Rule sol89 1989 only - Oct 2 11:49:25s 0:10:35 -
Rule sol89 1989 only - Oct 3 11:49:05s 0:10:55 -
Rule sol89 1989 only - Oct 4 11:48:45s 0:11:15 -
Rule sol89 1989 only - Oct 5 11:48:30s 0:11:30 -
Rule sol89 1989 only - Oct 6 11:48:10s 0:11:50 -
Rule sol89 1989 only - Oct 7 11:47:50s 0:12:10 -
Rule sol89 1989 only - Oct 8 11:47:35s 0:12:25 -
Rule sol89 1989 only - Oct 9 11:47:20s 0:12:40 -
Rule sol89 1989 only - Oct 10 11:47:00s 0:13:00 -
Rule sol89 1989 only - Oct 11 11:46:45s 0:13:15 -
Rule sol89 1989 only - Oct 12 11:46:30s 0:13:30 -
Rule sol89 1989 only - Oct 13 11:46:15s 0:13:45 -
Rule sol89 1989 only - Oct 14 11:46:00s 0:14:00 -
Rule sol89 1989 only - Oct 15 11:45:50s 0:14:10 -
Rule sol89 1989 only - Oct 16 11:45:35s 0:14:25 -
Rule sol89 1989 only - Oct 17 11:45:20s 0:14:40 -
Rule sol89 1989 only - Oct 18 11:45:10s 0:14:50 -
Rule sol89 1989 only - Oct 19 11:45:00s 0:15:00 -
Rule sol89 1989 only - Oct 20 11:44:50s 0:15:10 -
Rule sol89 1989 only - Oct 21 11:44:40s 0:15:20 -
Rule sol89 1989 only - Oct 22 11:44:30s 0:15:30 -
Rule sol89 1989 only - Oct 23 11:44:20s 0:15:40 -
Rule sol89 1989 only - Oct 24 11:44:10s 0:15:50 -
Rule sol89 1989 only - Oct 25 11:44:05s 0:15:55 -
Rule sol89 1989 only - Oct 26 11:44:00s 0:16:00 -
Rule sol89 1989 only - Oct 27 11:43:50s 0:16:10 -
Rule sol89 1989 only - Oct 28 11:43:45s 0:16:15 -
Rule sol89 1989 only - Oct 29 11:43:40s 0:16:20 -
Rule sol89 1989 only - Oct 30 11:43:40s 0:16:20 -
Rule sol89 1989 only - Oct 31 11:43:35s 0:16:25 -
Rule sol89 1989 only - Nov 1 11:43:35s 0:16:25 -
Rule sol89 1989 only - Nov 2 11:43:35s 0:16:25 -
Rule sol89 1989 only - Nov 3 11:43:30s 0:16:30 -
Rule sol89 1989 only - Nov 4 11:43:35s 0:16:25 -
Rule sol89 1989 only - Nov 5 11:43:35s 0:16:25 -
Rule sol89 1989 only - Nov 6 11:43:35s 0:16:25 -
Rule sol89 1989 only - Nov 7 11:43:40s 0:16:20 -
Rule sol89 1989 only - Nov 8 11:43:45s 0:16:15 -
Rule sol89 1989 only - Nov 9 11:43:50s 0:16:10 -
Rule sol89 1989 only - Nov 10 11:43:55s 0:16:05 -
Rule sol89 1989 only - Nov 11 11:44:00s 0:16:00 -
Rule sol89 1989 only - Nov 12 11:44:05s 0:15:55 -
Rule sol89 1989 only - Nov 13 11:44:15s 0:15:45 -
Rule sol89 1989 only - Nov 14 11:44:25s 0:15:35 -
Rule sol89 1989 only - Nov 15 11:44:35s 0:15:25 -
Rule sol89 1989 only - Nov 16 11:44:45s 0:15:15 -
Rule sol89 1989 only - Nov 17 11:44:55s 0:15:05 -
Rule sol89 1989 only - Nov 18 11:45:10s 0:14:50 -
Rule sol89 1989 only - Nov 19 11:45:20s 0:14:40 -
Rule sol89 1989 only - Nov 20 11:45:35s 0:14:25 -
Rule sol89 1989 only - Nov 21 11:45:50s 0:14:10 -
Rule sol89 1989 only - Nov 22 11:46:05s 0:13:55 -
Rule sol89 1989 only - Nov 23 11:46:25s 0:13:35 -
Rule sol89 1989 only - Nov 24 11:46:40s 0:13:20 -
Rule sol89 1989 only - Nov 25 11:47:00s 0:13:00 -
Rule sol89 1989 only - Nov 26 11:47:20s 0:12:40 -
Rule sol89 1989 only - Nov 27 11:47:35s 0:12:25 -
Rule sol89 1989 only - Nov 28 11:47:55s 0:12:05 -
Rule sol89 1989 only - Nov 29 11:48:20s 0:11:40 -
Rule sol89 1989 only - Nov 30 11:48:40s 0:11:20 -
Rule sol89 1989 only - Dec 1 11:49:00s 0:11:00 -
Rule sol89 1989 only - Dec 2 11:49:25s 0:10:35 -
Rule sol89 1989 only - Dec 3 11:49:50s 0:10:10 -
Rule sol89 1989 only - Dec 4 11:50:15s 0:09:45 -
Rule sol89 1989 only - Dec 5 11:50:35s 0:09:25 -
Rule sol89 1989 only - Dec 6 11:51:00s 0:09:00 -
Rule sol89 1989 only - Dec 7 11:51:30s 0:08:30 -
Rule sol89 1989 only - Dec 8 11:51:55s 0:08:05 -
Rule sol89 1989 only - Dec 9 11:52:20s 0:07:40 -
Rule sol89 1989 only - Dec 10 11:52:50s 0:07:10 -
Rule sol89 1989 only - Dec 11 11:53:15s 0:06:45 -
Rule sol89 1989 only - Dec 12 11:53:45s 0:06:15 -
Rule sol89 1989 only - Dec 13 11:54:10s 0:05:50 -
Rule sol89 1989 only - Dec 14 11:54:40s 0:05:20 -
Rule sol89 1989 only - Dec 15 11:55:10s 0:04:50 -
Rule sol89 1989 only - Dec 16 11:55:40s 0:04:20 -
Rule sol89 1989 only - Dec 17 11:56:05s 0:03:55 -
Rule sol89 1989 only - Dec 18 11:56:35s 0:03:25 -
Rule sol89 1989 only - Dec 19 11:57:05s 0:02:55 -
Rule sol89 1989 only - Dec 20 11:57:35s 0:02:25 -
Rule sol89 1989 only - Dec 21 11:58:05s 0:01:55 -
Rule sol89 1989 only - Dec 22 11:58:35s 0:01:25 -
Rule sol89 1989 only - Dec 23 11:59:05s 0:00:55 -
Rule sol89 1989 only - Dec 24 11:59:35s 0:00:25 -
Rule sol89 1989 only - Dec 25 12:00:05s -0:00:05 -
Rule sol89 1989 only - Dec 26 12:00:35s -0:00:35 -
Rule sol89 1989 only - Dec 27 12:01:05s -0:01:05 -
Rule sol89 1989 only - Dec 28 12:01:35s -0:01:35 -
Rule sol89 1989 only - Dec 29 12:02:00s -0:02:00 -
Rule sol89 1989 only - Dec 30 12:02:30s -0:02:30 -
Rule sol89 1989 only - Dec 31 12:03:00s -0:03:00 -
# Riyadh is at about 46 degrees 46 minutes East: 3 hrs, 7 mins, 4 secs
# Before and after 1989, we'll operate on local mean solar time.
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Asia/Riyadh89 3:07:04 - ?? 1989
3:07:04 sol89 ?? 1990
3:07:04 - ??
# For backward compatibility...
Link Asia/Riyadh89 Mideast/Riyadh89
src/timezone/data/southamerica 0 → 100644
View file @ 6a2b75c2
# @(#)southamerica 7.50
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@elsie.nci.nih.gov for general use in the future).
# From Paul Eggert <eggert@twinsun.com> (1999-07-07):
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
#
# Except where otherwise noted, Shanks is the source for entries through 1990,
# and IATA SSIM is the source for entries after 1990.
#
# Earlier editions of these tables used the North American style (e.g. ARST and
# ARDT for Argentine Standard and Daylight Time), but the following quote
# suggests that it's better to use European style (e.g. ART and ARST).
# I suggest the use of _Summer time_ instead of the more cumbersome
# _daylight-saving time_. _Summer time_ seems to be in general use
# in Europe and South America.
# -- E O Cutler, _New York Times_ (1937-02-14), quoted in
# H L Mencken, _The American Language: Supplement I_ (1960), p 466
#
# Earlier editions of these tables also used the North American style
# for time zones in Brazil, but this was incorrect, as Brazilians say
# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in
# the railroad sector, writes (1999-07-06):
# The subject of time zones is currently a matter of discussion/debate in
# Brazil. Let's say that "the Brasilia time" is considered the
# "official time" because Brasilia is the capital city.
# The other three time zones are called "Brasilia time "minus one" or
# "plus one" or "plus two". As far as I know there is no such
# name/designation as "Eastern Time" or "Central Time".
# So I invented the following (English-language) abbreviations for now.
# Corrections are welcome!
# std dst
# -2:00 FNT FNST Fernando de Noronha
# -3:00 BRT BRST Brasilia
# -4:00 AMT AMST Amazon
# -5:00 ACT ACST Acre
###############################################################################
###############################################################################
# Argentina
# From Bob Devine (1988-01-28):
# Argentina: first Sunday in October to first Sunday in April since 1976.
# Double Summer time from 1969 to 1974. Switches at midnight.
# From U. S. Naval Observatory (1988-01-199):
# ARGENTINA 3 H BEHIND UTC
# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
# I am sending modifications to the Argentine time zone table...
# AR was chosen because they are the ISO letters that represent Argentina.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Arg 1930 only - Dec 1 0:00 1:00 S
Rule Arg 1931 only - Apr 1 0:00 0 -
Rule Arg 1931 only - Oct 15 0:00 1:00 S
Rule Arg 1932 1940 - Mar 1 0:00 0 -
Rule Arg 1932 1939 - Nov 1 0:00 1:00 S
Rule Arg 1940 only - Jul 1 0:00 1:00 S
Rule Arg 1941 only - Jun 15 0:00 0 -
Rule Arg 1941 only - Oct 15 0:00 1:00 S
Rule Arg 1943 only - Aug 1 0:00 0 -
Rule Arg 1943 only - Oct 15 0:00 1:00 S
Rule Arg 1946 only - Mar 1 0:00 0 -
Rule Arg 1946 only - Oct 1 0:00 1:00 S
Rule Arg 1963 only - Oct 1 0:00 0 -
Rule Arg 1963 only - Dec 15 0:00 1:00 S
Rule Arg 1964 1966 - Mar 1 0:00 0 -
Rule Arg 1964 1966 - Oct 15 0:00 1:00 S
Rule Arg 1967 only - Apr 2 0:00 0 -
Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S
Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 -
Rule Arg 1974 only - Jan 23 0:00 1:00 S
Rule Arg 1974 only - May 1 0:00 0 -
Rule Arg 1988 only - Dec 1 0:00 1:00 S
#
# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
# These corrections were contributed by InterSoft Argentina S.A.,
# obtaining the data from the:
# Talleres de Hidrografia Naval Argentina
# (Argentine Naval Hydrography Institute)
#
# Shanks stops after 1992-03-01; go with Otero.
Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 -
Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
#
# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
# From this moment on, the law that mandated the daylight saving
# time corrections was derogated and no more modifications
# to the time zones (for daylight saving) are now made.
#
# From Rives McDow (2000-01-10):
# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
# which did not result in the switch of a time zone, as they stayed 9 hours
# from the International Date Line.
Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S
Rule Arg 2000 only - Mar Sun>=1 0:00 0 -
#
# From Peter Gradelski via Steffen Thorsen (2000-03-01):
# We just checked with our Sao Paulo office and they say the government of
# Argentina decided not to become one of the countries that go on or off DST.
# So Buenos Aires should be -3 hours from GMT at all times.
#
# From Fabian L. Arce Jofre <farcejofre@bigfoot.com> (2000-04-04):
# The law that claimed DST for Argentina was derogated by President Fernando
# de la Rua on March 2, 2000, because it would make people spend more energy
# in the winter time, rather than less. The change took effect on March 3.
#
# From Mariano Absatz (2001-06-06):
# one of the major newspapers here in Argentina said that the 1999
# Timezone Law (which never was effectively applied) will (would?) be
# in effect.... The article is at
# http://ar.clarin.com/diario/2001-06-06/e-01701.htm
# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted
# 1999-09-17, and published 1999-09-21. The official publication is at:
# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
# Regretfully, you have to subscribe (and pay) for the on-line version....
#
# (2001-06-12):
# the timezone for Argentina will not change next Sunday.
# Apparently it will do so on Sunday 24th....
# http://ar.clarin.com/diario/2001-06-12/s-03501.htm
#
# (2001-06-25):
# Last Friday (yes, the last working day before the date of the change), the
# Senate annulled the 1999 law that introduced the changes later postponed.
# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
# It remains the vote of the Deputies..., but it will be the same....
# This kind of things had always been done this way in Argentina.
# We are still -03:00 all year round in all of the country.
#
#
# From Paul Eggert (2002-01-22):
# <a href="http://www.spicasc.net/horvera.html">
# Hora de verano para la Republica Argentina (2000-10-01)
# </a> says that standard time in Argentina from 1894-10-31
# to 1920-05-01 was -4:16:48.25. Go with this more-precise value
# over Shanks.
# Unless otherwise specified, data are from Shanks through 1992, from
# the IATA otherwise. As noted below, Shanks says that
# America/Cordoba split into 7 subregions during 1991/1992, but we
# haven't verified this yet so for now we'll keep it a single region.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
# Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC),
# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF)
Zone America/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May # Cordoba Mean Time
-4:00 - ART 1930 Dec
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART
#
# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
# Formosa (FM), Salta (SA), Tucuman (TM), Santiago del Estero (SE),
# Cordoba (CB), La Rioja (LR), San Juan (SJ), San Luis (SL), La Pampa (LP),
# Neuquen (NQ), Rio Negro (RN), Chubut (CH)
#
# Shanks also makes the following claims, which we haven't verified:
# - Formosa switched to -3:00 on 1991-01-07.
# - La Rioja and San Juan switched to -4:00 on 1991-03-01
# and then to -3:00 on 1991-05-07.
# - Misiones switched to -3:00 on 1990-12-29.
# - Chaco switched to -3:00 on 1991-01-04.
# - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15,
# then to -4:00 on 1991-03-01, then to -3:00 on 1991-06-01.
# - Santiago del Estero switched to -4:00 on 1991-04-01,
# then to -3:00 on 1991-04-26.
# If we need to add Zones for these areas, we may need to have a subdirectory
# for Argentina, as e.g. "America/San_Luis" is too ambiguious.
#
Zone America/Cordoba -4:16:48 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
-4:00 - ART 1930 Dec
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1991 Mar 3
-4:00 - WART 1991 Oct 20
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART
#
# Jujuy (JY)
Zone America/Jujuy -4:21:12 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
-4:00 - ART 1930 Dec
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1990 Mar 4
-4:00 - WART 1990 Oct 28
-4:00 1:00 WARST 1991 Mar 17
-4:00 - WART 1991 Oct 6
-3:00 1:00 ARST 1992
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART
#
# Catamarca (CT)
Zone America/Catamarca -4:23:08 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
-4:00 - ART 1930 Dec
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1991 Mar 3
-4:00 - WART 1991 Oct 20
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART
#
# Mendoza (MZ)
Zone America/Mendoza -4:35:16 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
-4:00 - ART 1930 Dec
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1990 Mar 4
-4:00 - WART 1990 Oct 15
-4:00 1:00 WARST 1991 Mar 1
-4:00 - WART 1991 Oct 15
-4:00 1:00 WARST 1992 Mar 1
-4:00 - WART 1992 Oct 18
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART
# Aruba
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
-4:30 - ANT 1965 # Netherlands Antilles Time
-4:00 - AST
# Bolivia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/La_Paz -4:32:36 - LMT 1890
-4:32:36 - CMT 1931 Oct 15 # Calamarca MT
-4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
-4:00 - BOT # Bolivia Time
# Brazil
# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
# The mayor of Rio recently attempted to change the time zone rules
# just in his city, in order to leave more summer time for the tourist trade.
# The rule change lasted only part of the day;
# the federal government refused to follow the city's rules, and business
# was in a chaos, so the mayor backed down that afternoon.
# From IATA SSIM (1996-02):
# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),
# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO),
# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
# [The last three states are new to this issue of the IATA SSIM.]
# From Gwillim Law (1996-10-07):
# Geography, history (Tocantins was part of Goias until 1989), and other
# sources of time zone information lead me to believe that AL, SE, and TO were
# always in BR1, and so the only change was whether or not they observed DST....
# The earliest issue of the SSIM I have is 2/91. Each issue from then until
# 9/95 says that DST is observed only in the ten states I quoted from 9/95,
# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
# (UTC-4).... The other two time zones given for Brazil are BR3, which is
# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
# become part of the state of Pernambuco). The boundary between BR1 and BR2
# has never been clearly stated. They've simply been called East and West.
# However, some conclusions can be drawn from another IATA manual: the Airline
# Coding Directory, which lists close to 400 airports in Brazil. For each
# airport it gives a time zone which is coded to the SSIM. From that
# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE),
# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do
# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.
# From Marcos Tadeu (1998-09-27):
# <a href="http://pcdsh01.on.br/verao1.html">
# Brazilian official page
# </a>
# From Jesper Norgaard (2000-11-03):
# [For an official list of which regions in Brazil use which time zones, see:]
# http://pcdsh01.on.br/Fusbr.htm
# http://pcdsh01.on.br/Fusbrhv.htm
# From Celso Doria via David Madeo (2002-10-09):
# The reason for the delay this year has to do with elections in Brazil.
#
# Unlike in the United States, elections in Brazil are 100% computerized and
# the results are known almost immediately. Yesterday, it was the first
# round of the elections when 115 million Brazilians voted for President,
# Governor, Senators, Federal Deputies, and State Deputies. Nobody is
# counting (or re-counting) votes anymore and we know there will be a second
# round for the Presidency and also for some Governors. The 2nd round will
# take place on October 27th.
#
# The reason why the DST will only begin November 3rd is that the thousands
# of electoral machines used cannot have their time changed, and since the
# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM,
# the Government decided to postpone DST, instead of changing the Constitution
# (maybe, for the next elections, it will be possible to change the clock)...
# From Paul Eggert (2002-10-10):
# The official decrees referenced below are mostly taken from
# <a href="http://pcdsh01.on.br/DecHV.html">
# Decretos sobre o Horario de Verao no Brasil
# </a> (2001-09-20, in Portuguese).
# The official site for all decrees, including those not related to time, is
# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/principal_ano.htm">
# Presidencia da Republica, Subchefia para Assuntos Juridicos, Decretos
# </a> (in Portuguese).
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01)
# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10)
Rule Brazil 1931 only - Oct 3 11:00 1:00 S
Rule Brazil 1932 1933 - Apr 1 0:00 0 -
Rule Brazil 1932 only - Oct 3 0:00 1:00 S
# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10)
# revoked DST.
# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24)
# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13)
Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
Rule Brazil 1950 only - Apr 16 1:00 0 -
Rule Brazil 1951 1952 - Apr 1 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24)
Rule Brazil 1953 only - Mar 1 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30)
# revoked DST.
# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18)
# established DST from 1963-10-23 00:00 to 1964-02-29 00:00
# in SP, RJ, GB, MG, ES, due to the prolongation of the drought.
# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03)
# extended the above decree to all of the national territory on 12-09.
Rule Brazil 1963 only - Dec 9 0:00 1:00 S
# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25)
# extended summer time by one day to 1964-03-01 00:00 (start of school).
Rule Brazil 1964 only - Mar 1 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27)
Rule Brazil 1965 only - Jan 31 0:00 1:00 S
Rule Brazil 1965 only - Mar 31 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22)
Rule Brazil 1965 only - Dec 1 0:00 1:00 S
# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18)
Rule Brazil 1966 1968 - Mar 1 0:00 0 -
Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S
# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15)
# revoked DST.
# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27)
Rule Brazil 1985 only - Nov 2 0:00 1:00 S
# Decree 92,310 (1986-01-21)
# Decree 92,463 (1986-03-13)
Rule Brazil 1986 only - Mar 15 0:00 0 -
# Decree 93,316 (1986-10-01)
Rule Brazil 1986 only - Oct 25 0:00 1:00 S
Rule Brazil 1987 only - Feb 14 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22)
Rule Brazil 1987 only - Oct 25 0:00 1:00 S
Rule Brazil 1988 only - Feb 7 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12)
# except for the states of AC, AM, PA, RR, RO, and AP (then a territory)
Rule Brazil 1988 only - Oct 16 0:00 1:00 S
Rule Brazil 1989 only - Jan 29 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21)
# with the same exceptions
Rule Brazil 1989 only - Oct 15 0:00 1:00 S
Rule Brazil 1990 only - Feb 11 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17)
# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.
# Decree 99,629 (1990-10-19) adds BA, MT.
Rule Brazil 1990 only - Oct 21 0:00 1:00 S
Rule Brazil 1991 only - Feb 17 0:00 0 -
# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25)
# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.
Rule Brazil 1991 only - Oct 20 0:00 1:00 S
Rule Brazil 1992 only - Feb 9 0:00 0 -
# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16)
# adopted by same states.
Rule Brazil 1992 only - Oct 25 0:00 1:00 S
Rule Brazil 1993 only - Jan 31 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28)
# adopted by same states, plus AM.
# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22)
# adopted by same states, minus AM and MT.
# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14)
# adopted by same states, plus MT and TO.
# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13)
# adds AL, SE.
Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S
Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 -
Rule Brazil 1996 only - Feb 11 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04)
# adopted by same states, minus AL, SE.
Rule Brazil 1996 only - Oct 6 0:00 1:00 S
Rule Brazil 1997 only - Feb 16 0:00 0 -
# From Daniel C. Sobral <dcs@gns.com.br> (1998-02-12):
# In 1997, the DS began on October 6. The stated reason was that
# because international television networks ignored Brazil's policy on DS,
# they bought the wrong times on satellite for coverage of Pope's visit.
# This year, the ending date of DS was postponed to March 1
# to help dealing with the shortages of electric power.
#
# From Paul Eggert (1998-02-25):
# <a href="http://churchnet.ucsm.ac.uk/news/files2/news165.htm">
# Brazil Prepares for Papal Visit
# </a>,
# Church Net UK (1997-10-02).
#
# Decree 2,317 (1997-09-04), adopted by same states.
Rule Brazil 1997 only - Oct 6 0:00 1:00 S
# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a>
# (1998-02-10)
Rule Brazil 1998 only - Mar 1 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11)
# adopted by the same states as before.
Rule Brazil 1998 only - Oct 11 0:00 1:00 S
Rule Brazil 1999 only - Feb 21 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a>
# (1999-08-23) adopted by same states.
# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30)
# adds SE, AL, PB, PE, RN, CE, PI, MA and RR.
Rule Brazil 1999 only - Oct 3 0:00 1:00 S
Rule Brazil 2000 only - Feb 27 0:00 0 -
# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06)
# adopted by the same states as before.
# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13)
# repeals DST in PE and RR, effective 2000-10-15 00:00.
# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17)
# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a>
# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S
Rule Brazil 2001 max - Feb Sun>=15 0:00 0 -
# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm"></a>
Rule Brazil 2002 only - Nov 3 0:00 1:00 S
# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.
# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm"></a>
Rule Brazil 2003 max - Oct Sun>=15 0:00 1:00 S
# The latest ruleset listed above says that the following states observe DST:
# DF, ES, GO, MG, MS, PR, RJ, RS, SC, SP.
#
# For dates after mid-2004, the above rules with TO="max" are guesses
# and are quite possibly wrong, but are more likely than no DST at all.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
# Fernando de Noronha (administratively part of PE)
Zone America/Noronha -2:09:40 - LMT 1914
-2:00 Brazil FN%sT 1990 Sep 17
-2:00 - FNT 1999 Sep 30
-2:00 Brazil FN%sT 2000 Oct 15
-2:00 - FNT 2001 Sep 13
-2:00 Brazil FN%sT 2002 Oct 1
-2:00 - FNT
# Other Atlantic islands have no permanent settlement.
# These include Trindade and Martin Vaz (administratively part of ES),
# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE).
# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
# it also included the Penedos.
#
# Amapa (AP), east Para (PA)
# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu.
# The division between east and west Para is the river Xingu.
# In the north a very small part from the river Javary (now Jari I guess,
# the border with Amapa) to the Amazon, then to the Xingu.
Zone America/Belem -3:13:56 - LMT 1914
-3:00 Brazil BR%sT 1988 Sep 12
-3:00 - BRT
#
# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN),
# Paraiba (PB)
Zone America/Fortaleza -2:34:00 - LMT 1914
-3:00 Brazil BR%sT 1990 Sep 17
-3:00 - BRT 1999 Sep 30
-3:00 Brazil BR%sT 2000 Oct 22
-3:00 - BRT 2001 Sep 13
-3:00 Brazil BR%sT 2002 Oct 1
-3:00 - BRT
#
# Pernambuco (PE) (except Atlantic islands)
Zone America/Recife -2:19:36 - LMT 1914
-3:00 Brazil BR%sT 1990 Sep 17
-3:00 - BRT 1999 Sep 30
-3:00 Brazil BR%sT 2000 Oct 15
-3:00 - BRT 2001 Sep 13
-3:00 Brazil BR%sT 2002 Oct 1
-3:00 - BRT
#
# Tocantins (TO)
Zone America/Araguaina -3:12:48 - LMT 1914
-3:00 Brazil BR%sT 1990 Sep 17
-3:00 - BRT 1995 Sep 14
-3:00 Brazil BR%sT 2003 Sep 24
-3:00 - BRT
#
# Alagoas (AL), Sergipe (SE)
Zone America/Maceio -2:22:52 - LMT 1914
-3:00 Brazil BR%sT 1990 Sep 17
-3:00 - BRT 1995 Oct 13
-3:00 Brazil BR%sT 1996 Sep 4
-3:00 - BRT 1999 Sep 30
-3:00 Brazil BR%sT 2000 Oct 22
-3:00 - BRT 2001 Sep 13
-3:00 Brazil BR%sT 2002 Oct 1
-3:00 - BRT
#
# Bahia (BA)
# There are too many Salvadors elsewhere, so use America/Bahia instead
# of America/Salvador.
Zone America/Bahia -2:34:04 - LMT 1914
-3:00 Brazil BR%sT 2003 Sep 24
-3:00 - BRT
#
# Goias (GO), Distrito Federal (DF), Minas Gerais (MG),
# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR),
# Santa Catarina (SC), Rio Grande do Sul (RS)
Zone America/Sao_Paulo -3:06:28 - LMT 1914
-3:00 Brazil BR%sT 1963 Oct 23 00:00
-3:00 1:00 BRST 1964
-3:00 Brazil BR%sT
#
# Mato Grosso do Sul (MS)
Zone America/Campo_Grande -3:38:28 - LMT 1914
-4:00 Brazil AM%sT
#
# Mato Grosso (MT)
Zone America/Cuiaba -3:44:20 - LMT 1914
-4:00 Brazil AM%sT 1994 Sep 22
-4:00 - AMT 1995 Sep 14
-4:00 Brazil AM%sT 2003 Sep 24
-4:00 - AMT
#
# west Para (PA), Rondonia (RO)
# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem.
Zone America/Porto_Velho -4:15:36 - LMT 1914
-4:00 Brazil AM%sT 1988 Sep 12
-4:00 - AMT
#
# Roraima (RR)
Zone America/Boa_Vista -4:02:40 - LMT 1914
-4:00 Brazil AM%sT 1988 Sep 12
-4:00 - AMT 1999 Sep 30
-4:00 Brazil AM%sT 2000 Oct 15
-4:00 - AMT
#
# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto
# The great circle line from Tabatinga to Porto Acre divides
# east from west Amazonas.
Zone America/Manaus -4:00:04 - LMT 1914
-4:00 Brazil AM%sT 1988 Sep 12
-4:00 - AMT 1993 Sep 28
-4:00 Brazil AM%sT 1994 Sep 22
-4:00 - AMT
#
# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
# Eirunepe, Envira, Ipixuna
Zone America/Eirunepe -4:39:28 - LMT 1914
-5:00 Brazil AC%sT 1988 Sep 12
-5:00 - ACT 1993 Sep 28
-5:00 Brazil AC%sT 1994 Sep 22
-5:00 - ACT
#
# Acre (AC)
Zone America/Rio_Branco -4:31:12 - LMT 1914
-5:00 Brazil AC%sT 1988 Sep 12
-5:00 - ACT
# Chile
# From Eduardo Krell (1995-10-19):
# The law says to switch to DST at midnight [24:00] on the second SATURDAY
# of October.... The law is the same for March and October.
# (1998-09-29):
# Because of the drought this year, the government decided to go into
# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
# (unless there's another dry season next year, I guess).
# From Julio I. Pacheco Troncoso (1999-03-18):
# Because of the same drought, the government decided to end DST later,
# on April 3, (one-time change).
# From Gwillim Law (2001-05-04):
# I came across another article in "La Tercera" about Chilean DST.
# <http://www.tercera.cl/diario/2000/10/13/t-extras.html>
# It clearly confirms my earlier suggestion, that DST begins at 22:00
# on Easter Island.... But it also seems to be saying that the
# observance of DST in Chile began in 1966, rather than 1969 as
# ... [Shanks] has it....
#
# My translation:
#
# "The Chilean Army has announced that summer time will begin tomorrow,
# Saturday, October 14 in continental Chile, insular Chile, and
# Antarctica, as provided by Supreme Decree 25 of January 11, 1966.
# By the preceding, official time in continental Chile and Chilean
# Antarctic, and official time in Western Insular Chile, which applies
# to Easter Island and Sala y Gomez Island, will be set forward at
# midnight and at 22:00, respectively, by 20 minutes."
# From Paul Eggert (2001-05-04):
# Go with this article in preference to Shanks's 1969 date for modern DST.
# Assume this rule has been used since DST was introduced in the islands.
# From Paul Eggert (2002-10-24):
# <http://www.shoa.cl/shoa/faqhoraoficial.htm> gives many details that
# disagree with the following table, but we haven't had time to compare them.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Chile 1918 only - Sep 1 0:00 1:00 S
Rule Chile 1919 only - Jul 2 0:00 0 -
Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
Rule Chile 1928 1932 - Apr 1 0:00 0 -
Rule Chile 1966 1997 - Oct Sun>=9 4:00u 1:00 S
Rule Chile 1967 1998 - Mar Sun>=9 3:00u 0 -
Rule Chile 1998 only - Sep 27 4:00u 1:00 S
Rule Chile 1999 only - Apr 4 3:00u 0 -
Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S
Rule Chile 2000 max - Mar Sun>=9 3:00u 0 -
# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14;
# (1996-09) says 1998-03-08. Ignore these.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Santiago -4:42:40 - LMT 1890
-4:42:40 - SMT 1910 # Santiago Mean Time
-5:00 Chile CL%sT 1932 Sep # Chile Time
-4:00 Chile CL%sT
Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri
-7:17:28 - MMT 1932 Sep # Mataveri Mean Time
-7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time
-6:00 Chile EAS%sT
#
# Sala y Gomez Island is like Pacific/Easter.
# Other Chilean locations, including Juan Fernandez Is, San Ambrosio,
# San Felix, and Antarctic bases, are like America/Santiago.
# Colombia
# Shanks specifies 24:00 for 1992 transition times; go with IATA,
# as it seems implausible to change clocks at midnight New Year's Eve.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule CO 1992 only - May 2 0:00 1:00 S
Rule CO 1992 only - Dec 31 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Bogota -4:56:20 - LMT 1884 Mar 13
-4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time
-5:00 CO CO%sT # Colombia Time
# Malpelo, Providencia, San Andres
# no information; probably like America/Bogota
# Curacao
# Shanks says that Bottom and Oranjestad have been at -4:00 since
# standard time was introduced on 1912-03-02; and that Kralendijk and Rincon
# used Kralendijk Mean Time (-4:33:08) from 1912-02-02 to 1965-01-01.
# This all predates our 1970 cutoff, though.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad
-4:30 - ANT 1965 # Netherlands Antilles Time
-4:00 - AST
# Ecuador
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Guayaquil -5:19:20 - LMT 1890
-5:14:00 - QMT 1931 # Quito Mean Time
-5:00 - ECT # Ecuador Time
Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
-5:00 - ECT 1986
-6:00 - GALT # Galapagos Time
# Falklands
# From Paul Eggert (2001-03-05):
# Between 1990 and 2000 inclusive, Shanks and the IATA agree except
# the IATA gives 1996-09-08. Go with Shanks.
# From Falkland Islands Government Office, London (2001-01-22)
# via Jesper Norgaard:
# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
# April 2001 and advance one hour to summer time at 2 am on Sunday 2
# September. It is anticipated that the clocks will revert back at 2
# am on Sunday 21 April 2002 and advance to summer time at 2 am on
# Sunday 1 September.
# From Rives McDow (2001-02-13):
#
# I have communicated several times with people there, and the last
# time I had communications that was helpful was in 1998. Here is
# what was said then:
#
# "The general rule was that Stanley used daylight saving and the Camp
# did not. However for various reasons many people in the Camp have
# started to use daylight saving (known locally as 'Stanley Time')
# There is no rule as to who uses daylight saving - it is a matter of
# personal choice and so it is impossible to draw a map showing who
# uses it and who does not. Any list would be out of date as soon as
# it was produced. This year daylight saving ended on April 18/19th
# and started again on September 12/13th. I do not know what the rule
# is, but can find out if you like. We do not change at the same time
# as UK or Chile."
#
# I did have in my notes that the rule was "Second Saturday in Sep at
# 0:00 until third Saturday in Apr at 0:00". I think that this does
# not agree in some cases with Shanks; is this true?
#
# Also, there is no mention in the list that some areas in the
# Falklands do not use DST. I have found in my communications there
# that these areas are on the western half of East Falkland and all of
# West Falkland. Stanley is the only place that consistently observes
# DST. Again, as in other places in the world, the farmers don't like
# it. West Falkland is almost entirely sheep farmers.
#
# I know one lady there that keeps a list of which farm keeps DST and
# which doesn't each year. She runs a shop in Stanley, and says that
# the list changes each year. She uses it to communicate to her
# customers, catching them when they are home for lunch or dinner.
# From Paul Eggert (2001-03-05):
# For now, we'll just record the time in Stanley, since we have no
# better info.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
Rule Falk 1939 only - Oct 1 0:00 1:00 S
Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
Rule Falk 1943 only - Jan 1 0:00 0 -
Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
Rule Falk 1984 only - Sep 16 0:00 1:00 S
Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S
Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
Rule Falk 2001 max - Apr Sun>=15 2:00 0 -
Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Stanley -3:51:24 - LMT 1890
-3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
-4:00 Falk FK%sT 1983 May # Falkland Is Time
-3:00 Falk FK%sT 1985 Sep 15
-4:00 Falk FK%sT
# French Guiana
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Cayenne -3:29:20 - LMT 1911 Jul
-4:00 - GFT 1967 Oct # French Guiana Time
-3:00 - GFT
# Guyana
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
-3:45 - GBGT 1966 May 26 # Br Guiana Time
-3:45 - GYT 1975 Jul 31 # Guyana Time
-3:00 - GYT 1991
# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
-4:00 - GYT
# Paraguay
# From Paul Eggert (1999-10-29):
# Shanks (1999) says that spring transitions are from 01:00 -> 02:00,
# and autumn transitions are from 00:00 -> 23:00. Go with earlier
# editions of Shanks, and with the IATA, who say transitions occur at 00:00.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Para 1975 1988 - Oct 1 0:00 1:00 S
Rule Para 1975 1978 - Mar 1 0:00 0 -
Rule Para 1979 1991 - Apr 1 0:00 0 -
Rule Para 1989 only - Oct 22 0:00 1:00 S
Rule Para 1990 only - Oct 1 0:00 1:00 S
Rule Para 1991 only - Oct 6 0:00 1:00 S
Rule Para 1992 only - Mar 1 0:00 0 -
Rule Para 1992 only - Oct 5 0:00 1:00 S
Rule Para 1993 only - Mar 31 0:00 0 -
Rule Para 1993 1995 - Oct 1 0:00 1:00 S
Rule Para 1994 1995 - Feb lastSun 0:00 0 -
Rule Para 1996 only - Mar 1 0:00 0 -
# IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
# From Steffen Thorsen (2000-10-02):
# I have three independent reports that Paraguay changed to DST this Sunday
# (10-01).
#
# Translated by Gwillim Law (2001-02-27) from
# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm">
# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01)
# </a>:
# Starting at 0:00 today, the clock will be set forward 60 minutes, in
# fulfillment of Decree No. 7,273 of the Executive Power.... The time change
# system has been operating for several years. Formerly there was a separate
# decree each year; the new law has the same effect, but permanently. Every
# year, the time will change on the first Sunday of October; likewise, the
# clock will be set back on the first Sunday of March.
#
# From Jesper Norgaard (2001-03-06) [an official URL saying similar things]:
# http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.900592
#
Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
# IATA SSIM (1997-09) says Mar 1; go with Shanks.
Rule Para 1997 only - Feb lastSun 0:00 0 -
# Shanks says 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -
# From Rives McDow (2002-02-28):
# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the
# dst method to be from the first Sunday in September to the first Sunday in
# April.
Rule Para 2002 max - Apr Sun>=1 0:00 0 -
Rule Para 2002 max - Sep Sun>=1 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Asuncion -3:50:40 - LMT 1890
-3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time
-4:00 - PYT 1972 Oct # Paraguay Time
-3:00 - PYT 1974 Apr
-4:00 Para PY%sT
# Peru
#
# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net">
# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a>
# When we were in Peru in 1985-1986, they apparently switched over
# sometime between December 29 and January 3 while we were on the Amazon.
#
# From Paul Eggert (2003-11-02):
# Shanks doesn't have this transition. Assume 1986 was like 1987.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Peru 1938 only - Jan 1 0:00 1:00 S
Rule Peru 1938 only - Apr 1 0:00 0 -
Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
Rule Peru 1986 1987 - Apr 1 0:00 0 -
Rule Peru 1990 only - Jan 1 0:00 1:00 S
Rule Peru 1990 only - Apr 1 0:00 0 -
# IATA is ambiguous for 1993/1995; go with Shanks.
Rule Peru 1994 only - Jan 1 0:00 1:00 S
Rule Peru 1994 only - Apr 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Lima -5:08:12 - LMT 1890
-5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
-5:00 Peru PE%sT # Peru Time
# South Georgia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
-2:00 - GST # South Georgia Time
# South Sandwich Is
# uninhabited; scientific personnel have wintered
# Suriname
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Paramaribo -3:40:40 - LMT 1911
-3:40:52 - PMT 1935 # Paramaribo Mean Time
-3:40:36 - PMT 1945 Oct # The capital moved?
-3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
-3:30 - SRT 1984 Oct # Suriname Time
-3:00 - SRT
# Trinidad and Tobago
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
-4:00 - AST
# Uruguay
# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman gives 1923 Oct 1; go with Shanks.
Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman.
Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
# Whitman gives 1937 Oct 3; go with Shanks.
Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS
# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
# and 1943 Apr 13 ``to present time''; go with Shanks.
Rule Uruguay 1941 only - Aug 1 0:00 0 -
Rule Uruguay 1942 only - Jan 1 0:00 0:30 HS
Rule Uruguay 1942 only - Dec 14 0:00 1:00 S
Rule Uruguay 1943 only - Mar 14 0:00 0 -
Rule Uruguay 1959 only - May 24 0:00 1:00 S
Rule Uruguay 1959 only - Nov 15 0:00 0 -
Rule Uruguay 1960 only - Jan 17 0:00 1:00 S
Rule Uruguay 1960 only - Mar 6 0:00 0 -
Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S
Rule Uruguay 1965 only - Sep 26 0:00 0 -
Rule Uruguay 1966 1967 - Oct 31 0:00 0 -
Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS
Rule Uruguay 1968 1970 - Dec 2 0:00 0 -
Rule Uruguay 1972 only - Apr 24 0:00 1:00 S
Rule Uruguay 1972 only - Aug 15 0:00 0 -
Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS
Rule Uruguay 1974 only - Dec 22 0:00 1:00 S
Rule Uruguay 1976 only - Oct 1 0:00 0 -
Rule Uruguay 1977 only - Dec 4 0:00 1:00 S
Rule Uruguay 1978 only - Apr 1 0:00 0 -
Rule Uruguay 1979 only - Oct 1 0:00 1:00 S
Rule Uruguay 1980 only - May 1 0:00 0 -
Rule Uruguay 1987 only - Dec 14 0:00 1:00 S
Rule Uruguay 1988 only - Mar 14 0:00 0 -
Rule Uruguay 1988 only - Dec 11 0:00 1:00 S
Rule Uruguay 1989 only - Mar 12 0:00 0 -
Rule Uruguay 1989 only - Oct 29 0:00 1:00 S
# Shanks says no DST was observed in 1990/1 and 1991/2,
# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA.
Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
Rule Uruguay 1993 only - Feb 28 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
-3:44:44 - MMT 1920 May 1 # Montevideo MT
-3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
-3:00 Uruguay UY%sT
# Venezuela
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Caracas -4:27:44 - LMT 1890
-4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
-4:30 - VET 1965 # Venezuela Time
-4:00 - VET
src/timezone/data/systemv 0 → 100644
View file @ 6a2b75c2
# @(#)systemv 7.3
# Old rules, should the need arise.
# No attempt is made to handle Newfoundland, since it cannot be expressed
# using the System V "TZ" scheme (half-hour offset), or anything outside
# North America (no support for non-standard DST start/end dates), nor
# the change in the DST rules in the US in 1987 (which occurred before
# the old rules were written).
#
# If you need the old rules, uncomment ## lines and comment-out Link lines.
# Compile this *without* leap second correction for true conformance.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
## Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D
## Rule SystemV min 1973 - Oct lastSun 2:00 0 S
## Rule SystemV 1974 only - Jan 6 2:00 1:00 D
## Rule SystemV 1974 only - Nov lastSun 2:00 0 S
## Rule SystemV 1975 only - Feb 23 2:00 1:00 D
## Rule SystemV 1975 only - Oct lastSun 2:00 0 S
## Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
## Rule SystemV 1976 max - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
## Zone SystemV/AST4ADT -4:00 SystemV A%sT
## Zone SystemV/EST5EDT -5:00 SystemV E%sT
## Zone SystemV/CST6CDT -6:00 SystemV C%sT
## Zone SystemV/MST7MDT -7:00 SystemV M%sT
## Zone SystemV/PST8PDT -8:00 SystemV P%sT
## Zone SystemV/YST9YDT -9:00 SystemV Y%sT
## Zone SystemV/AST4 -4:00 - AST
## Zone SystemV/EST5 -5:00 - EST
## Zone SystemV/CST6 -6:00 - CST
## Zone SystemV/MST7 -7:00 - MST
## Zone SystemV/PST8 -8:00 - PST
## Zone SystemV/YST9 -9:00 - YST
## Zone SystemV/HST10 -10:00 - HST
# For now...
Link America/Halifax SystemV/AST4ADT
Link America/New_York SystemV/EST5EDT
Link America/Chicago SystemV/CST6CDT
Link America/Denver SystemV/MST7MDT
Link America/Los_Angeles SystemV/PST8PDT
Link America/Anchorage SystemV/YST9YDT
Link America/Puerto_Rico SystemV/AST4
Link America/Indianapolis SystemV/EST5
Link America/Regina SystemV/CST6
Link America/Phoenix SystemV/MST7
Link Pacific/Pitcairn SystemV/PST8
Link Pacific/Gambier SystemV/YST9
Link Pacific/Honolulu SystemV/HST10
src/timezone/data/yearistype.sh 0 → 100755
View file @ 6a2b75c2
#! /bin/sh
: '@(#)yearistype.sh 7.7'
case $#-$1 in
2-|2-0*|2-*[!0-9]*)
echo "$0: wild year - $1" >&2
exit 1 ;;
esac
case $#-$2 in
2-even)
case $1 in
*[24680]) exit 0 ;;
*) exit 1 ;;
esac ;;
2-nonpres|2-nonuspres)
case $1 in
*[02468][048]|*[13579][26]) exit 1 ;;
*) exit 0 ;;
esac ;;
2-odd)
case $1 in
*[13579]) exit 0 ;;
*) exit 1 ;;
esac ;;
2-uspres)
case $1 in
*[02468][048]|*[13579][26]) exit 0 ;;
*) exit 1 ;;
esac ;;
2-*)
echo "$0: wild type - $2" >&2 ;;
esac
echo "$0: usage is $0 year even|odd|uspres|nonpres|nonuspres" >&2
exit 1
src/timezone/data/zone.tab 0 → 100644
View file @ 6a2b75c2
# @(#)zone.tab 1.29
#
# TZ zone descriptions
#
# From Paul Eggert <eggert@twinsun.com> (1996-08-05):
#
# This file contains a table with the following columns:
# 1. ISO 3166 2-character country code. See the file `iso3166.tab'.
# 2. Latitude and longitude of the zone's principal location
# in ISO 6709 sign-degrees-minutes-seconds format,
# either +-DDMM+-DDDMM or +-DDMMSS+-DDDMMSS,
# first latitude (+ is north), then longitude (+ is east).
# 3. Zone name used in value of TZ environment variable.
# 4. Comments; present if and only if the country has multiple rows.
#
# Columns are separated by a single tab.
# The table is sorted first by country, then an order within the country that
# (1) makes some geographical sense, and
# (2) puts the most populous zones first, where that does not contradict (1).
#
# Lines beginning with `#' are comments.
#
#country-
#code coordinates TZ comments
AD +4230+00131 Europe/Andorra
AE +2518+05518 Asia/Dubai
AF +3431+06912 Asia/Kabul
AG +1703-06148 America/Antigua
AI +1812-06304 America/Anguilla
AL +4120+01950 Europe/Tirane
AM +4011+04430 Asia/Yerevan
AN +1211-06900 America/Curacao
AO -0848+01314 Africa/Luanda
AQ -7750+16636 Antarctica/McMurdo McMurdo Station, Ross Island
AQ -9000+00000 Antarctica/South_Pole Amundsen-Scott Station, South Pole
AQ -6734-06808 Antarctica/Rothera Rothera Station, Adelaide Island
AQ -6448-06406 Antarctica/Palmer Palmer Station, Anvers Island
AQ -6736+06253 Antarctica/Mawson Mawson Station, Holme Bay
AQ -6835+07758 Antarctica/Davis Davis Station, Vestfold Hills
AQ -6617+11031 Antarctica/Casey Casey Station, Bailey Peninsula
AQ -7824+10654 Antarctica/Vostok Vostok Station, S Magnetic Pole
AQ -6640+14001 Antarctica/DumontDUrville Dumont-d'Urville Base, Terre Adelie
AQ -690022+0393524 Antarctica/Syowa Syowa Station, E Ongul I
AR -3436-05827 America/Buenos_Aires E Argentina (BA, DF, SC, TF)
AR -3124-06411 America/Cordoba most locations (CB,CC,CH,CN,ER,FM,LP,LR,MN,NQ,RN,SA,SE,SF,SJ,SL,TM)
AR -2411-06518 America/Jujuy Jujuy (JY)
AR -2828-06547 America/Catamarca Catamarca (CT)
AR -3253-06849 America/Mendoza Mendoza (MZ)
AS -1416-17042 Pacific/Pago_Pago
AT +4813+01620 Europe/Vienna
AU -3133+15905 Australia/Lord_Howe Lord Howe Island
AU -4253+14719 Australia/Hobart Tasmania
AU -3749+14458 Australia/Melbourne Victoria
AU -3352+15113 Australia/Sydney New South Wales - most locations
AU -3157+14127 Australia/Broken_Hill New South Wales - Yancowinna
AU -2728+15302 Australia/Brisbane Queensland - most locations
AU -2016+14900 Australia/Lindeman Queensland - Holiday Islands
AU -3455+13835 Australia/Adelaide South Australia
AU -1228+13050 Australia/Darwin Northern Territory
AU -3157+11551 Australia/Perth Western Australia
AW +1230-06858 America/Aruba
AZ +4023+04951 Asia/Baku
BA +4352+01825 Europe/Sarajevo
BB +1306-05937 America/Barbados
BD +2343+09025 Asia/Dhaka
BE +5050+00420 Europe/Brussels
BF +1222-00131 Africa/Ouagadougou
BG +4241+02319 Europe/Sofia
BH +2623+05035 Asia/Bahrain
BI -0323+02922 Africa/Bujumbura
BJ +0629+00237 Africa/Porto-Novo
BM +3217-06446 Atlantic/Bermuda
BN +0456+11455 Asia/Brunei
BO -1630-06809 America/La_Paz
BR -0351-03225 America/Noronha Atlantic islands
BR -0127-04829 America/Belem Amapa, E Para
BR -0343-03830 America/Fortaleza NE Brazil (MA, PI, CE, RN, PB)
BR -0803-03454 America/Recife Pernambuco
BR -0712-04812 America/Araguaina Tocantins
BR -0940-03543 America/Maceio Alagoas, Sergipe
BR -1259-03831 America/Bahia Bahia
BR -2332-04637 America/Sao_Paulo S & SE Brazil (GO, DF, MG, ES, RJ, SP, PR, SC, RS)
BR -2027-05437 America/Campo_Grande Mato Grosso do Sul
BR -1535-05605 America/Cuiaba Mato Grosso
BR -0846-06354 America/Porto_Velho W Para, Rondonia
BR +0249-06040 America/Boa_Vista Roraima
BR -0308-06001 America/Manaus E Amazonas
BR -0640-06952 America/Eirunepe W Amazonas
BR -0958-06748 America/Rio_Branco Acre
BS +2505-07721 America/Nassau
BT +2728+08939 Asia/Thimphu
BW -2545+02555 Africa/Gaborone
BY +5354+02734 Europe/Minsk
BZ +1730-08812 America/Belize
CA +4734-05243 America/St_Johns Newfoundland Island
CA +4439-06336 America/Halifax Atlantic Time - Nova Scotia (most places), NB, W Labrador, E Quebec & PEI
CA +4612-05957 America/Glace_Bay Atlantic Time - Nova Scotia - places that did not observe DST 1966-1971
CA +5320-06025 America/Goose_Bay Atlantic Time - E Labrador
CA +4531-07334 America/Montreal Eastern Time - Quebec - most locations
CA +4339-07923 America/Toronto Eastern Time - Ontario - most locations
CA +4901-08816 America/Nipigon Eastern Time - Ontario & Quebec - places that did not observe DST 1967-1973
CA +4823-08915 America/Thunder_Bay Eastern Time - Thunder Bay, Ontario
CA +6608-06544 America/Pangnirtung Eastern Standard Time - Pangnirtung, Nunavut
CA +6344-06828 America/Iqaluit Eastern Standard Time - east Nunavut
CA +6245-09210 America/Rankin_Inlet Eastern Standard Time - central Nunavut
CA +4953-09709 America/Winnipeg Central Time - Manitoba & west Ontario
CA +4843-09429 America/Rainy_River Central Time - Rainy River & Fort Frances, Ontario
CA +6903-10505 America/Cambridge_Bay Central Time - west Nunavut
CA +5024-10439 America/Regina Central Standard Time - Saskatchewan - most locations
CA +5017-10750 America/Swift_Current Central Standard Time - Saskatchewan - midwest
CA +5333-11328 America/Edmonton Mountain Time - Alberta, east British Columbia & west Saskatchewan
CA +6227-11421 America/Yellowknife Mountain Time - central Northwest Territories
CA +6825-11330 America/Inuvik Mountain Time - west Northwest Territories
CA +5946-12014 America/Dawson_Creek Mountain Standard Time - Dawson Creek & Fort Saint John, British Columbia
CA +4916-12307 America/Vancouver Pacific Time - west British Columbia
CA +6043-13503 America/Whitehorse Pacific Time - south Yukon
CA +6404-13925 America/Dawson Pacific Time - north Yukon
CC -1210+09655 Indian/Cocos
CD -0418+01518 Africa/Kinshasa west Dem. Rep. of Congo
CD -1140+02728 Africa/Lubumbashi east Dem. Rep. of Congo
CF +0422+01835 Africa/Bangui
CG -0416+01517 Africa/Brazzaville
CH +4723+00832 Europe/Zurich
CI +0519-00402 Africa/Abidjan
CK -2114-15946 Pacific/Rarotonga
CL -3327-07040 America/Santiago most locations
CL -2710-10927 Pacific/Easter Easter Island & Sala y Gomez
CM +0403+00942 Africa/Douala
CN +3114+12128 Asia/Shanghai east China - Beijing, Guangdong, Shanghai, etc.
CN +4545+12641 Asia/Harbin Heilongjiang
CN +2934+10635 Asia/Chongqing central China - Gansu, Guizhou, Sichuan, Yunnan, etc.
CN +4348+08735 Asia/Urumqi Tibet & most of Xinjiang Uyghur
CN +3929+07559 Asia/Kashgar southwest Xinjiang Uyghur
CO +0436-07405 America/Bogota
CR +0956-08405 America/Costa_Rica
CS +4450+02030 Europe/Belgrade
CU +2308-08222 America/Havana
CV +1455-02331 Atlantic/Cape_Verde
CX -1025+10543 Indian/Christmas
CY +3510+03322 Asia/Nicosia
CZ +5005+01426 Europe/Prague
DE +5230+01322 Europe/Berlin
DJ +1136+04309 Africa/Djibouti
DK +5540+01235 Europe/Copenhagen
DM +1518-06124 America/Dominica
DO +1828-06954 America/Santo_Domingo
DZ +3647+00303 Africa/Algiers
EC -0210-07950 America/Guayaquil mainland
EC -0054-08936 Pacific/Galapagos Galapagos Islands
EE +5925+02445 Europe/Tallinn
EG +3003+03115 Africa/Cairo
EH +2709-01312 Africa/El_Aaiun
ER +1520+03853 Africa/Asmera
ES +4024-00341 Europe/Madrid mainland
ES +3553-00519 Africa/Ceuta Ceuta & Melilla
ES +2806-01524 Atlantic/Canary Canary Islands
ET +0902+03842 Africa/Addis_Ababa
FI +6010+02458 Europe/Helsinki
FJ -1808+17825 Pacific/Fiji
FK -5142-05751 Atlantic/Stanley
FM +0931+13808 Pacific/Yap Yap
FM +0725+15147 Pacific/Truk Truk (Chuuk)
FM +0658+15813 Pacific/Ponape Ponape (Pohnpei)
FM +0519+16259 Pacific/Kosrae Kosrae
FO +6201-00646 Atlantic/Faeroe
FR +4852+00220 Europe/Paris
GA +0023+00927 Africa/Libreville
GB +512830-0001845 Europe/London Great Britain
GB +5435-00555 Europe/Belfast Northern Ireland
GD +1203-06145 America/Grenada
GE +4143+04449 Asia/Tbilisi
GF +0456-05220 America/Cayenne
GH +0533-00013 Africa/Accra
GI +3608-00521 Europe/Gibraltar
GL +6411-05144 America/Godthab most locations
GL +7646-01840 America/Danmarkshavn east coast, north of Scoresbysund
GL +7030-02215 America/Scoresbysund Scoresbysund / Ittoqqortoormiit
GL +7634-06847 America/Thule Thule / Pituffik
GM +1328-01639 Africa/Banjul
GN +0931-01343 Africa/Conakry
GP +1614-06132 America/Guadeloupe
GQ +0345+00847 Africa/Malabo
GR +3758+02343 Europe/Athens
GS -5416-03632 Atlantic/South_Georgia
GT +1438-09031 America/Guatemala
GU +1328+14445 Pacific/Guam
GW +1151-01535 Africa/Bissau
GY +0648-05810 America/Guyana
HK +2217+11409 Asia/Hong_Kong
HN +1406-08713 America/Tegucigalpa
HR +4548+01558 Europe/Zagreb
HT +1832-07220 America/Port-au-Prince
HU +4730+01905 Europe/Budapest
ID -0610+10648 Asia/Jakarta Java & Sumatra
ID -0002+10920 Asia/Pontianak west & central Borneo
ID -0507+11924 Asia/Makassar east & south Borneo, Celebes, Bali, Nusa Tengarra, west Timor
ID -0232+14042 Asia/Jayapura Irian Jaya & the Moluccas
IE +5320-00615 Europe/Dublin
IL +3146+03514 Asia/Jerusalem
IN +2232+08822 Asia/Calcutta
IO -0720+07225 Indian/Chagos
IQ +3321+04425 Asia/Baghdad
IR +3540+05126 Asia/Tehran
IS +6409-02151 Atlantic/Reykjavik
IT +4154+01229 Europe/Rome
JM +1800-07648 America/Jamaica
JO +3157+03556 Asia/Amman
JP +353916+1394441 Asia/Tokyo
KE -0117+03649 Africa/Nairobi
KG +4254+07436 Asia/Bishkek
KH +1133+10455 Asia/Phnom_Penh
KI +0125+17300 Pacific/Tarawa Gilbert Islands
KI -0308-17105 Pacific/Enderbury Phoenix Islands
KI +0152-15720 Pacific/Kiritimati Line Islands
KM -1141+04316 Indian/Comoro
KN +1718-06243 America/St_Kitts
KP +3901+12545 Asia/Pyongyang
KR +3733+12658 Asia/Seoul
KW +2920+04759 Asia/Kuwait
KY +1918-08123 America/Cayman
KZ +4315+07657 Asia/Almaty most locations
KZ +4448+06528 Asia/Qyzylorda Qyzylorda (Kyzylorda, Kzyl-Orda)
KZ +5017+05710 Asia/Aqtobe Aqtobe (Aktobe)
KZ +4431+05016 Asia/Aqtau Atyrau (Atirau, Gur'yev), Mangghystau (Mankistau)
KZ +5113+05121 Asia/Oral West Kazakhstan
LA +1758+10236 Asia/Vientiane
LB +3353+03530 Asia/Beirut
LC +1401-06100 America/St_Lucia
LI +4709+00931 Europe/Vaduz
LK +0656+07951 Asia/Colombo
LR +0618-01047 Africa/Monrovia
LS -2928+02730 Africa/Maseru
LT +5441+02519 Europe/Vilnius
LU +4936+00609 Europe/Luxembourg
LV +5657+02406 Europe/Riga
LY +3254+01311 Africa/Tripoli
MA +3339-00735 Africa/Casablanca
MC +4342+00723 Europe/Monaco
MD +4700+02850 Europe/Chisinau
MG -1855+04731 Indian/Antananarivo
MH +0709+17112 Pacific/Majuro most locations
MH +0905+16720 Pacific/Kwajalein Kwajalein
MK +4159+02126 Europe/Skopje
ML +1239-00800 Africa/Bamako southwest Mali
ML +1446-00301 Africa/Timbuktu northeast Mali
MM +1647+09610 Asia/Rangoon
MN +4755+10653 Asia/Ulaanbaatar most locations
MN +4801+09139 Asia/Hovd Bayan-Olgiy, Govi-Altai, Hovd, Uvs, Zavkhan
MN +4804+11430 Asia/Choibalsan Dornod, Sukhbaatar
MO +2214+11335 Asia/Macau
MP +1512+14545 Pacific/Saipan
MQ +1436-06105 America/Martinique
MR +1806-01557 Africa/Nouakchott
MS +1644-06213 America/Montserrat
MT +3554+01431 Europe/Malta
MU -2010+05730 Indian/Mauritius
MV +0410+07330 Indian/Maldives
MW -1547+03500 Africa/Blantyre
MX +1924-09909 America/Mexico_City Central Time - most locations
MX +2105-08646 America/Cancun Central Time - Quintana Roo
MX +2058-08937 America/Merida Central Time - Campeche, Yucatan
MX +2540-10019 America/Monterrey Central Time - Coahuila, Durango, Nuevo Leon, Tamaulipas
MX +2313-10625 America/Mazatlan Mountain Time - S Baja, Nayarit, Sinaloa
MX +2838-10605 America/Chihuahua Mountain Time - Chihuahua
MX +2904-11058 America/Hermosillo Mountain Standard Time - Sonora
MX +3232-11701 America/Tijuana Pacific Time
MY +0310+10142 Asia/Kuala_Lumpur peninsular Malaysia
MY +0133+11020 Asia/Kuching Sabah & Sarawak
MZ -2558+03235 Africa/Maputo
NA -2234+01706 Africa/Windhoek
NC -2216+16530 Pacific/Noumea
NE +1331+00207 Africa/Niamey
NF -2903+16758 Pacific/Norfolk
NG +0627+00324 Africa/Lagos
NI +1209-08617 America/Managua
NL +5222+00454 Europe/Amsterdam
NO +5955+01045 Europe/Oslo
NP +2743+08519 Asia/Katmandu
NR -0031+16655 Pacific/Nauru
NU -1901+16955 Pacific/Niue
NZ -3652+17446 Pacific/Auckland most locations
NZ -4357-17633 Pacific/Chatham Chatham Islands
OM +2336+05835 Asia/Muscat
PA +0858-07932 America/Panama
PE -1203-07703 America/Lima
PF -1732-14934 Pacific/Tahiti Society Islands
PF -0900-13930 Pacific/Marquesas Marquesas Islands
PF -2308-13457 Pacific/Gambier Gambier Islands
PG -0930+14710 Pacific/Port_Moresby
PH +1435+12100 Asia/Manila
PK +2452+06703 Asia/Karachi
PL +5215+02100 Europe/Warsaw
PM +4703-05620 America/Miquelon
PN -2504-13005 Pacific/Pitcairn
PR +182806-0660622 America/Puerto_Rico
PS +3130+03428 Asia/Gaza
PT +3843-00908 Europe/Lisbon mainland
PT +3238-01654 Atlantic/Madeira Madeira Islands
PT +3744-02540 Atlantic/Azores Azores
PW +0720+13429 Pacific/Palau
PY -2516-05740 America/Asuncion
QA +2517+05132 Asia/Qatar
RE -2052+05528 Indian/Reunion
RO +4426+02606 Europe/Bucharest
RU +5443+02030 Europe/Kaliningrad Moscow-01 - Kaliningrad
RU +5545+03735 Europe/Moscow Moscow+00 - west Russia
RU +5312+05009 Europe/Samara Moscow+01 - Caspian Sea
RU +5651+06036 Asia/Yekaterinburg Moscow+02 - Urals
RU +5500+07324 Asia/Omsk Moscow+03 - west Siberia
RU +5502+08255 Asia/Novosibirsk Moscow+03 - Novosibirsk
RU +5601+09250 Asia/Krasnoyarsk Moscow+04 - Yenisei River
RU +5216+10420 Asia/Irkutsk Moscow+05 - Lake Baikal
RU +6200+12940 Asia/Yakutsk Moscow+06 - Lena River
RU +4310+13156 Asia/Vladivostok Moscow+07 - Amur River
RU +4658+14242 Asia/Sakhalin Moscow+07 - Sakhalin Island
RU +5934+15048 Asia/Magadan Moscow+08 - Magadan
RU +5301+15839 Asia/Kamchatka Moscow+09 - Kamchatka
RU +6445+17729 Asia/Anadyr Moscow+10 - Bering Sea
RW -0157+03004 Africa/Kigali
SA +2438+04643 Asia/Riyadh
SB -0932+16012 Pacific/Guadalcanal
SC -0440+05528 Indian/Mahe
SD +1536+03232 Africa/Khartoum
SE +5920+01803 Europe/Stockholm
SG +0117+10351 Asia/Singapore
SH -1555-00542 Atlantic/St_Helena
SI +4603+01431 Europe/Ljubljana
SJ +7800+01600 Arctic/Longyearbyen Svalbard
SJ +7059-00805 Atlantic/Jan_Mayen Jan Mayen
SK +4809+01707 Europe/Bratislava
SL +0830-01315 Africa/Freetown
SM +4355+01228 Europe/San_Marino
SN +1440-01726 Africa/Dakar
SO +0204+04522 Africa/Mogadishu
SR +0550-05510 America/Paramaribo
ST +0020+00644 Africa/Sao_Tome
SV +1342-08912 America/El_Salvador
SY +3330+03618 Asia/Damascus
SZ -2618+03106 Africa/Mbabane
TC +2128-07108 America/Grand_Turk
TD +1207+01503 Africa/Ndjamena
TF -492110+0701303 Indian/Kerguelen
TG +0608+00113 Africa/Lome
TH +1345+10031 Asia/Bangkok
TJ +3835+06848 Asia/Dushanbe
TK -0922-17114 Pacific/Fakaofo
TL -0833+12535 Asia/Dili
TM +3757+05823 Asia/Ashgabat
TN +3648+01011 Africa/Tunis
TO -2110+17510 Pacific/Tongatapu
TR +4101+02858 Europe/Istanbul
TT +1039-06131 America/Port_of_Spain
TV -0831+17913 Pacific/Funafuti
TW +2503+12130 Asia/Taipei
TZ -0648+03917 Africa/Dar_es_Salaam
UA +5026+03031 Europe/Kiev most locations
UA +4837+02218 Europe/Uzhgorod Ruthenia
UA +4750+03510 Europe/Zaporozhye Zaporozh'ye, E Lugansk
UA +4457+03406 Europe/Simferopol central Crimea
UG +0019+03225 Africa/Kampala
UM +1700-16830 Pacific/Johnston Johnston Atoll
UM +2813-17722 Pacific/Midway Midway Islands
UM +1917+16637 Pacific/Wake Wake Island
US +404251-0740023 America/New_York Eastern Time
US +421953-0830245 America/Detroit Eastern Time - Michigan - most locations
US +381515-0854534 America/Louisville Eastern Time - Kentucky - Louisville area
US +364947-0845057 America/Kentucky/Monticello Eastern Time - Kentucky - Wayne County
US +394606-0860929 America/Indianapolis Eastern Standard Time - Indiana - most locations
US +382232-0862041 America/Indiana/Marengo Eastern Standard Time - Indiana - Crawford County
US +411745-0863730 America/Indiana/Knox Eastern Standard Time - Indiana - Starke County
US +384452-0850402 America/Indiana/Vevay Eastern Standard Time - Indiana - Switzerland County
US +415100-0873900 America/Chicago Central Time
US +450628-0873651 America/Menominee Central Time - Michigan - Wisconsin border
US +470659-1011757 America/North_Dakota/Center Central Time - North Dakota - Oliver County
US +394421-1045903 America/Denver Mountain Time
US +433649-1161209 America/Boise Mountain Time - south Idaho & east Oregon
US +364708-1084111 America/Shiprock Mountain Time - Navajo
US +332654-1120424 America/Phoenix Mountain Standard Time - Arizona
US +340308-1181434 America/Los_Angeles Pacific Time
US +611305-1495401 America/Anchorage Alaska Time
US +581807-1342511 America/Juneau Alaska Time - Alaska panhandle
US +593249-1394338 America/Yakutat Alaska Time - Alaska panhandle neck
US +643004-1652423 America/Nome Alaska Time - west Alaska
US +515248-1763929 America/Adak Aleutian Islands
US +211825-1575130 Pacific/Honolulu Hawaii
UY -3453-05611 America/Montevideo
UZ +3940+06648 Asia/Samarkand west Uzbekistan
UZ +4120+06918 Asia/Tashkent east Uzbekistan
VA +4154+01227 Europe/Vatican
VC +1309-06114 America/St_Vincent
VE +1030-06656 America/Caracas
VG +1827-06437 America/Tortola
VI +1821-06456 America/St_Thomas
VN +1045+10640 Asia/Saigon
VU -1740+16825 Pacific/Efate
WF -1318-17610 Pacific/Wallis
WS -1350-17144 Pacific/Apia
YE +1245+04512 Asia/Aden
YT -1247+04514 Indian/Mayotte
ZA -2615+02800 Africa/Johannesburg
ZM -1525+02817 Africa/Lusaka
ZW -1750+03103 Africa/Harare
src/timezone/difftime.c 0 → 100644
View file @ 6a2b75c2
/*
** This file is in the public domain, so clarified as of
** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)difftime.c 7.9";
#endif /* !defined NOID */
#endif /* !defined lint */
/*LINTLIBRARY*/
#include "private.h"
/*
** Algorithm courtesy Paul Eggert (eggert@twinsun.com).
*/
#ifdef HAVE_LONG_DOUBLE
#define long_double long double
#endif /* defined HAVE_LONG_DOUBLE */
#ifndef HAVE_LONG_DOUBLE
#define long_double double
#endif /* !defined HAVE_LONG_DOUBLE */
double
difftime(time1, time0)
const time_t time1;
const time_t time0;
{
time_t delta;
time_t hibit;
{
time_t tt;
double d;
long_double ld;
if (sizeof tt < sizeof d)
return (double) time1 - (double) time0;
if (sizeof tt < sizeof ld)
return (long_double) time1 - (long_double) time0;
}
if (time1 < time0)
return -difftime(time0, time1);
/*
** As much as possible, avoid loss of precision
** by computing the difference before converting to double.
*/
delta = time1 - time0;
if (delta >= 0)
return delta;
/*
** Repair delta overflow.
*/
hibit = (~ (time_t) 0) << (TYPE_BIT(time_t) - 1);
/*
** The following expression rounds twice, which means
** the result may not be the closest to the true answer.
** For example, suppose time_t is 64-bit signed int,
** long_double is IEEE 754 double with default rounding,
** time1 = 9223372036854775807 and time0 = -1536.
** Then the true difference is 9223372036854777343,
** which rounds to 9223372036854777856
** with a total error of 513.
** But delta overflows to -9223372036854774273,
** which rounds to -9223372036854774784, and correcting
** this by subtracting 2 * (long_double) hibit
** (i.e. by adding 2**64 = 18446744073709551616)
** yields 9223372036854776832, which
** rounds to 9223372036854775808
** with a total error of 1535 instead.
** This problem occurs only with very large differences.
** It's too painful to fix this portably.
** We are not alone in this problem;
** some C compilers round twice when converting
** large unsigned types to small floating types,
** so if time_t is unsigned the "return delta" above
** has the same double-rounding problem with those compilers.
*/
return delta - 2 * (long_double) hibit;
}
src/timezone/ialloc.c 0 → 100644
View file @ 6a2b75c2
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)ialloc.c 8.29";
#endif /* !defined NOID */
#endif /* !defined lint */
/*LINTLIBRARY*/
#include "private.h"
#define nonzero(n) (((n) == 0) ? 1 : (n))
char *
imalloc(n)
const int n;
{
return malloc((size_t) nonzero(n));
}
char *
icalloc(nelem, elsize)
int nelem;
int elsize;
{
if (nelem == 0 || elsize == 0)
nelem = elsize = 1;
return calloc((size_t) nelem, (size_t) elsize);
}
void *
irealloc(pointer, size)
void * const pointer;
const int size;
{
if (pointer == NULL)
return imalloc(size);
return realloc((void *) pointer, (size_t) nonzero(size));
}
char *
icatalloc(old, new)
char * const old;
const char * const new;
{
register char * result;
register int oldsize, newsize;
newsize = (new == NULL) ? 0 : strlen(new);
if (old == NULL)
oldsize = 0;
else if (newsize == 0)
return old;
else oldsize = strlen(old);
if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
if (new != NULL)
(void) strcpy(result + oldsize, new);
return result;
}
char *
icpyalloc(string)
const char * const string;
{
return icatalloc((char *) NULL, string);
}
void
ifree(p)
char * const p;
{
if (p != NULL)
(void) free(p);
}
void
icfree(p)
char * const p;
{
if (p != NULL)
(void) free(p);
}
src/timezone/localtime.c 0 → 100644
View file @ 6a2b75c2
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)localtime.c 7.78";
#endif /* !defined NOID */
#endif /* !defined lint */
/*
** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
** POSIX-style TZ environment variable handling from Guy Harris
** (guy@auspex.com).
*/
/*LINTLIBRARY*/
#include "private.h"
#include "tzfile.h"
#include "fcntl.h"
/*
** SunOS 4.1.1 headers lack O_BINARY.
*/
#ifdef O_BINARY
#define OPEN_MODE (O_RDONLY | O_BINARY)
#endif /* defined O_BINARY */
#ifndef O_BINARY
#define OPEN_MODE O_RDONLY
#endif /* !defined O_BINARY */
#ifndef WILDABBR
/*
** Someone might make incorrect use of a time zone abbreviation:
** 1. They might reference tzname[0] before calling tzset (explicitly
** or implicitly).
** 2. They might reference tzname[1] before calling tzset (explicitly
** or implicitly).
** 3. They might reference tzname[1] after setting to a time zone
** in which Daylight Saving Time is never observed.
** 4. They might reference tzname[0] after setting to a time zone
** in which Standard Time is never observed.
** 5. They might reference tm.TM_ZONE after calling offtime.
** What's best to do in the above cases is open to debate;
** for now, we just set things up so that in any of the five cases
** WILDABBR is used. Another possibility: initialize tzname[0] to the
** string "tzname[0] used before set", and similarly for the other cases.
** And another: initialize tzname[0] to "ERA", with an explanation in the
** manual page of what this "time zone abbreviation" means (doing this so
** that tzname[0] has the "normal" length of three characters).
*/
#define WILDABBR " "
#endif /* !defined WILDABBR */
static char wildabbr[] = "WILDABBR";
static const char gmt[] = "GMT";
/*
** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
** We default to US rules as of 1999-08-17.
** POSIX 1003.1 section 8.1.1 says that the default DST rules are
** implementation dependent; for historical reasons, US rules are a
** common default.
*/
#ifndef TZDEFRULESTRING
#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
#endif /* !defined TZDEFDST */
struct ttinfo { /* time type information */
long tt_gmtoff; /* UTC offset in seconds */
int tt_isdst; /* used to set tm_isdst */
int tt_abbrind; /* abbreviation list index */
int tt_ttisstd; /* TRUE if transition is std time */
int tt_ttisgmt; /* TRUE if transition is UTC */
};
struct lsinfo { /* leap second information */
time_t ls_trans; /* transition time */
long ls_corr; /* correction to apply */
};
#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
#ifdef TZNAME_MAX
#define MY_TZNAME_MAX TZNAME_MAX
#endif /* defined TZNAME_MAX */
#ifndef TZNAME_MAX
#define MY_TZNAME_MAX 255
#endif /* !defined TZNAME_MAX */
struct state {
int leapcnt;
int timecnt;
int typecnt;
int charcnt;
time_t ats[TZ_MAX_TIMES];
unsigned char types[TZ_MAX_TIMES];
struct ttinfo ttis[TZ_MAX_TYPES];
char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
(2 * (MY_TZNAME_MAX + 1)))];
struct lsinfo lsis[TZ_MAX_LEAPS];
};
struct rule {
int r_type; /* type of rule--see below */
int r_day; /* day number of rule */
int r_week; /* week number of rule */
int r_mon; /* month number of rule */
long r_time; /* transition time of rule */
};
#define JULIAN_DAY 0 /* Jn - Julian day */
#define DAY_OF_YEAR 1 /* n - day of year */
#define MONTH_NTH_DAY_OF_WEEK 2 /* Mm.n.d - month, week, day of week */
/*
** Prototypes for static functions.
*/
static long detzcode P((const char * codep));
static const char * getzname P((const char * strp));
static const char * getnum P((const char * strp, int * nump, int min,
int max));
static const char * getsecs P((const char * strp, long * secsp));
static const char * getoffset P((const char * strp, long * offsetp));
static const char * getrule P((const char * strp, struct rule * rulep));
static void gmtload P((struct state * sp));
static void gmtsub P((const time_t * timep, long offset,
struct tm * tmp));
static void localsub P((const time_t * timep, long offset,
struct tm * tmp));
static int increment_overflow P((int * number, int delta));
static int normalize_overflow P((int * tensptr, int * unitsptr,
int base));
static void settzname P((void));
static time_t time1 P((struct tm * tmp,
void(*funcp) P((const time_t *,
long, struct tm *)),
long offset));
static time_t time2 P((struct tm *tmp,
void(*funcp) P((const time_t *,
long, struct tm*)),
long offset, int * okayp));
static time_t time2sub P((struct tm *tmp,
void(*funcp) P((const time_t *,
long, struct tm*)),
long offset, int * okayp, int do_norm_secs));
static void timesub P((const time_t * timep, long offset,
const struct state * sp, struct tm * tmp));
static int tmcomp P((const struct tm * atmp,
const struct tm * btmp));
static time_t transtime P((time_t janfirst, int year,
const struct rule * rulep, long offset));
static int tzload P((const char * name, struct state * sp));
static int tzparse P((const char * name, struct state * sp,
int lastditch));
#ifdef ALL_STATE
static struct state * lclptr;
static struct state * gmtptr;
#endif /* defined ALL_STATE */
#ifndef ALL_STATE
static struct state lclmem;
static struct state gmtmem;
#define lclptr (&lclmem)
#define gmtptr (&gmtmem)
#endif /* State Farm */
#ifndef TZ_STRLEN_MAX
#define TZ_STRLEN_MAX 255
#endif /* !defined TZ_STRLEN_MAX */
static char lcl_TZname[TZ_STRLEN_MAX + 1];
static int lcl_is_set;
static int gmt_is_set;
char * tzname[2] = {
wildabbr,
wildabbr
};
/*
** Section 4.12.3 of X3.159-1989 requires that
** Except for the strftime function, these functions [asctime,
** ctime, gmtime, localtime] return values in one of two static
** objects: a broken-down time structure and an array of char.
** Thanks to Paul Eggert (eggert@twinsun.com) for noting this.
*/
static struct tm tm;
#ifdef USG_COMPAT
time_t timezone = 0;
int daylight = 0;
#endif /* defined USG_COMPAT */
#ifdef ALTZONE
time_t altzone = 0;
#endif /* defined ALTZONE */
static long
detzcode(codep)
const char * const codep;
{
register long result;
register int i;
result = (codep[0] & 0x80) ? ~0L : 0L;
for (i = 0; i < 4; ++i)
result = (result << 8) | (codep[i] & 0xff);
return result;
}
static void
settzname P((void))
{
register struct state * const sp = lclptr;
register int i;
tzname[0] = wildabbr;
tzname[1] = wildabbr;
#ifdef USG_COMPAT
daylight = 0;
timezone = 0;
#endif /* defined USG_COMPAT */
#ifdef ALTZONE
altzone = 0;
#endif /* defined ALTZONE */
#ifdef ALL_STATE
if (sp == NULL) {
tzname[0] = tzname[1] = gmt;
return;
}
#endif /* defined ALL_STATE */
for (i = 0; i < sp->typecnt; ++i) {
register const struct ttinfo * const ttisp = &sp->ttis[i];
tzname[ttisp->tt_isdst] =
&sp->chars[ttisp->tt_abbrind];
#ifdef USG_COMPAT
if (ttisp->tt_isdst)
daylight = 1;
if (i == 0 || !ttisp->tt_isdst)
timezone = -(ttisp->tt_gmtoff);
#endif /* defined USG_COMPAT */
#ifdef ALTZONE
if (i == 0 || ttisp->tt_isdst)
altzone = -(ttisp->tt_gmtoff);
#endif /* defined ALTZONE */
}
/*
** And to get the latest zone names into tzname. . .
*/
for (i = 0; i < sp->timecnt; ++i) {
register const struct ttinfo * const ttisp =
&sp->ttis[
sp->types[i]];
tzname[ttisp->tt_isdst] =
&sp->chars[ttisp->tt_abbrind];
}
}
static int
tzload(name, sp)
register const char * name;
register struct state * const sp;
{
register const char * p;
register int i;
register int fid;
if (name == NULL && (name = TZDEFAULT) == NULL)
return -1;
{
register int doaccess;
/*
** Section 4.9.1 of the C standard says that
** "FILENAME_MAX expands to an integral constant expression
** that is the size needed for an array of char large enough
** to hold the longest file name string that the implementation
** guarantees can be opened."
*/
char fullname[FILENAME_MAX + 1];
if (name[0] == ':')
++name;
doaccess = name[0] == '/';
if (!doaccess) {
if ((p = TZDIR) == NULL)
return -1;
if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
return -1;
(void) strcpy(fullname, p);
(void) strcat(fullname, "/");
(void) strcat(fullname, name);
/*
** Set doaccess if '.' (as in "../") shows up in name.
*/
if (strchr(name, '.') != NULL)
doaccess = TRUE;
name = fullname;
}
if (doaccess && access(name, R_OK) != 0)
return -1;
if ((fid = open(name, OPEN_MODE)) == -1)
return -1;
}
{
struct tzhead * tzhp;
union {
struct tzhead tzhead;
char buf[sizeof *sp + sizeof *tzhp];
} u;
int ttisstdcnt;
int ttisgmtcnt;
i = read(fid, u.buf, sizeof u.buf);
if (close(fid) != 0)
return -1;
ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt);
ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt);
sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt);
sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt);
sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt);
sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt);
p = u.tzhead.tzh_charcnt + sizeof u.tzhead.tzh_charcnt;
if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
return -1;
if (i - (p - u.buf) < sp->timecnt * 4 + /* ats */
sp->timecnt + /* types */
sp->typecnt * (4 + 2) + /* ttinfos */
sp->charcnt + /* chars */
sp->leapcnt * (4 + 4) + /* lsinfos */
ttisstdcnt + /* ttisstds */
ttisgmtcnt) /* ttisgmts */
return -1;
for (i = 0; i < sp->timecnt; ++i) {
sp->ats[i] = detzcode(p);
p += 4;
}
for (i = 0; i < sp->timecnt; ++i) {
sp->types[i] = (unsigned char) *p++;
if (sp->types[i] >= sp->typecnt)
return -1;
}
for (i = 0; i < sp->typecnt; ++i) {
register struct ttinfo * ttisp;
ttisp = &sp->ttis[i];
ttisp->tt_gmtoff = detzcode(p);
p += 4;
ttisp->tt_isdst = (unsigned char) *p++;
if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
return -1;
ttisp->tt_abbrind = (unsigned char) *p++;
if (ttisp->tt_abbrind < 0 ||
ttisp->tt_abbrind > sp->charcnt)
return -1;
}
for (i = 0; i < sp->charcnt; ++i)
sp->chars[i] = *p++;
sp->chars[i] = '\0'; /* ensure '\0' at end */
for (i = 0; i < sp->leapcnt; ++i) {
register struct lsinfo * lsisp;
lsisp = &sp->lsis[i];
lsisp->ls_trans = detzcode(p);
p += 4;
lsisp->ls_corr = detzcode(p);
p += 4;
}
for (i = 0; i < sp->typecnt; ++i) {
register struct ttinfo * ttisp;
ttisp = &sp->ttis[i];
if (ttisstdcnt == 0)
ttisp->tt_ttisstd = FALSE;
else {
ttisp->tt_ttisstd = *p++;
if (ttisp->tt_ttisstd != TRUE &&
ttisp->tt_ttisstd != FALSE)
return -1;
}
}
for (i = 0; i < sp->typecnt; ++i) {
register struct ttinfo * ttisp;
ttisp = &sp->ttis[i];
if (ttisgmtcnt == 0)
ttisp->tt_ttisgmt = FALSE;
else {
ttisp->tt_ttisgmt = *p++;
if (ttisp->tt_ttisgmt != TRUE &&
ttisp->tt_ttisgmt != FALSE)
return -1;
}
}
}
return 0;
}
static const int mon_lengths[2][MONSPERYEAR] = {
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
static const int year_lengths[2] = {
DAYSPERNYEAR, DAYSPERLYEAR
};
/*
** Given a pointer into a time zone string, scan until a character that is not
** a valid character in a zone name is found. Return a pointer to that
** character.
*/
static const char *
getzname(strp)
register const char * strp;
{
register char c;
while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
c != '+')
++strp;
return strp;
}
/*
** Given a pointer into a time zone string, extract a number from that string.
** Check that the number is within a specified range; if it is not, return
** NULL.
** Otherwise, return a pointer to the first character not part of the number.
*/
static const char *
getnum(strp, nump, min, max)
register const char * strp;
int * const nump;
const int min;
const int max;
{
register char c;
register int num;
if (strp == NULL || !is_digit(c = *strp))
return NULL;
num = 0;
do {
num = num * 10 + (c - '0');
if (num > max)
return NULL; /* illegal value */
c = *++strp;
} while (is_digit(c));
if (num < min)
return NULL; /* illegal value */
*nump = num;
return strp;
}
/*
** Given a pointer into a time zone string, extract a number of seconds,
** in hh[:mm[:ss]] form, from the string.
** If any error occurs, return NULL.
** Otherwise, return a pointer to the first character not part of the number
** of seconds.
*/
static const char *
getsecs(strp, secsp)
register const char * strp;
long * const secsp;
{
int num;
/*
** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
** "M10.4.6/26", which does not conform to Posix,
** but which specifies the equivalent of
** ``02:00 on the first Sunday on or after 23 Oct''.
*/
strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
if (strp == NULL)
return NULL;
*secsp = num * (long) SECSPERHOUR;
if (*strp == ':') {
++strp;
strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
if (strp == NULL)
return NULL;
*secsp += num * SECSPERMIN;
if (*strp == ':') {
++strp;
/* `SECSPERMIN' allows for leap seconds. */
strp = getnum(strp, &num, 0, SECSPERMIN);
if (strp == NULL)
return NULL;
*secsp += num;
}
}
return strp;
}
/*
** Given a pointer into a time zone string, extract an offset, in
** [+-]hh[:mm[:ss]] form, from the string.
** If any error occurs, return NULL.
** Otherwise, return a pointer to the first character not part of the time.
*/
static const char *
getoffset(strp, offsetp)
register const char * strp;
long * const offsetp;
{
register int neg = 0;
if (*strp == '-') {
neg = 1;
++strp;
} else if (*strp == '+')
++strp;
strp = getsecs(strp, offsetp);
if (strp == NULL)
return NULL; /* illegal time */
if (neg)
*offsetp = -*offsetp;
return strp;
}
/*
** Given a pointer into a time zone string, extract a rule in the form
** date[/time]. See POSIX section 8 for the format of "date" and "time".
** If a valid rule is not found, return NULL.
** Otherwise, return a pointer to the first character not part of the rule.
*/
static const char *
getrule(strp, rulep)
const char * strp;
register struct rule * const rulep;
{
if (*strp == 'J') {
/*
** Julian day.
*/
rulep->r_type = JULIAN_DAY;
++strp;
strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
} else if (*strp == 'M') {
/*
** Month, week, day.
*/
rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
++strp;
strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
if (strp == NULL)
return NULL;
if (*strp++ != '.')
return NULL;
strp = getnum(strp, &rulep->r_week, 1, 5);
if (strp == NULL)
return NULL;
if (*strp++ != '.')
return NULL;
strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
} else if (is_digit(*strp)) {
/*
** Day of year.
*/
rulep->r_type = DAY_OF_YEAR;
strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
} else return NULL; /* invalid format */
if (strp == NULL)
return NULL;
if (*strp == '/') {
/*
** Time specified.
*/
++strp;
strp = getsecs(strp, &rulep->r_time);
} else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */
return strp;
}
/*
** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
** year, a rule, and the offset from UTC at the time that rule takes effect,
** calculate the Epoch-relative time that rule takes effect.
*/
static time_t
transtime(janfirst, year, rulep, offset)
const time_t janfirst;
const int year;
register const struct rule * const rulep;
const long offset;
{
register int leapyear;
register time_t value;
register int i;
int d, m1, yy0, yy1, yy2, dow;
INITIALIZE(value);
leapyear = isleap(year);
switch (rulep->r_type) {
case JULIAN_DAY:
/*
** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
** years.
** In non-leap years, or if the day number is 59 or less, just
** add SECSPERDAY times the day number-1 to the time of
** January 1, midnight, to get the day.
*/
value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
if (leapyear && rulep->r_day >= 60)
value += SECSPERDAY;
break;
case DAY_OF_YEAR:
/*
** n - day of year.
** Just add SECSPERDAY times the day number to the time of
** January 1, midnight, to get the day.
*/
value = janfirst + rulep->r_day * SECSPERDAY;
break;
case MONTH_NTH_DAY_OF_WEEK:
/*
** Mm.n.d - nth "dth day" of month m.
*/
value = janfirst;
for (i = 0; i < rulep->r_mon - 1; ++i)
value += mon_lengths[leapyear][i] * SECSPERDAY;
/*
** Use Zeller's Congruence to get day-of-week of first day of
** month.
*/
m1 = (rulep->r_mon + 9) % 12 + 1;
yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
yy1 = yy0 / 100;
yy2 = yy0 % 100;
dow = ((26 * m1 - 2) / 10 +
1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
if (dow < 0)
dow += DAYSPERWEEK;
/*
** "dow" is the day-of-week of the first day of the month. Get
** the day-of-month (zero-origin) of the first "dow" day of the
** month.
*/
d = rulep->r_day - dow;
if (d < 0)
d += DAYSPERWEEK;
for (i = 1; i < rulep->r_week; ++i) {
if (d + DAYSPERWEEK >=
mon_lengths[leapyear][rulep->r_mon - 1])
break;
d += DAYSPERWEEK;
}
/*
** "d" is the day-of-month (zero-origin) of the day we want.
*/
value += d * SECSPERDAY;
break;
}
/*
** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
** question. To get the Epoch-relative time of the specified local
** time on that day, add the transition time and the current offset
** from UTC.
*/
return value + rulep->r_time + offset;
}
/*
** Given a POSIX section 8-style TZ string, fill in the rule tables as
** appropriate.
*/
static int
tzparse(name, sp, lastditch)
const char * name;
register struct state * const sp;
const int lastditch;
{
const char * stdname;
const char * dstname;
size_t stdlen;
size_t dstlen;
long stdoffset;
long dstoffset;
register time_t * atp;
register unsigned char * typep;
register char * cp;
register int load_result;
INITIALIZE(dstname);
stdname = name;
if (lastditch) {
stdlen = strlen(name); /* length of standard zone name */
name += stdlen;
if (stdlen >= sizeof sp->chars)
stdlen = (sizeof sp->chars) - 1;
stdoffset = 0;
} else {
name = getzname(name);
stdlen = name - stdname;
if (stdlen < 3)
return -1;
if (*name == '\0')
return -1;
name = getoffset(name, &stdoffset);
if (name == NULL)
return -1;
}
load_result = tzload(TZDEFRULES, sp);
if (load_result != 0)
sp->leapcnt = 0; /* so, we're off a little */
if (*name != '\0') {
dstname = name;
name = getzname(name);
dstlen = name - dstname; /* length of DST zone name */
if (dstlen < 3)
return -1;
if (*name != '\0' && *name != ',' && *name != ';') {
name = getoffset(name, &dstoffset);
if (name == NULL)
return -1;
} else dstoffset = stdoffset - SECSPERHOUR;
if (*name == '\0' && load_result != 0)
name = TZDEFRULESTRING;
if (*name == ',' || *name == ';') {
struct rule start;
struct rule end;
register int year;
register time_t janfirst;
time_t starttime;
time_t endtime;
++name;
if ((name = getrule(name, &start)) == NULL)
return -1;
if (*name++ != ',')
return -1;
if ((name = getrule(name, &end)) == NULL)
return -1;
if (*name != '\0')
return -1;
sp->typecnt = 2; /* standard time and DST */
/*
** Two transitions per year, from EPOCH_YEAR to 2037.
*/
sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1);
if (sp->timecnt > TZ_MAX_TIMES)
return -1;
sp->ttis[0].tt_gmtoff = -dstoffset;
sp->ttis[0].tt_isdst = 1;
sp->ttis[0].tt_abbrind = stdlen + 1;
sp->ttis[1].tt_gmtoff = -stdoffset;
sp->ttis[1].tt_isdst = 0;
sp->ttis[1].tt_abbrind = 0;
atp = sp->ats;
typep = sp->types;
janfirst = 0;
for (year = EPOCH_YEAR; year <= 2037; ++year) {
starttime = transtime(janfirst, year, &start,
stdoffset);
endtime = transtime(janfirst, year, &end,
dstoffset);
if (starttime > endtime) {
*atp++ = endtime;
*typep++ = 1; /* DST ends */
*atp++ = starttime;
*typep++ = 0; /* DST begins */
} else {
*atp++ = starttime;
*typep++ = 0; /* DST begins */
*atp++ = endtime;
*typep++ = 1; /* DST ends */
}
janfirst += year_lengths[isleap(year)] *
SECSPERDAY;
}
} else {
register long theirstdoffset;
register long theirdstoffset;
register long theiroffset;
register int isdst;
register int i;
register int j;
if (*name != '\0')
return -1;
/*
** Initial values of theirstdoffset and theirdstoffset.
*/
theirstdoffset = 0;
for (i = 0; i < sp->timecnt; ++i) {
j = sp->types[i];
if (!sp->ttis[j].tt_isdst) {
theirstdoffset =
-sp->ttis[j].tt_gmtoff;
break;
}
}
theirdstoffset = 0;
for (i = 0; i < sp->timecnt; ++i) {
j = sp->types[i];
if (sp->ttis[j].tt_isdst) {
theirdstoffset =
-sp->ttis[j].tt_gmtoff;
break;
}
}
/*
** Initially we're assumed to be in standard time.
*/
isdst = FALSE;
theiroffset = theirstdoffset;
/*
** Now juggle transition times and types
** tracking offsets as you do.
*/
for (i = 0; i < sp->timecnt; ++i) {
j = sp->types[i];
sp->types[i] = sp->ttis[j].tt_isdst;
if (sp->ttis[j].tt_ttisgmt) {
/* No adjustment to transition time */
} else {
/*
** If summer time is in effect, and the
** transition time was not specified as
** standard time, add the summer time
** offset to the transition time;
** otherwise, add the standard time
** offset to the transition time.
*/
/*
** Transitions from DST to DDST
** will effectively disappear since
** POSIX provides for only one DST
** offset.
*/
if (isdst && !sp->ttis[j].tt_ttisstd) {
sp->ats[i] += dstoffset -
theirdstoffset;
} else {
sp->ats[i] += stdoffset -
theirstdoffset;
}
}
theiroffset = -sp->ttis[j].tt_gmtoff;
if (sp->ttis[j].tt_isdst)
theirdstoffset = theiroffset;
else theirstdoffset = theiroffset;
}
/*
** Finally, fill in ttis.
** ttisstd and ttisgmt need not be handled.
*/
sp->ttis[0].tt_gmtoff = -stdoffset;
sp->ttis[0].tt_isdst = FALSE;
sp->ttis[0].tt_abbrind = 0;
sp->ttis[1].tt_gmtoff = -dstoffset;
sp->ttis[1].tt_isdst = TRUE;
sp->ttis[1].tt_abbrind = stdlen + 1;
sp->typecnt = 2;
}
} else {
dstlen = 0;
sp->typecnt = 1; /* only standard time */
sp->timecnt = 0;
sp->ttis[0].tt_gmtoff = -stdoffset;
sp->ttis[0].tt_isdst = 0;
sp->ttis[0].tt_abbrind = 0;
}
sp->charcnt = stdlen + 1;
if (dstlen != 0)
sp->charcnt += dstlen + 1;
if ((size_t) sp->charcnt > sizeof sp->chars)
return -1;
cp = sp->chars;
(void) strncpy(cp, stdname, stdlen);
cp += stdlen;
*cp++ = '\0';
if (dstlen != 0) {
(void) strncpy(cp, dstname, dstlen);
*(cp + dstlen) = '\0';
}
return 0;
}
static void
gmtload(sp)
struct state * const sp;
{
if (tzload(gmt, sp) != 0)
(void) tzparse(gmt, sp, TRUE);
}
#ifndef STD_INSPIRED
/*
** A non-static declaration of tzsetwall in a system header file
** may cause a warning about this upcoming static declaration...
*/
static
#endif /* !defined STD_INSPIRED */
void
tzsetwall P((void))
{
if (lcl_is_set < 0)
return;
lcl_is_set = -1;
#ifdef ALL_STATE
if (lclptr == NULL) {
lclptr = (struct state *) malloc(sizeof *lclptr);
if (lclptr == NULL) {
settzname(); /* all we can do */
return;
}
}
#endif /* defined ALL_STATE */
if (tzload((char *) NULL, lclptr) != 0)
gmtload(lclptr);
settzname();
}
void
tzset P((void))
{
register const char * name;
name = getenv("TZ");
if (name == NULL) {
tzsetwall();
return;
}
if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
return;
lcl_is_set = strlen(name) < sizeof lcl_TZname;
if (lcl_is_set)
(void) strcpy(lcl_TZname, name);
#ifdef ALL_STATE
if (lclptr == NULL) {
lclptr = (struct state *) malloc(sizeof *lclptr);
if (lclptr == NULL) {
settzname(); /* all we can do */
return;
}
}
#endif /* defined ALL_STATE */
if (*name == '\0') {
/*
** User wants it fast rather than right.
*/
lclptr->leapcnt = 0; /* so, we're off a little */
lclptr->timecnt = 0;
lclptr->typecnt = 0;
lclptr->ttis[0].tt_isdst = 0;
lclptr->ttis[0].tt_gmtoff = 0;
lclptr->ttis[0].tt_abbrind = 0;
(void) strcpy(lclptr->chars, gmt);
} else if (tzload(name, lclptr) != 0)
if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
(void) gmtload(lclptr);
settzname();
}
/*
** The easy way to behave "as if no library function calls" localtime
** is to not call it--so we drop its guts into "localsub", which can be
** freely called. (And no, the PANS doesn't require the above behavior--
** but it *is* desirable.)
**
** The unused offset argument is for the benefit of mktime variants.
*/
/*ARGSUSED*/
static void
localsub(timep, offset, tmp)
const time_t * const timep;
const long offset;
struct tm * const tmp;
{
register struct state * sp;
register const struct ttinfo * ttisp;
register int i;
const time_t t = *timep;
sp = lclptr;
#ifdef ALL_STATE
if (sp == NULL) {
gmtsub(timep, offset, tmp);
return;
}
#endif /* defined ALL_STATE */
if (sp->timecnt == 0 || t < sp->ats[0]) {
i = 0;
while (sp->ttis[i].tt_isdst)
if (++i >= sp->typecnt) {
i = 0;
break;
}
} else {
for (i = 1; i < sp->timecnt; ++i)
if (t < sp->ats[i])
break;
i = sp->types[i - 1];
}
ttisp = &sp->ttis[i];
/*
** To get (wrong) behavior that's compatible with System V Release 2.0
** you'd replace the statement below with
** t += ttisp->tt_gmtoff;
** timesub(&t, 0L, sp, tmp);
*/
timesub(&t, ttisp->tt_gmtoff, sp, tmp);
tmp->tm_isdst = ttisp->tt_isdst;
tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
#ifdef TM_ZONE
tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
#endif /* defined TM_ZONE */
}
struct tm *
localtime(timep)
const time_t * const timep;
{
tzset();
localsub(timep, 0L, &tm);
return &tm;
}
/*
** Re-entrant version of localtime.
*/
struct tm *
localtime_r(timep, tm)
const time_t * const timep;
struct tm * tm;
{
localsub(timep, 0L, tm);
return tm;
}
/*
** gmtsub is to gmtime as localsub is to localtime.
*/
static void
gmtsub(timep, offset, tmp)
const time_t * const timep;
const long offset;
struct tm * const tmp;
{
if (!gmt_is_set) {
gmt_is_set = TRUE;
#ifdef ALL_STATE
gmtptr = (struct state *) malloc(sizeof *gmtptr);
if (gmtptr != NULL)
#endif /* defined ALL_STATE */
gmtload(gmtptr);
}
timesub(timep, offset, gmtptr, tmp);
#ifdef TM_ZONE
/*
** Could get fancy here and deliver something such as
** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
** but this is no time for a treasure hunt.
*/
if (offset != 0)
tmp->TM_ZONE = wildabbr;
else {
#ifdef ALL_STATE
if (gmtptr == NULL)
tmp->TM_ZONE = gmt;
else tmp->TM_ZONE = gmtptr->chars;
#endif /* defined ALL_STATE */
#ifndef ALL_STATE
tmp->TM_ZONE = gmtptr->chars;
#endif /* State Farm */
}
#endif /* defined TM_ZONE */
}
struct tm *
gmtime(timep)
const time_t * const timep;
{
gmtsub(timep, 0L, &tm);
return &tm;
}
/*
* Re-entrant version of gmtime.
*/
struct tm *
gmtime_r(timep, tm)
const time_t * const timep;
struct tm * tm;
{
gmtsub(timep, 0L, tm);
return tm;
}
#ifdef STD_INSPIRED
struct tm *
offtime(timep, offset)
const time_t * const timep;
const long offset;
{
gmtsub(timep, offset, &tm);
return &tm;
}
#endif /* defined STD_INSPIRED */
static void
timesub(timep, offset, sp, tmp)
const time_t * const timep;
const long offset;
register const struct state * const sp;
register struct tm * const tmp;
{
register const struct lsinfo * lp;
register long days;
register long rem;
register int y;
register int yleap;
register const int * ip;
register long corr;
register int hit;
register int i;
corr = 0;
hit = 0;
#ifdef ALL_STATE
i = (sp == NULL) ? 0 : sp->leapcnt;
#endif /* defined ALL_STATE */
#ifndef ALL_STATE
i = sp->leapcnt;
#endif /* State Farm */
while (--i >= 0) {
lp = &sp->lsis[i];
if (*timep >= lp->ls_trans) {
if (*timep == lp->ls_trans) {
hit = ((i == 0 && lp->ls_corr > 0) ||
lp->ls_corr > sp->lsis[i - 1].ls_corr);
if (hit)
while (i > 0 &&
sp->lsis[i].ls_trans ==
sp->lsis[i - 1].ls_trans + 1 &&
sp->lsis[i].ls_corr ==
sp->lsis[i - 1].ls_corr + 1) {
++hit;
--i;
}
}
corr = lp->ls_corr;
break;
}
}
days = *timep / SECSPERDAY;
rem = *timep % SECSPERDAY;
#ifdef mc68k
if (*timep == 0x80000000) {
/*
** A 3B1 muffs the division on the most negative number.
*/
days = -24855;
rem = -11648;
}
#endif /* defined mc68k */
rem += (offset - corr);
while (rem < 0) {
rem += SECSPERDAY;
--days;
}
while (rem >= SECSPERDAY) {
rem -= SECSPERDAY;
++days;
}
tmp->tm_hour = (int) (rem / SECSPERHOUR);
rem = rem % SECSPERHOUR;
tmp->tm_min = (int) (rem / SECSPERMIN);
/*
** A positive leap second requires a special
** representation. This uses "... ??:59:60" et seq.
*/
tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
if (tmp->tm_wday < 0)
tmp->tm_wday += DAYSPERWEEK;
y = EPOCH_YEAR;
#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400)
while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {
register int newy;
newy = y + days / DAYSPERNYEAR;
if (days < 0)
--newy;
days -= (newy - y) * DAYSPERNYEAR +
LEAPS_THRU_END_OF(newy - 1) -
LEAPS_THRU_END_OF(y - 1);
y = newy;
}
tmp->tm_year = y - TM_YEAR_BASE;
tmp->tm_yday = (int) days;
ip = mon_lengths[yleap];
for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
days = days - (long) ip[tmp->tm_mon];
tmp->tm_mday = (int) (days + 1);
tmp->tm_isdst = 0;
#ifdef TM_GMTOFF
tmp->TM_GMTOFF = offset;
#endif /* defined TM_GMTOFF */
}
char *
ctime(timep)
const time_t * const timep;
{
/*
** Section 4.12.3.2 of X3.159-1989 requires that
** The ctime function converts the calendar time pointed to by timer
** to local time in the form of a string. It is equivalent to
** asctime(localtime(timer))
*/
return asctime(localtime(timep));
}
char *
ctime_r(timep, buf)
const time_t * const timep;
char * buf;
{
struct tm tm;
return asctime_r(localtime_r(timep, &tm), buf);
}
/*
** Adapted from code provided by Robert Elz, who writes:
** The "best" way to do mktime I think is based on an idea of Bob
** Kridle's (so its said...) from a long time ago.
** [kridle@xinet.com as of 1996-01-16.]
** It does a binary search of the time_t space. Since time_t's are
** just 32 bits, its a max of 32 iterations (even at 64 bits it
** would still be very reasonable).
*/
#ifndef WRONG
#define WRONG (-1)
#endif /* !defined WRONG */
/*
** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).
*/
static int
increment_overflow(number, delta)
int * number;
int delta;
{
int number0;
number0 = *number;
*number += delta;
return (*number < number0) != (delta < 0);
}
static int
normalize_overflow(tensptr, unitsptr, base)
int * const tensptr;
int * const unitsptr;
const int base;
{
register int tensdelta;
tensdelta = (*unitsptr >= 0) ?
(*unitsptr / base) :
(-1 - (-1 - *unitsptr) / base);
*unitsptr -= tensdelta * base;
return increment_overflow(tensptr, tensdelta);
}
static int
tmcomp(atmp, btmp)
register const struct tm * const atmp;
register const struct tm * const btmp;
{
register int result;
if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
(result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
(result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
(result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
(result = (atmp->tm_min - btmp->tm_min)) == 0)
result = atmp->tm_sec - btmp->tm_sec;
return result;
}
static time_t
time2sub(tmp, funcp, offset, okayp, do_norm_secs)
struct tm * const tmp;
void (* const funcp) P((const time_t*, long, struct tm*));
const long offset;
int * const okayp;
const int do_norm_secs;
{
register const struct state * sp;
register int dir;
register int bits;
register int i, j ;
register int saved_seconds;
time_t newt;
time_t t;
struct tm yourtm, mytm;
*okayp = FALSE;
yourtm = *tmp;
if (do_norm_secs) {
if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
SECSPERMIN))
return WRONG;
}
if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
return WRONG;
if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
return WRONG;
if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR))
return WRONG;
/*
** Turn yourtm.tm_year into an actual year number for now.
** It is converted back to an offset from TM_YEAR_BASE later.
*/
if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE))
return WRONG;
while (yourtm.tm_mday <= 0) {
if (increment_overflow(&yourtm.tm_year, -1))
return WRONG;
i = yourtm.tm_year + (1 < yourtm.tm_mon);
yourtm.tm_mday += year_lengths[isleap(i)];
}
while (yourtm.tm_mday > DAYSPERLYEAR) {
i = yourtm.tm_year + (1 < yourtm.tm_mon);
yourtm.tm_mday -= year_lengths[isleap(i)];
if (increment_overflow(&yourtm.tm_year, 1))
return WRONG;
}
for ( ; ; ) {
i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon];
if (yourtm.tm_mday <= i)
break;
yourtm.tm_mday -= i;
if (++yourtm.tm_mon >= MONSPERYEAR) {
yourtm.tm_mon = 0;
if (increment_overflow(&yourtm.tm_year, 1))
return WRONG;
}
}
if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))
return WRONG;
if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
saved_seconds = 0;
else if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {
/*
** We can't set tm_sec to 0, because that might push the
** time below the minimum representable time.
** Set tm_sec to 59 instead.
** This assumes that the minimum representable time is
** not in the same minute that a leap second was deleted from,
** which is a safer assumption than using 58 would be.
*/
if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
return WRONG;
saved_seconds = yourtm.tm_sec;
yourtm.tm_sec = SECSPERMIN - 1;
} else {
saved_seconds = yourtm.tm_sec;
yourtm.tm_sec = 0;
}
/*
** Divide the search space in half
** (this works whether time_t is signed or unsigned).
*/
bits = TYPE_BIT(time_t) - 1;
/*
** If time_t is signed, then 0 is just above the median,
** assuming two's complement arithmetic.
** If time_t is unsigned, then (1 << bits) is just above the median.
*/
t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits);
for ( ; ; ) {
(*funcp)(&t, offset, &mytm);
dir = tmcomp(&mytm, &yourtm);
if (dir != 0) {
if (bits-- < 0)
return WRONG;
if (bits < 0)
--t; /* may be needed if new t is minimal */
else if (dir > 0)
t -= ((time_t) 1) << bits;
else t += ((time_t) 1) << bits;
continue;
}
if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
break;
/*
** Right time, wrong type.
** Hunt for right time, right type.
** It's okay to guess wrong since the guess
** gets checked.
*/
/*
** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
*/
sp = (const struct state *)
(((void *) funcp == (void *) localsub) ?
lclptr : gmtptr);
#ifdef ALL_STATE
if (sp == NULL)
return WRONG;
#endif /* defined ALL_STATE */
for (i = sp->typecnt - 1; i >= 0; --i) {
if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
continue;
for (j = sp->typecnt - 1; j >= 0; --j) {
if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
continue;
newt = t + sp->ttis[j].tt_gmtoff -
sp->ttis[i].tt_gmtoff;
(*funcp)(&newt, offset, &mytm);
if (tmcomp(&mytm, &yourtm) != 0)
continue;
if (mytm.tm_isdst != yourtm.tm_isdst)
continue;
/*
** We have a match.
*/
t = newt;
goto label;
}
}
return WRONG;
}
label:
newt = t + saved_seconds;
if ((newt < t) != (saved_seconds < 0))
return WRONG;
t = newt;
(*funcp)(&t, offset, tmp);
*okayp = TRUE;
return t;
}
static time_t
time2(tmp, funcp, offset, okayp)
struct tm * const tmp;
void (* const funcp) P((const time_t*, long, struct tm*));
const long offset;
int * const okayp;
{
time_t t;
/*
** First try without normalization of seconds
** (in case tm_sec contains a value associated with a leap second).
** If that fails, try with normalization of seconds.
*/
t = time2sub(tmp, funcp, offset, okayp, FALSE);
return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE);
}
static time_t
time1(tmp, funcp, offset)
struct tm * const tmp;
void (* const funcp) P((const time_t *, long, struct tm *));
const long offset;
{
register time_t t;
register const struct state * sp;
register int samei, otheri;
register int sameind, otherind;
register int i;
register int nseen;
int seen[TZ_MAX_TYPES];
int types[TZ_MAX_TYPES];
int okay;
if (tmp->tm_isdst > 1)
tmp->tm_isdst = 1;
t = time2(tmp, funcp, offset, &okay);
#ifdef PCTS
/*
** PCTS code courtesy Grant Sullivan (grant@osf.org).
*/
if (okay)
return t;
if (tmp->tm_isdst < 0)
tmp->tm_isdst = 0; /* reset to std and try again */
#endif /* defined PCTS */
#ifndef PCTS
if (okay || tmp->tm_isdst < 0)
return t;
#endif /* !defined PCTS */
/*
** We're supposed to assume that somebody took a time of one type
** and did some math on it that yielded a "struct tm" that's bad.
** We try to divine the type they started from and adjust to the
** type they need.
*/
/*
** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
*/
sp = (const struct state *) (((void *) funcp == (void *) localsub) ?
lclptr : gmtptr);
#ifdef ALL_STATE
if (sp == NULL)
return WRONG;
#endif /* defined ALL_STATE */
for (i = 0; i < sp->typecnt; ++i)
seen[i] = FALSE;
nseen = 0;
for (i = sp->timecnt - 1; i >= 0; --i)
if (!seen[sp->types[i]]) {
seen[sp->types[i]] = TRUE;
types[nseen++] = sp->types[i];
}
for (sameind = 0; sameind < nseen; ++sameind) {
samei = types[sameind];
if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
continue;
for (otherind = 0; otherind < nseen; ++otherind) {
otheri = types[otherind];
if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
continue;
tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
sp->ttis[samei].tt_gmtoff;
tmp->tm_isdst = !tmp->tm_isdst;
t = time2(tmp, funcp, offset, &okay);
if (okay)
return t;
tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
sp->ttis[samei].tt_gmtoff;
tmp->tm_isdst = !tmp->tm_isdst;
}
}
return WRONG;
}
time_t
mktime(tmp)
struct tm * const tmp;
{
tzset();
return time1(tmp, localsub, 0L);
}
#ifdef STD_INSPIRED
time_t
timelocal(tmp)
struct tm * const tmp;
{
tmp->tm_isdst = -1; /* in case it wasn't initialized */
return mktime(tmp);
}
time_t
timegm(tmp)
struct tm * const tmp;
{
tmp->tm_isdst = 0;
return time1(tmp, gmtsub, 0L);
}
time_t
timeoff(tmp, offset)
struct tm * const tmp;
const long offset;
{
tmp->tm_isdst = 0;
return time1(tmp, gmtsub, offset);
}
#endif /* defined STD_INSPIRED */
#ifdef CMUCS
/*
** The following is supplied for compatibility with
** previous versions of the CMUCS runtime library.
*/
long
gtime(tmp)
struct tm * const tmp;
{
const time_t t = mktime(tmp);
if (t == WRONG)
return -1;
return t;
}
#endif /* defined CMUCS */
/*
** XXX--is the below the right way to conditionalize??
*/
#ifdef STD_INSPIRED
/*
** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
** is not the case if we are accounting for leap seconds.
** So, we provide the following conversion routines for use
** when exchanging timestamps with POSIX conforming systems.
*/
static long
leapcorr(timep)
time_t * timep;
{
register struct state * sp;
register struct lsinfo * lp;
register int i;
sp = lclptr;
i = sp->leapcnt;
while (--i >= 0) {
lp = &sp->lsis[i];
if (*timep >= lp->ls_trans)
return lp->ls_corr;
}
return 0;
}
time_t
time2posix(t)
time_t t;
{
tzset();
return t - leapcorr(&t);
}
time_t
posix2time(t)
time_t t;
{
time_t x;
time_t y;
tzset();
/*
** For a positive leap second hit, the result
** is not unique. For a negative leap second
** hit, the corresponding time doesn't exist,
** so we return an adjacent second.
*/
x = t + leapcorr(&t);
y = x - leapcorr(&x);
if (y < t) {
do {
x++;
y = x - leapcorr(&x);
} while (y < t);
if (t != y)
return x - 1;
} else if (y > t) {
do {
--x;
y = x - leapcorr(&x);
} while (y > t);
if (t != y)
return x + 1;
}
return x;
}
#endif /* defined STD_INSPIRED */
src/timezone/pgtz.c 0 → 100644
View file @ 6a2b75c2
/*-------------------------------------------------------------------------
*
* pgtz.c
* Timezone Library Integration Functions
*
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/timezone/pgtz.c,v 1.1 2004/04/30 04:09:23 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "pgtz.h"
#include "tzfile.h"
#ifdef WIN32
static char tzdir[MAXPGPATH];
static int done_tzdir = 0;
char *pgwin32_TZDIR(void) {
char *p;
if (done_tzdir)
return tzdir;
if (GetModuleFileName(NULL,tzdir,MAXPGPATH) == 0)
return NULL;
canonicalize_path(tzdir);
if ((p = last_path_separator(tzdir)) == NULL)
return NULL;
else
*p = '\0';
strcat(tzdir,"/../share/timezone");
done_tzdir=1;
return tzdir;
}
#else
#error pgwin32_TZDIR not implemented on non win32 yet!
#endif
src/timezone/pgtz.h 0 → 100644
View file @ 6a2b75c2
#include "postgres.h"
#define NOID
#define HAVE_SYMLINK 0
#define HAVE_SYS_WAIT_H 0
#define TZDIR pgwin32_TZDIR()
char *pgwin32_TZDIR(void);
src/timezone/private.h 0 → 100644
View file @ 6a2b75c2
#ifndef PRIVATE_H
#define PRIVATE_H
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
/*
** This header is for use ONLY with the time conversion code.
** There is no guarantee that it will remain unchanged,
** or that it will remain at all.
** Do NOT copy it to any system include directory.
** Thank you!
*/
/*
** ID
*/
#ifndef lint
#ifndef NOID
static char privatehid[] = "@(#)private.h 7.53";
#endif /* !defined NOID */
#endif /* !defined lint */
/*
** Defaults for preprocessor symbols.
** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
*/
#ifndef HAVE_ADJTIME
#define HAVE_ADJTIME 1
#endif /* !defined HAVE_ADJTIME */
#ifndef HAVE_GETTEXT
#define HAVE_GETTEXT 0
#endif /* !defined HAVE_GETTEXT */
#ifndef HAVE_INCOMPATIBLE_CTIME_R
#define HAVE_INCOMPATIBLE_CTIME_R 0
#endif /* !defined INCOMPATIBLE_CTIME_R */
#ifndef HAVE_SETTIMEOFDAY
#define HAVE_SETTIMEOFDAY 3
#endif /* !defined HAVE_SETTIMEOFDAY */
#ifndef HAVE_STRERROR
#define HAVE_STRERROR 1
#endif /* !defined HAVE_STRERROR */
#ifndef HAVE_SYMLINK
#define HAVE_SYMLINK 1
#endif /* !defined HAVE_SYMLINK */
#ifndef HAVE_SYS_STAT_H
#define HAVE_SYS_STAT_H 1
#endif /* !defined HAVE_SYS_STAT_H */
#ifndef HAVE_SYS_WAIT_H
#define HAVE_SYS_WAIT_H 1
#endif /* !defined HAVE_SYS_WAIT_H */
#ifndef HAVE_UNISTD_H
#define HAVE_UNISTD_H 1
#endif /* !defined HAVE_UNISTD_H */
#ifndef HAVE_UTMPX_H
#define HAVE_UTMPX_H 0
#endif /* !defined HAVE_UTMPX_H */
#ifndef LOCALE_HOME
#define LOCALE_HOME "/usr/lib/locale"
#endif /* !defined LOCALE_HOME */
#if HAVE_INCOMPATIBLE_CTIME_R
#define asctime_r _incompatible_asctime_r
#define ctime_r _incompatible_ctime_r
#endif /* HAVE_INCOMPATIBLE_CTIME_R */
/*
** Nested includes
*/
#include "sys/types.h" /* for time_t */
#include "stdio.h"
#include "errno.h"
#include "string.h"
#include "limits.h" /* for CHAR_BIT */
#include "time.h"
#include "stdlib.h"
#if HAVE_GETTEXT - 0
#include "libintl.h"
#endif /* HAVE_GETTEXT - 0 */
#if HAVE_SYS_WAIT_H - 0
#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
#endif /* HAVE_SYS_WAIT_H - 0 */
#ifndef WIFEXITED
#define WIFEXITED(status) (((status) & 0xff) == 0)
#endif /* !defined WIFEXITED */
#ifndef WEXITSTATUS
#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
#endif /* !defined WEXITSTATUS */
#if HAVE_UNISTD_H - 0
#include "unistd.h" /* for F_OK and R_OK */
#endif /* HAVE_UNISTD_H - 0 */
#if !(HAVE_UNISTD_H - 0)
#ifndef F_OK
#define F_OK 0
#endif /* !defined F_OK */
#ifndef R_OK
#define R_OK 4
#endif /* !defined R_OK */
#endif /* !(HAVE_UNISTD_H - 0) */
/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
#define is_digit(c) ((unsigned)(c) - '0' <= 9)
/*
** Workarounds for compilers/systems.
*/
/*
** SunOS 4.1.1 cc lacks prototypes.
*/
#ifndef P
#ifdef __STDC__
#define P(x) x
#endif /* defined __STDC__ */
#ifndef __STDC__
#define P(x) ()
#endif /* !defined __STDC__ */
#endif /* !defined P */
/*
** SunOS 4.1.1 headers lack EXIT_SUCCESS.
*/
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#endif /* !defined EXIT_SUCCESS */
/*
** SunOS 4.1.1 headers lack EXIT_FAILURE.
*/
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif /* !defined EXIT_FAILURE */
/*
** SunOS 4.1.1 headers lack FILENAME_MAX.
*/
#ifndef FILENAME_MAX
#ifndef MAXPATHLEN
#ifdef unix
#include "sys/param.h"
#endif /* defined unix */
#endif /* !defined MAXPATHLEN */
#ifdef MAXPATHLEN
#define FILENAME_MAX MAXPATHLEN
#endif /* defined MAXPATHLEN */
#ifndef MAXPATHLEN
#define FILENAME_MAX 1024 /* Pure guesswork */
#endif /* !defined MAXPATHLEN */
#endif /* !defined FILENAME_MAX */
/*
** SunOS 4.1.1 libraries lack remove.
*/
#ifndef remove
extern int unlink P((const char * filename));
#define remove unlink
#endif /* !defined remove */
/*
** Some ancient errno.h implementations don't declare errno.
** But some newer errno.h implementations define it as a macro.
** Fix the former without affecting the latter.
*/
#ifndef errno
extern int errno;
#endif /* !defined errno */
/*
** Private function declarations.
*/
char * icalloc P((int nelem, int elsize));
char * icatalloc P((char * old, const char * new));
char * icpyalloc P((const char * string));
char * imalloc P((int n));
void * irealloc P((void * pointer, int size));
void icfree P((char * pointer));
void ifree P((char * pointer));
char * scheck P((const char *string, const char *format));
/*
** Finally, some convenience items.
*/
#ifndef TRUE
#define TRUE 1
#endif /* !defined TRUE */
#ifndef FALSE
#define FALSE 0
#endif /* !defined FALSE */
#ifndef TYPE_BIT
#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
#endif /* !defined TYPE_BIT */
#ifndef TYPE_SIGNED
#define TYPE_SIGNED(type) (((type) -1) < 0)
#endif /* !defined TYPE_SIGNED */
#ifndef INT_STRLEN_MAXIMUM
/*
** 302 / 1000 is log10(2.0) rounded up.
** Subtract one for the sign bit if the type is signed;
** add one for integer division truncation;
** add one more for a minus sign if the type is signed.
*/
#define INT_STRLEN_MAXIMUM(type) \
((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
#endif /* !defined INT_STRLEN_MAXIMUM */
/*
** INITIALIZE(x)
*/
#ifndef GNUC_or_lint
#ifdef lint
#define GNUC_or_lint
#endif /* defined lint */
#ifndef lint
#ifdef __GNUC__
#define GNUC_or_lint
#endif /* defined __GNUC__ */
#endif /* !defined lint */
#endif /* !defined GNUC_or_lint */
#ifndef INITIALIZE
#ifdef GNUC_or_lint
#define INITIALIZE(x) ((x) = 0)
#endif /* defined GNUC_or_lint */
#ifndef GNUC_or_lint
#define INITIALIZE(x)
#endif /* !defined GNUC_or_lint */
#endif /* !defined INITIALIZE */
/*
** For the benefit of GNU folk...
** `_(MSGID)' uses the current locale's message library string for MSGID.
** The default is to use gettext if available, and use MSGID otherwise.
*/
#ifndef _
#if HAVE_GETTEXT - 0
#define _(msgid) gettext(msgid)
#else /* !(HAVE_GETTEXT - 0) */
#define _(msgid) msgid
#endif /* !(HAVE_GETTEXT - 0) */
#endif /* !defined _ */
#ifndef TZ_DOMAIN
#define TZ_DOMAIN "tz"
#endif /* !defined TZ_DOMAIN */
#if HAVE_INCOMPATIBLE_CTIME_R
#undef asctime_r
#undef ctime_r
char *asctime_r P((struct tm const *, char *));
char *ctime_r P((time_t const *, char *));
#endif /* HAVE_INCOMPATIBLE_CTIME_R */
/*
** UNIX was a registered trademark of The Open Group in 2003.
*/
#endif /* !defined PRIVATE_H */
src/timezone/scheck.c 0 → 100644
View file @ 6a2b75c2
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)scheck.c 8.15";
#endif /* !defined lint */
#endif /* !defined NOID */
/*LINTLIBRARY*/
#include "private.h"
char *
scheck(string, format)
const char * const string;
const char * const format;
{
register char * fbuf;
register const char * fp;
register char * tp;
register int c;
register char * result;
char dummy;
static char nada;
result = &nada;
if (string == NULL || format == NULL)
return result;
fbuf = imalloc((int) (2 * strlen(format) + 4));
if (fbuf == NULL)
return result;
fp = format;
tp = fbuf;
while ((*tp++ = c = *fp++) != '\0') {
if (c != '%')
continue;
if (*fp == '%') {
*tp++ = *fp++;
continue;
}
*tp++ = '*';
if (*fp == '*')
++fp;
while (is_digit(*fp))
*tp++ = *fp++;
if (*fp == 'l' || *fp == 'h')
*tp++ = *fp++;
else if (*fp == '[')
do *tp++ = *fp++;
while (*fp != '\0' && *fp != ']');
if ((*tp++ = *fp++) == '\0')
break;
}
*(tp - 1) = '%';
*tp++ = 'c';
*tp = '\0';
if (sscanf(string, fbuf, &dummy) != 1)
result = (char *) format;
ifree(fbuf);
return result;
}
src/timezone/tzfile.h 0 → 100644
View file @ 6a2b75c2
#ifndef TZFILE_H
#define TZFILE_H
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
/*
** This header is for use ONLY with the time conversion code.
** There is no guarantee that it will remain unchanged,
** or that it will remain at all.
** Do NOT copy it to any system include directory.
** Thank you!
*/
/*
** ID
*/
#ifndef lint
#ifndef NOID
static char tzfilehid[] = "@(#)tzfile.h 7.14";
#endif /* !defined NOID */
#endif /* !defined lint */
/*
** Information about time zone files.
*/
#ifndef TZDIR
#define TZDIR "/usr/local/etc/zoneinfo" /* Time zone object file directory */
#endif /* !defined TZDIR */
#ifndef TZDEFAULT
#define TZDEFAULT "localtime"
#endif /* !defined TZDEFAULT */
#ifndef TZDEFRULES
#define TZDEFRULES "posixrules"
#endif /* !defined TZDEFRULES */
/*
** Each file begins with. . .
*/
#define TZ_MAGIC "TZif"
struct tzhead {
char tzh_magic[4]; /* TZ_MAGIC */
char tzh_reserved[16]; /* reserved for future use */
char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
char tzh_leapcnt[4]; /* coded number of leap seconds */
char tzh_timecnt[4]; /* coded number of transition times */
char tzh_typecnt[4]; /* coded number of local time types */
char tzh_charcnt[4]; /* coded number of abbr. chars */
};
/*
** . . .followed by. . .
**
** tzh_timecnt (char [4])s coded transition times a la time(2)
** tzh_timecnt (unsigned char)s types of local time starting at above
** tzh_typecnt repetitions of
** one (char [4]) coded UTC offset in seconds
** one (unsigned char) used to set tm_isdst
** one (unsigned char) that's an abbreviation list index
** tzh_charcnt (char)s '\0'-terminated zone abbreviations
** tzh_leapcnt repetitions of
** one (char [4]) coded leap second transition times
** one (char [4]) total correction after above
** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
** time is standard time, if FALSE,
** transition time is wall clock time
** if absent, transition times are
** assumed to be wall clock time
** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition
** time is UTC, if FALSE,
** transition time is local time
** if absent, transition times are
** assumed to be local time
*/
/*
** In the current implementation, "tzset()" refuses to deal with files that
** exceed any of the limits below.
*/
#ifndef TZ_MAX_TIMES
/*
** The TZ_MAX_TIMES value below is enough to handle a bit more than a
** year's worth of solar time (corrected daily to the nearest second) or
** 138 years of Pacific Presidential Election time
** (where there are three time zone transitions every fourth year).
*/
#define TZ_MAX_TIMES 370
#endif /* !defined TZ_MAX_TIMES */
#ifndef TZ_MAX_TYPES
#ifndef NOSOLAR
#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
#endif /* !defined NOSOLAR */
#ifdef NOSOLAR
/*
** Must be at least 14 for Europe/Riga as of Jan 12 1995,
** as noted by Earl Chew <earl@hpato.aus.hp.com>.
*/
#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
#endif /* !defined NOSOLAR */
#endif /* !defined TZ_MAX_TYPES */
#ifndef TZ_MAX_CHARS
#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
/* (limited by what unsigned chars can hold) */
#endif /* !defined TZ_MAX_CHARS */
#ifndef TZ_MAX_LEAPS
#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
#endif /* !defined TZ_MAX_LEAPS */
#define SECSPERMIN 60
#define MINSPERHOUR 60
#define HOURSPERDAY 24
#define DAYSPERWEEK 7
#define DAYSPERNYEAR 365
#define DAYSPERLYEAR 366
#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
#define MONSPERYEAR 12
#define TM_SUNDAY 0
#define TM_MONDAY 1
#define TM_TUESDAY 2
#define TM_WEDNESDAY 3
#define TM_THURSDAY 4
#define TM_FRIDAY 5
#define TM_SATURDAY 6
#define TM_JANUARY 0
#define TM_FEBRUARY 1
#define TM_MARCH 2
#define TM_APRIL 3
#define TM_MAY 4
#define TM_JUNE 5
#define TM_JULY 6
#define TM_AUGUST 7
#define TM_SEPTEMBER 8
#define TM_OCTOBER 9
#define TM_NOVEMBER 10
#define TM_DECEMBER 11
#define TM_YEAR_BASE 1900
#define EPOCH_YEAR 1970
#define EPOCH_WDAY TM_THURSDAY
/*
** Accurate only for the past couple of centuries;
** that will probably do.
*/
#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
#ifndef USG
/*
** Use of the underscored variants may cause problems if you move your code to
** certain System-V-based systems; for maximum portability, use the
** underscore-free variants. The underscored variants are provided for
** backward compatibility only; they may disappear from future versions of
** this file.
*/
#define SECS_PER_MIN SECSPERMIN
#define MINS_PER_HOUR MINSPERHOUR
#define HOURS_PER_DAY HOURSPERDAY
#define DAYS_PER_WEEK DAYSPERWEEK
#define DAYS_PER_NYEAR DAYSPERNYEAR
#define DAYS_PER_LYEAR DAYSPERLYEAR
#define SECS_PER_HOUR SECSPERHOUR
#define SECS_PER_DAY SECSPERDAY
#define MONS_PER_YEAR MONSPERYEAR
#endif /* !defined USG */
#endif /* !defined TZFILE_H */
src/timezone/zic.c 0 → 100644
View file @ 6a2b75c2
static char elsieid[] = "@(#)zic.c 7.115";
#include "private.h"
#include "locale.h"
#include "tzfile.h"
#if HAVE_SYS_STAT_H
#include "sys/stat.h"
#endif
#ifdef S_IRUSR
#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
#else
#define MKDIR_UMASK 0755
#endif
/*
** On some ancient hosts, predicates like `isspace(C)' are defined
** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
** which says they are defined only if C == ((unsigned char) C) || C == EOF.
** Neither the C Standard nor Posix require that `isascii' exist.
** For portability, we check both ancient and modern requirements.
** If isascii is not defined, the isascii check succeeds trivially.
*/
#include "ctype.h"
#ifndef isascii
#define isascii(x) 1
#endif
struct rule {
const char * r_filename;
int r_linenum;
const char * r_name;
int r_loyear; /* for example, 1986 */
int r_hiyear; /* for example, 1986 */
const char * r_yrtype;
int r_month; /* 0..11 */
int r_dycode; /* see below */
int r_dayofmonth;
int r_wday;
long r_tod; /* time from midnight */
int r_todisstd; /* above is standard time if TRUE */
/* or wall clock time if FALSE */
int r_todisgmt; /* above is GMT if TRUE */
/* or local time if FALSE */
long r_stdoff; /* offset from standard time */
const char * r_abbrvar; /* variable part of abbreviation */
int r_todo; /* a rule to do (used in outzone) */
time_t r_temp; /* used in outzone */
};
/*
** r_dycode r_dayofmonth r_wday
*/
#define DC_DOM 0 /* 1..31 */ /* unused */
#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
struct zone {
const char * z_filename;
int z_linenum;
const char * z_name;
long z_gmtoff;
const char * z_rule;
const char * z_format;
long z_stdoff;
struct rule * z_rules;
int z_nrules;
struct rule z_untilrule;
time_t z_untiltime;
};
extern int getopt P((int argc, char * const argv[],
const char * options));
extern int link P((const char * fromname, const char * toname));
extern char * optarg;
extern int optind;
static void addtt P((time_t starttime, int type));
static int addtype P((long gmtoff, const char * abbr, int isdst,
int ttisstd, int ttisgmt));
static void leapadd P((time_t t, int positive, int rolling, int count));
static void adjleap P((void));
static void associate P((void));
static int ciequal P((const char * ap, const char * bp));
static void convert P((long val, char * buf));
static void dolink P((const char * fromfile, const char * tofile));
static void doabbr P((char * abbr, const char * format,
const char * letters, int isdst));
static void eat P((const char * name, int num));
static void eats P((const char * name, int num,
const char * rname, int rnum));
static long eitol P((int i));
static void error P((const char * message));
static char ** getfields P((char * buf));
static long gethms P((const char * string, const char * errstrng,
int signable));
static void infile P((const char * filename));
static void inleap P((char ** fields, int nfields));
static void inlink P((char ** fields, int nfields));
static void inrule P((char ** fields, int nfields));
static int inzcont P((char ** fields, int nfields));
static int inzone P((char ** fields, int nfields));
static int inzsub P((char ** fields, int nfields, int iscont));
static int itsabbr P((const char * abbr, const char * word));
static int itsdir P((const char * name));
static int lowerit P((int c));
static char * memcheck P((char * tocheck));
static int mkdirs P((char * filename));
static void newabbr P((const char * abbr));
static long oadd P((long t1, long t2));
static void outzone P((const struct zone * zp, int ntzones));
static void puttzcode P((long code, FILE * fp));
static int rcomp P((const void * leftp, const void * rightp));
static time_t rpytime P((const struct rule * rp, int wantedy));
static void rulesub P((struct rule * rp,
const char * loyearp, const char * hiyearp,
const char * typep, const char * monthp,
const char * dayp, const char * timep));
static void setboundaries P((void));
static time_t tadd P((time_t t1, long t2));
static void usage P((void));
static void writezone P((const char * name));
static int yearistype P((int year, const char * type));
#if !(HAVE_STRERROR - 0)
static char * strerror P((int));
#endif /* !(HAVE_STRERROR - 0) */
static int charcnt;
static int errors;
static const char * filename;
static int leapcnt;
static int linenum;
static time_t max_time;
static int max_year;
static int max_year_representable;
static time_t min_time;
static int min_year;
static int min_year_representable;
static int noise;
static const char * rfilename;
static int rlinenum;
static const char * progname;
static int timecnt;
static int typecnt;
/*
** Line codes.
*/
#define LC_RULE 0
#define LC_ZONE 1
#define LC_LINK 2
#define LC_LEAP 3
/*
** Which fields are which on a Zone line.
*/
#define ZF_NAME 1
#define ZF_GMTOFF 2
#define ZF_RULE 3
#define ZF_FORMAT 4
#define ZF_TILYEAR 5
#define ZF_TILMONTH 6
#define ZF_TILDAY 7
#define ZF_TILTIME 8
#define ZONE_MINFIELDS 5
#define ZONE_MAXFIELDS 9
/*
** Which fields are which on a Zone continuation line.
*/
#define ZFC_GMTOFF 0
#define ZFC_RULE 1
#define ZFC_FORMAT 2
#define ZFC_TILYEAR 3
#define ZFC_TILMONTH 4
#define ZFC_TILDAY 5
#define ZFC_TILTIME 6
#define ZONEC_MINFIELDS 3
#define ZONEC_MAXFIELDS 7
/*
** Which files are which on a Rule line.
*/
#define RF_NAME 1
#define RF_LOYEAR 2
#define RF_HIYEAR 3
#define RF_COMMAND 4
#define RF_MONTH 5
#define RF_DAY 6
#define RF_TOD 7
#define RF_STDOFF 8
#define RF_ABBRVAR 9
#define RULE_FIELDS 10
/*
** Which fields are which on a Link line.
*/
#define LF_FROM 1
#define LF_TO 2
#define LINK_FIELDS 3
/*
** Which fields are which on a Leap line.
*/
#define LP_YEAR 1
#define LP_MONTH 2
#define LP_DAY 3
#define LP_TIME 4
#define LP_CORR 5
#define LP_ROLL 6
#define LEAP_FIELDS 7
/*
** Year synonyms.
*/
#define YR_MINIMUM 0
#define YR_MAXIMUM 1
#define YR_ONLY 2
static struct rule * rules;
static int nrules; /* number of rules */
static struct zone * zones;
static int nzones; /* number of zones */
struct link {
const char * l_filename;
int l_linenum;
const char * l_from;
const char * l_to;
};
static struct link * links;
static int nlinks;
struct lookup {
const char * l_word;
const int l_value;
};
static struct lookup const * byword P((const char * string,
const struct lookup * lp));
static struct lookup const line_codes[] = {
{ "Rule", LC_RULE },
{ "Zone", LC_ZONE },
{ "Link", LC_LINK },
{ "Leap", LC_LEAP },
{ NULL, 0}
};
static struct lookup const mon_names[] = {
{ "January", TM_JANUARY },
{ "February", TM_FEBRUARY },
{ "March", TM_MARCH },
{ "April", TM_APRIL },
{ "May", TM_MAY },
{ "June", TM_JUNE },
{ "July", TM_JULY },
{ "August", TM_AUGUST },
{ "September", TM_SEPTEMBER },
{ "October", TM_OCTOBER },
{ "November", TM_NOVEMBER },
{ "December", TM_DECEMBER },
{ NULL, 0 }
};
static struct lookup const wday_names[] = {
{ "Sunday", TM_SUNDAY },
{ "Monday", TM_MONDAY },
{ "Tuesday", TM_TUESDAY },
{ "Wednesday", TM_WEDNESDAY },
{ "Thursday", TM_THURSDAY },
{ "Friday", TM_FRIDAY },
{ "Saturday", TM_SATURDAY },
{ NULL, 0 }
};
static struct lookup const lasts[] = {
{ "last-Sunday", TM_SUNDAY },
{ "last-Monday", TM_MONDAY },
{ "last-Tuesday", TM_TUESDAY },
{ "last-Wednesday", TM_WEDNESDAY },
{ "last-Thursday", TM_THURSDAY },
{ "last-Friday", TM_FRIDAY },
{ "last-Saturday", TM_SATURDAY },
{ NULL, 0 }
};
static struct lookup const begin_years[] = {
{ "minimum", YR_MINIMUM },
{ "maximum", YR_MAXIMUM },
{ NULL, 0 }
};
static struct lookup const end_years[] = {
{ "minimum", YR_MINIMUM },
{ "maximum", YR_MAXIMUM },
{ "only", YR_ONLY },
{ NULL, 0 }
};
static struct lookup const leap_types[] = {
{ "Rolling", TRUE },
{ "Stationary", FALSE },
{ NULL, 0 }
};
static const int len_months[2][MONSPERYEAR] = {
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
static const int len_years[2] = {
DAYSPERNYEAR, DAYSPERLYEAR
};
static struct attype {
time_t at;
unsigned char type;
} attypes[TZ_MAX_TIMES];
static long gmtoffs[TZ_MAX_TYPES];
static char isdsts[TZ_MAX_TYPES];
static unsigned char abbrinds[TZ_MAX_TYPES];
static char ttisstds[TZ_MAX_TYPES];
static char ttisgmts[TZ_MAX_TYPES];
static char chars[TZ_MAX_CHARS];
static time_t trans[TZ_MAX_LEAPS];
static long corr[TZ_MAX_LEAPS];
static char roll[TZ_MAX_LEAPS];
/*
** Memory allocation.
*/
static char *
memcheck(ptr)
char * const ptr;
{
if (ptr == NULL) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
progname, e);
(void) exit(EXIT_FAILURE);
}
return ptr;
}
#define emalloc(size) memcheck(imalloc(size))
#define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
#define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
/*
** Error handling.
*/
#if !(HAVE_STRERROR - 0)
static char *
strerror(errnum)
int errnum;
{
extern char * sys_errlist[];
extern int sys_nerr;
return (errnum > 0 && errnum <= sys_nerr) ?
sys_errlist[errnum] : _("Unknown system error");
}
#endif /* !(HAVE_STRERROR - 0) */
static void
eats(name, num, rname, rnum)
const char * const name;
const int num;
const char * const rname;
const int rnum;
{
filename = name;
linenum = num;
rfilename = rname;
rlinenum = rnum;
}
static void
eat(name, num)
const char * const name;
const int num;
{
eats(name, num, (char *) NULL, -1);
}
static void
error(string)
const char * const string;
{
/*
** Match the format of "cc" to allow sh users to
** zic ... 2>&1 | error -t "*" -v
** on BSD systems.
*/
(void) fprintf(stderr, _("\"%s\", line %d: %s"),
filename, linenum, string);
if (rfilename != NULL)
(void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
rfilename, rlinenum);
(void) fprintf(stderr, "\n");
++errors;
}
static void
warning(string)
const char * const string;
{
char * cp;
cp = ecpyalloc(_("warning: "));
cp = ecatalloc(cp, string);
error(cp);
ifree(cp);
--errors;
}
static void
usage P((void))
{
(void) fprintf(stderr, _("%s: usage is %s [ --version ] [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
progname, progname);
(void) exit(EXIT_FAILURE);
}
static const char * psxrules;
static const char * lcltime;
static const char * directory;
static const char * leapsec;
static const char * yitcommand;
static int sflag = FALSE;
int
main(argc, argv)
int argc;
char * argv[];
{
register int i;
register int j;
register int c;
#ifdef unix
(void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
#endif /* defined unix */
#if HAVE_GETTEXT - 0
(void) setlocale(LC_MESSAGES, "");
#ifdef TZ_DOMAINDIR
(void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
#endif /* defined TEXTDOMAINDIR */
(void) textdomain(TZ_DOMAIN);
#endif /* HAVE_GETTEXT - 0 */
progname = argv[0];
for (i = 1; i < argc; ++i)
if (strcmp(argv[i], "--version") == 0) {
(void) printf("%s\n", elsieid);
(void) exit(EXIT_SUCCESS);
}
while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
switch (c) {
default:
usage();
case 'd':
if (directory == NULL)
directory = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -d option specified\n"),
progname);
(void) exit(EXIT_FAILURE);
}
break;
case 'l':
if (lcltime == NULL)
lcltime = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -l option specified\n"),
progname);
(void) exit(EXIT_FAILURE);
}
break;
case 'p':
if (psxrules == NULL)
psxrules = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -p option specified\n"),
progname);
(void) exit(EXIT_FAILURE);
}
break;
case 'y':
if (yitcommand == NULL)
yitcommand = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -y option specified\n"),
progname);
(void) exit(EXIT_FAILURE);
}
break;
case 'L':
if (leapsec == NULL)
leapsec = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -L option specified\n"),
progname);
(void) exit(EXIT_FAILURE);
}
break;
case 'v':
noise = TRUE;
break;
case 's':
sflag = TRUE;
break;
}
if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
usage(); /* usage message by request */
if (directory == NULL)
directory = TZDIR;
if (yitcommand == NULL)
yitcommand = "yearistype";
setboundaries();
if (optind < argc && leapsec != NULL) {
infile(leapsec);
adjleap();
}
for (i = optind; i < argc; ++i)
infile(argv[i]);
if (errors)
(void) exit(EXIT_FAILURE);
associate();
for (i = 0; i < nzones; i = j) {
/*
** Find the next non-continuation zone entry.
*/
for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
continue;
outzone(&zones[i], j - i);
}
/*
** Make links.
*/
for (i = 0; i < nlinks; ++i) {
eat(links[i].l_filename, links[i].l_linenum);
dolink(links[i].l_from, links[i].l_to);
}
if (lcltime != NULL) {
eat("command line", 1);
dolink(lcltime, TZDEFAULT);
}
if (psxrules != NULL) {
eat("command line", 1);
dolink(psxrules, TZDEFRULES);
}
return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}
static void
dolink(fromfile, tofile)
const char * const fromfile;
const char * const tofile;
{
register char * fromname;
register char * toname;
if (fromfile[0] == '/')
fromname = ecpyalloc(fromfile);
else {
fromname = ecpyalloc(directory);
fromname = ecatalloc(fromname, "/");
fromname = ecatalloc(fromname, fromfile);
}
if (tofile[0] == '/')
toname = ecpyalloc(tofile);
else {
toname = ecpyalloc(directory);
toname = ecatalloc(toname, "/");
toname = ecatalloc(toname, tofile);
}
/*
** We get to be careful here since
** there's a fair chance of root running us.
*/
if (!itsdir(toname))
(void) remove(toname);
if (link(fromname, toname) != 0) {
int result;
if (mkdirs(toname) != 0)
(void) exit(EXIT_FAILURE);
result = link(fromname, toname);
#if (HAVE_SYMLINK - 0)
if (result != 0 &&
access(fromname, F_OK) == 0 &&
!itsdir(fromname)) {
const char *s = tofile;
register char * symlinkcontents = NULL;
while ((s = strchr(s+1, '/')) != NULL)
symlinkcontents = ecatalloc(symlinkcontents, "../");
symlinkcontents = ecatalloc(symlinkcontents, fromfile);
result = symlink(symlinkcontents, toname);
if (result == 0)
warning(_("hard link failed, symbolic link used"));
ifree(symlinkcontents);
}
#endif
if (result != 0) {
const char *e = strerror(errno);
(void) fprintf(stderr,
_("%s: Can't link from %s to %s: %s\n"),
progname, fromname, toname, e);
(void) exit(EXIT_FAILURE);
}
}
ifree(fromname);
ifree(toname);
}
#ifndef INT_MAX
#define INT_MAX ((int) (((unsigned)~0)>>1))
#endif /* !defined INT_MAX */
#ifndef INT_MIN
#define INT_MIN ((int) ~(((unsigned)~0)>>1))
#endif /* !defined INT_MIN */
/*
** The tz file format currently allows at most 32-bit quantities.
** This restriction should be removed before signed 32-bit values
** wrap around in 2038, but unfortunately this will require a
** change to the tz file format.
*/
#define MAX_BITS_IN_FILE 32
#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
static void
setboundaries P((void))
{
if (TYPE_SIGNED(time_t)) {
min_time = ~ (time_t) 0;
min_time <<= TIME_T_BITS_IN_FILE - 1;
max_time = ~ (time_t) 0 - min_time;
if (sflag)
min_time = 0;
} else {
min_time = 0;
max_time = 2 - sflag;
max_time <<= TIME_T_BITS_IN_FILE - 1;
--max_time;
}
min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
min_year_representable = min_year;
max_year_representable = max_year;
}
static int
itsdir(name)
const char * const name;
{
register char * myname;
register int accres;
myname = ecpyalloc(name);
myname = ecatalloc(myname, "/.");
accres = access(myname, F_OK);
ifree(myname);
return accres == 0;
}
/*
** Associate sets of rules with zones.
*/
/*
** Sort by rule name.
*/
static int
rcomp(cp1, cp2)
const void * cp1;
const void * cp2;
{
return strcmp(((const struct rule *) cp1)->r_name,
((const struct rule *) cp2)->r_name);
}
static void
associate P((void))
{
register struct zone * zp;
register struct rule * rp;
register int base, out;
register int i, j;
if (nrules != 0) {
(void) qsort((void *) rules, (size_t) nrules,
(size_t) sizeof *rules, rcomp);
for (i = 0; i < nrules - 1; ++i) {
if (strcmp(rules[i].r_name,
rules[i + 1].r_name) != 0)
continue;
if (strcmp(rules[i].r_filename,
rules[i + 1].r_filename) == 0)
continue;
eat(rules[i].r_filename, rules[i].r_linenum);
warning(_("same rule name in multiple files"));
eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
warning(_("same rule name in multiple files"));
for (j = i + 2; j < nrules; ++j) {
if (strcmp(rules[i].r_name,
rules[j].r_name) != 0)
break;
if (strcmp(rules[i].r_filename,
rules[j].r_filename) == 0)
continue;
if (strcmp(rules[i + 1].r_filename,
rules[j].r_filename) == 0)
continue;
break;
}
i = j - 1;
}
}
for (i = 0; i < nzones; ++i) {
zp = &zones[i];
zp->z_rules = NULL;
zp->z_nrules = 0;
}
for (base = 0; base < nrules; base = out) {
rp = &rules[base];
for (out = base + 1; out < nrules; ++out)
if (strcmp(rp->r_name, rules[out].r_name) != 0)
break;
for (i = 0; i < nzones; ++i) {
zp = &zones[i];
if (strcmp(zp->z_rule, rp->r_name) != 0)
continue;
zp->z_rules = rp;
zp->z_nrules = out - base;
}
}
for (i = 0; i < nzones; ++i) {
zp = &zones[i];
if (zp->z_nrules == 0) {
/*
** Maybe we have a local standard time offset.
*/
eat(zp->z_filename, zp->z_linenum);
zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
TRUE);
/*
** Note, though, that if there's no rule,
** a '%s' in the format is a bad thing.
*/
if (strchr(zp->z_format, '%') != 0)
error(_("%s in ruleless zone"));
}
}
if (errors)
(void) exit(EXIT_FAILURE);
}
static void
infile(name)
const char * name;
{
register FILE * fp;
register char ** fields;
register char * cp;
register const struct lookup * lp;
register int nfields;
register int wantcont;
register int num;
char buf[BUFSIZ];
if (strcmp(name, "-") == 0) {
name = _("standard input");
fp = stdin;
} else if ((fp = fopen(name, "r")) == NULL) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
progname, name, e);
(void) exit(EXIT_FAILURE);
}
wantcont = FALSE;
for (num = 1; ; ++num) {
eat(name, num);
if (fgets(buf, (int) sizeof buf, fp) != buf)
break;
cp = strchr(buf, '\n');
if (cp == NULL) {
error(_("line too long"));
(void) exit(EXIT_FAILURE);
}
*cp = '\0';
fields = getfields(buf);
nfields = 0;
while (fields[nfields] != NULL) {
static char nada;
if (strcmp(fields[nfields], "-") == 0)
fields[nfields] = &nada;
++nfields;
}
if (nfields == 0) {
/* nothing to do */
} else if (wantcont) {
wantcont = inzcont(fields, nfields);
} else {
lp = byword(fields[0], line_codes);
if (lp == NULL)
error(_("input line of unknown type"));
else switch ((int) (lp->l_value)) {
case LC_RULE:
inrule(fields, nfields);
wantcont = FALSE;
break;
case LC_ZONE:
wantcont = inzone(fields, nfields);
break;
case LC_LINK:
inlink(fields, nfields);
wantcont = FALSE;
break;
case LC_LEAP:
if (name != leapsec)
(void) fprintf(stderr,
_("%s: Leap line in non leap seconds file %s\n"),
progname, name);
else inleap(fields, nfields);
wantcont = FALSE;
break;
default: /* "cannot happen" */
(void) fprintf(stderr,
_("%s: panic: Invalid l_value %d\n"),
progname, lp->l_value);
(void) exit(EXIT_FAILURE);
}
}
ifree((char *) fields);
}
if (ferror(fp)) {
(void) fprintf(stderr, _("%s: Error reading %s\n"),
progname, filename);
(void) exit(EXIT_FAILURE);
}
if (fp != stdin && fclose(fp)) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
progname, filename, e);
(void) exit(EXIT_FAILURE);
}
if (wantcont)
error(_("expected continuation line not found"));
}
/*
** Convert a string of one of the forms
** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
** into a number of seconds.
** A null string maps to zero.
** Call error with errstring and return zero on errors.
*/
static long
gethms(string, errstring, signable)
const char * string;
const char * const errstring;
const int signable;
{
int hh, mm, ss, sign;
if (string == NULL || *string == '\0')
return 0;
if (!signable)
sign = 1;
else if (*string == '-') {
sign = -1;
++string;
} else sign = 1;
if (sscanf(string, scheck(string, "%d"), &hh) == 1)
mm = ss = 0;
else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
ss = 0;
else if (sscanf(string, scheck(string, "%d:%d:%d"),
&hh, &mm, &ss) != 3) {
error(errstring);
return 0;
}
if ((hh < 0 || hh >= HOURSPERDAY ||
mm < 0 || mm >= MINSPERHOUR ||
ss < 0 || ss > SECSPERMIN) &&
!(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
error(errstring);
return 0;
}
if (noise && hh == HOURSPERDAY)
warning(_("24:00 not handled by pre-1998 versions of zic"));
return eitol(sign) *
(eitol(hh * MINSPERHOUR + mm) *
eitol(SECSPERMIN) + eitol(ss));
}
static void
inrule(fields, nfields)
register char ** const fields;
const int nfields;
{
static struct rule r;
if (nfields != RULE_FIELDS) {
error(_("wrong number of fields on Rule line"));
return;
}
if (*fields[RF_NAME] == '\0') {
error(_("nameless rule"));
return;
}
r.r_filename = filename;
r.r_linenum = linenum;
r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
r.r_name = ecpyalloc(fields[RF_NAME]);
r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
rules = (struct rule *) (void *) erealloc((char *) rules,
(int) ((nrules + 1) * sizeof *rules));
rules[nrules++] = r;
}
static int
inzone(fields, nfields)
register char ** const fields;
const int nfields;
{
register int i;
static char * buf;
if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
error(_("wrong number of fields on Zone line"));
return FALSE;
}
if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
(void) sprintf(buf,
_("\"Zone %s\" line and -l option are mutually exclusive"),
TZDEFAULT);
error(buf);
return FALSE;
}
if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
(void) sprintf(buf,
_("\"Zone %s\" line and -p option are mutually exclusive"),
TZDEFRULES);
error(buf);
return FALSE;
}
for (i = 0; i < nzones; ++i)
if (zones[i].z_name != NULL &&
strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
buf = erealloc(buf, (int) (132 +
strlen(fields[ZF_NAME]) +
strlen(zones[i].z_filename)));
(void) sprintf(buf,
_("duplicate zone name %s (file \"%s\", line %d)"),
fields[ZF_NAME],
zones[i].z_filename,
zones[i].z_linenum);
error(buf);
return FALSE;
}
return inzsub(fields, nfields, FALSE);
}
static int
inzcont(fields, nfields)
register char ** const fields;
const int nfields;
{
if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
error(_("wrong number of fields on Zone continuation line"));
return FALSE;
}
return inzsub(fields, nfields, TRUE);
}
static int
inzsub(fields, nfields, iscont)
register char ** const fields;
const int nfields;
const int iscont;
{
register char * cp;
static struct zone z;
register int i_gmtoff, i_rule, i_format;
register int i_untilyear, i_untilmonth;
register int i_untilday, i_untiltime;
register int hasuntil;
if (iscont) {
i_gmtoff = ZFC_GMTOFF;
i_rule = ZFC_RULE;
i_format = ZFC_FORMAT;
i_untilyear = ZFC_TILYEAR;
i_untilmonth = ZFC_TILMONTH;
i_untilday = ZFC_TILDAY;
i_untiltime = ZFC_TILTIME;
z.z_name = NULL;
} else {
i_gmtoff = ZF_GMTOFF;
i_rule = ZF_RULE;
i_format = ZF_FORMAT;
i_untilyear = ZF_TILYEAR;
i_untilmonth = ZF_TILMONTH;
i_untilday = ZF_TILDAY;
i_untiltime = ZF_TILTIME;
z.z_name = ecpyalloc(fields[ZF_NAME]);
}
z.z_filename = filename;
z.z_linenum = linenum;
z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
if ((cp = strchr(fields[i_format], '%')) != 0) {
if (*++cp != 's' || strchr(cp, '%') != 0) {
error(_("invalid abbreviation format"));
return FALSE;
}
}
z.z_rule = ecpyalloc(fields[i_rule]);
z.z_format = ecpyalloc(fields[i_format]);
hasuntil = nfields > i_untilyear;
if (hasuntil) {
z.z_untilrule.r_filename = filename;
z.z_untilrule.r_linenum = linenum;
rulesub(&z.z_untilrule,
fields[i_untilyear],
"only",
"",
(nfields > i_untilmonth) ?
fields[i_untilmonth] : "Jan",
(nfields > i_untilday) ? fields[i_untilday] : "1",
(nfields > i_untiltime) ? fields[i_untiltime] : "0");
z.z_untiltime = rpytime(&z.z_untilrule,
z.z_untilrule.r_loyear);
if (iscont && nzones > 0 &&
z.z_untiltime > min_time &&
z.z_untiltime < max_time &&
zones[nzones - 1].z_untiltime > min_time &&
zones[nzones - 1].z_untiltime < max_time &&
zones[nzones - 1].z_untiltime >= z.z_untiltime) {
error(_("Zone continuation line end time is not after end time of previous line"));
return FALSE;
}
}
zones = (struct zone *) (void *) erealloc((char *) zones,
(int) ((nzones + 1) * sizeof *zones));
zones[nzones++] = z;
/*
** If there was an UNTIL field on this line,
** there's more information about the zone on the next line.
*/
return hasuntil;
}
static void
inleap(fields, nfields)
register char ** const fields;
const int nfields;
{
register const char * cp;
register const struct lookup * lp;
register int i, j;
int year, month, day;
long dayoff, tod;
time_t t;
if (nfields != LEAP_FIELDS) {
error(_("wrong number of fields on Leap line"));
return;
}
dayoff = 0;
cp = fields[LP_YEAR];
if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
/*
* Leapin' Lizards!
*/
error(_("invalid leaping year"));
return;
}
j = EPOCH_YEAR;
while (j != year) {
if (year > j) {
i = len_years[isleap(j)];
++j;
} else {
--j;
i = -len_years[isleap(j)];
}
dayoff = oadd(dayoff, eitol(i));
}
if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
error(_("invalid month name"));
return;
}
month = lp->l_value;
j = TM_JANUARY;
while (j != month) {
i = len_months[isleap(year)][j];
dayoff = oadd(dayoff, eitol(i));
++j;
}
cp = fields[LP_DAY];
if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
day <= 0 || day > len_months[isleap(year)][month]) {
error(_("invalid day of month"));
return;
}
dayoff = oadd(dayoff, eitol(day - 1));
if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
error(_("time before zero"));
return;
}
if (dayoff < min_time / SECSPERDAY) {
error(_("time too small"));
return;
}
if (dayoff > max_time / SECSPERDAY) {
error(_("time too large"));
return;
}
t = (time_t) dayoff * SECSPERDAY;
tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
cp = fields[LP_CORR];
{
register int positive;
int count;
if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
positive = FALSE;
count = 1;
} else if (strcmp(cp, "--") == 0) {
positive = FALSE;
count = 2;
} else if (strcmp(cp, "+") == 0) {
positive = TRUE;
count = 1;
} else if (strcmp(cp, "++") == 0) {
positive = TRUE;
count = 2;
} else {
error(_("illegal CORRECTION field on Leap line"));
return;
}
if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
error(_("illegal Rolling/Stationary field on Leap line"));
return;
}
leapadd(tadd(t, tod), positive, lp->l_value, count);
}
}
static void
inlink(fields, nfields)
register char ** const fields;
const int nfields;
{
struct link l;
if (nfields != LINK_FIELDS) {
error(_("wrong number of fields on Link line"));
return;
}
if (*fields[LF_FROM] == '\0') {
error(_("blank FROM field on Link line"));
return;
}
if (*fields[LF_TO] == '\0') {
error(_("blank TO field on Link line"));
return;
}
l.l_filename = filename;
l.l_linenum = linenum;
l.l_from = ecpyalloc(fields[LF_FROM]);
l.l_to = ecpyalloc(fields[LF_TO]);
links = (struct link *) (void *) erealloc((char *) links,
(int) ((nlinks + 1) * sizeof *links));
links[nlinks++] = l;
}
static void
rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
register struct rule * const rp;
const char * const loyearp;
const char * const hiyearp;
const char * const typep;
const char * const monthp;
const char * const dayp;
const char * const timep;
{
register const struct lookup * lp;
register const char * cp;
register char * dp;
register char * ep;
if ((lp = byword(monthp, mon_names)) == NULL) {
error(_("invalid month name"));
return;
}
rp->r_month = lp->l_value;
rp->r_todisstd = FALSE;
rp->r_todisgmt = FALSE;
dp = ecpyalloc(timep);
if (*dp != '\0') {
ep = dp + strlen(dp) - 1;
switch (lowerit(*ep)) {
case 's': /* Standard */
rp->r_todisstd = TRUE;
rp->r_todisgmt = FALSE;
*ep = '\0';
break;
case 'w': /* Wall */
rp->r_todisstd = FALSE;
rp->r_todisgmt = FALSE;
*ep = '\0';
break;
case 'g': /* Greenwich */
case 'u': /* Universal */
case 'z': /* Zulu */
rp->r_todisstd = TRUE;
rp->r_todisgmt = TRUE;
*ep = '\0';
break;
}
}
rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
ifree(dp);
/*
** Year work.
*/
cp = loyearp;
lp = byword(cp, begin_years);
if (lp != NULL) switch ((int) lp->l_value) {
case YR_MINIMUM:
rp->r_loyear = INT_MIN;
break;
case YR_MAXIMUM:
rp->r_loyear = INT_MAX;
break;
default: /* "cannot happen" */
(void) fprintf(stderr,
_("%s: panic: Invalid l_value %d\n"),
progname, lp->l_value);
(void) exit(EXIT_FAILURE);
} else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
error(_("invalid starting year"));
return;
} else if (noise) {
if (rp->r_loyear < min_year_representable)
warning(_("starting year too low to be represented"));
else if (rp->r_loyear > max_year_representable)
warning(_("starting year too high to be represented"));
}
cp = hiyearp;
if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
case YR_MINIMUM:
rp->r_hiyear = INT_MIN;
break;
case YR_MAXIMUM:
rp->r_hiyear = INT_MAX;
break;
case YR_ONLY:
rp->r_hiyear = rp->r_loyear;
break;
default: /* "cannot happen" */
(void) fprintf(stderr,
_("%s: panic: Invalid l_value %d\n"),
progname, lp->l_value);
(void) exit(EXIT_FAILURE);
} else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
error(_("invalid ending year"));
return;
} else if (noise) {
if (rp->r_loyear < min_year_representable)
warning(_("ending year too low to be represented"));
else if (rp->r_loyear > max_year_representable)
warning(_("ending year too high to be represented"));
}
if (rp->r_loyear > rp->r_hiyear) {
error(_("starting year greater than ending year"));
return;
}
if (*typep == '\0')
rp->r_yrtype = NULL;
else {
if (rp->r_loyear == rp->r_hiyear) {
error(_("typed single year"));
return;
}
rp->r_yrtype = ecpyalloc(typep);
}
if (rp->r_loyear < min_year && rp->r_loyear > 0)
min_year = rp->r_loyear;
/*
** Day work.
** Accept things such as:
** 1
** last-Sunday
** Sun<=20
** Sun>=7
*/
dp = ecpyalloc(dayp);
if ((lp = byword(dp, lasts)) != NULL) {
rp->r_dycode = DC_DOWLEQ;
rp->r_wday = lp->l_value;
rp->r_dayofmonth = len_months[1][rp->r_month];
} else {
if ((ep = strchr(dp, '<')) != 0)
rp->r_dycode = DC_DOWLEQ;
else if ((ep = strchr(dp, '>')) != 0)
rp->r_dycode = DC_DOWGEQ;
else {
ep = dp;
rp->r_dycode = DC_DOM;
}
if (rp->r_dycode != DC_DOM) {
*ep++ = 0;
if (*ep++ != '=') {
error(_("invalid day of month"));
ifree(dp);
return;
}
if ((lp = byword(dp, wday_names)) == NULL) {
error(_("invalid weekday name"));
ifree(dp);
return;
}
rp->r_wday = lp->l_value;
}
if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
rp->r_dayofmonth <= 0 ||
(rp->r_dayofmonth > len_months[1][rp->r_month])) {
error(_("invalid day of month"));
ifree(dp);
return;
}
}
ifree(dp);
}
static void
convert(val, buf)
const long val;
char * const buf;
{
register int i;
register long shift;
for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
buf[i] = val >> shift;
}
static void
puttzcode(val, fp)
const long val;
FILE * const fp;
{
char buf[4];
convert(val, buf);
(void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
}
static int
atcomp(avp, bvp)
void * avp;
void * bvp;
{
if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
return -1;
else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
return 1;
else return 0;
}
static void
writezone(name)
const char * const name;
{
register FILE * fp;
register int i, j;
static char * fullname;
static struct tzhead tzh;
time_t ats[TZ_MAX_TIMES];
unsigned char types[TZ_MAX_TIMES];
/*
** Sort.
*/
if (timecnt > 1)
(void) qsort((void *) attypes, (size_t) timecnt,
(size_t) sizeof *attypes, atcomp);
/*
** Optimize.
*/
{
int fromi;
int toi;
toi = 0;
fromi = 0;
while (fromi < timecnt && attypes[fromi].at < min_time)
++fromi;
if (isdsts[0] == 0)
while (fromi < timecnt && attypes[fromi].type == 0)
++fromi; /* handled by default rule */
for ( ; fromi < timecnt; ++fromi) {
if (toi != 0
&& ((attypes[fromi].at
+ gmtoffs[attypes[toi - 1].type])
<= (attypes[toi - 1].at
+ gmtoffs[toi == 1 ? 0
: attypes[toi - 2].type]))) {
attypes[toi - 1].type = attypes[fromi].type;
continue;
}
if (toi == 0 ||
attypes[toi - 1].type != attypes[fromi].type)
attypes[toi++] = attypes[fromi];
}
timecnt = toi;
}
/*
** Transfer.
*/
for (i = 0; i < timecnt; ++i) {
ats[i] = attypes[i].at;
types[i] = attypes[i].type;
}
fullname = erealloc(fullname,
(int) (strlen(directory) + 1 + strlen(name) + 1));
(void) sprintf(fullname, "%s/%s", directory, name);
/*
** Remove old file, if any, to snap links.
*/
if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
progname, fullname, e);
(void) exit(EXIT_FAILURE);
}
if ((fp = fopen(fullname, "wb")) == NULL) {
if (mkdirs(fullname) != 0)
(void) exit(EXIT_FAILURE);
if ((fp = fopen(fullname, "wb")) == NULL) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
progname, fullname, e);
(void) exit(EXIT_FAILURE);
}
}
convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);
convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
convert(eitol(leapcnt), tzh.tzh_leapcnt);
convert(eitol(timecnt), tzh.tzh_timecnt);
convert(eitol(typecnt), tzh.tzh_typecnt);
convert(eitol(charcnt), tzh.tzh_charcnt);
(void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
#define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)
DO(tzh_magic);
DO(tzh_reserved);
DO(tzh_ttisgmtcnt);
DO(tzh_ttisstdcnt);
DO(tzh_leapcnt);
DO(tzh_timecnt);
DO(tzh_typecnt);
DO(tzh_charcnt);
#undef DO
for (i = 0; i < timecnt; ++i) {
j = leapcnt;
while (--j >= 0)
if (ats[i] >= trans[j]) {
ats[i] = tadd(ats[i], corr[j]);
break;
}
puttzcode((long) ats[i], fp);
}
if (timecnt > 0)
(void) fwrite((void *) types, (size_t) sizeof types[0],
(size_t) timecnt, fp);
for (i = 0; i < typecnt; ++i) {
puttzcode((long) gmtoffs[i], fp);
(void) putc(isdsts[i], fp);
(void) putc(abbrinds[i], fp);
}
if (charcnt != 0)
(void) fwrite((void *) chars, (size_t) sizeof chars[0],
(size_t) charcnt, fp);
for (i = 0; i < leapcnt; ++i) {
if (roll[i]) {
if (timecnt == 0 || trans[i] < ats[0]) {
j = 0;
while (isdsts[j])
if (++j >= typecnt) {
j = 0;
break;
}
} else {
j = 1;
while (j < timecnt && trans[i] >= ats[j])
++j;
j = types[j - 1];
}
puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
} else puttzcode((long) trans[i], fp);
puttzcode((long) corr[i], fp);
}
for (i = 0; i < typecnt; ++i)
(void) putc(ttisstds[i], fp);
for (i = 0; i < typecnt; ++i)
(void) putc(ttisgmts[i], fp);
if (ferror(fp) || fclose(fp)) {
(void) fprintf(stderr, _("%s: Error writing %s\n"),
progname, fullname);
(void) exit(EXIT_FAILURE);
}
}
static void
doabbr(abbr, format, letters, isdst)
char * const abbr;
const char * const format;
const char * const letters;
const int isdst;
{
if (strchr(format, '/') == NULL) {
if (letters == NULL)
(void) strcpy(abbr, format);
else (void) sprintf(abbr, format, letters);
} else if (isdst)
(void) strcpy(abbr, strchr(format, '/') + 1);
else {
(void) strcpy(abbr, format);
*strchr(abbr, '/') = '\0';
}
}
static void
outzone(zpfirst, zonecount)
const struct zone * const zpfirst;
const int zonecount;
{
register const struct zone * zp;
register struct rule * rp;
register int i, j;
register int usestart, useuntil;
register time_t starttime, untiltime;
register long gmtoff;
register long stdoff;
register int year;
register long startoff;
register int startttisstd;
register int startttisgmt;
register int type;
char startbuf[BUFSIZ];
INITIALIZE(untiltime);
INITIALIZE(starttime);
/*
** Now. . .finally. . .generate some useful data!
*/
timecnt = 0;
typecnt = 0;
charcnt = 0;
/*
** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
** for noting the need to unconditionally initialize startttisstd.
*/
startttisstd = FALSE;
startttisgmt = FALSE;
for (i = 0; i < zonecount; ++i) {
/*
** A guess that may well be corrected later.
*/
stdoff = 0;
zp = &zpfirst[i];
usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
useuntil = i < (zonecount - 1);
if (useuntil && zp->z_untiltime <= min_time)
continue;
gmtoff = zp->z_gmtoff;
eat(zp->z_filename, zp->z_linenum);
*startbuf = '\0';
startoff = zp->z_gmtoff;
if (zp->z_nrules == 0) {
stdoff = zp->z_stdoff;
doabbr(startbuf, zp->z_format,
(char *) NULL, stdoff != 0);
type = addtype(oadd(zp->z_gmtoff, stdoff),
startbuf, stdoff != 0, startttisstd,
startttisgmt);
if (usestart) {
addtt(starttime, type);
usestart = FALSE;
} else if (stdoff != 0)
addtt(min_time, type);
} else for (year = min_year; year <= max_year; ++year) {
if (useuntil && year > zp->z_untilrule.r_hiyear)
break;
/*
** Mark which rules to do in the current year.
** For those to do, calculate rpytime(rp, year);
*/
for (j = 0; j < zp->z_nrules; ++j) {
rp = &zp->z_rules[j];
eats(zp->z_filename, zp->z_linenum,
rp->r_filename, rp->r_linenum);
rp->r_todo = year >= rp->r_loyear &&
year <= rp->r_hiyear &&
yearistype(year, rp->r_yrtype);
if (rp->r_todo)
rp->r_temp = rpytime(rp, year);
}
for ( ; ; ) {
register int k;
register time_t jtime, ktime;
register long offset;
char buf[BUFSIZ];
INITIALIZE(ktime);
if (useuntil) {
/*
** Turn untiltime into UTC
** assuming the current gmtoff and
** stdoff values.
*/
untiltime = zp->z_untiltime;
if (!zp->z_untilrule.r_todisgmt)
untiltime = tadd(untiltime,
-gmtoff);
if (!zp->z_untilrule.r_todisstd)
untiltime = tadd(untiltime,
-stdoff);
}
/*
** Find the rule (of those to do, if any)
** that takes effect earliest in the year.
*/
k = -1;
for (j = 0; j < zp->z_nrules; ++j) {
rp = &zp->z_rules[j];
if (!rp->r_todo)
continue;
eats(zp->z_filename, zp->z_linenum,
rp->r_filename, rp->r_linenum);
offset = rp->r_todisgmt ? 0 : gmtoff;
if (!rp->r_todisstd)
offset = oadd(offset, stdoff);
jtime = rp->r_temp;
if (jtime == min_time ||
jtime == max_time)
continue;
jtime = tadd(jtime, -offset);
if (k < 0 || jtime < ktime) {
k = j;
ktime = jtime;
}
}
if (k < 0)
break; /* go on to next year */
rp = &zp->z_rules[k];
rp->r_todo = FALSE;
if (useuntil && ktime >= untiltime)
break;
stdoff = rp->r_stdoff;
if (usestart && ktime == starttime)
usestart = FALSE;
if (usestart) {
if (ktime < starttime) {
startoff = oadd(zp->z_gmtoff,
stdoff);
doabbr(startbuf, zp->z_format,
rp->r_abbrvar,
rp->r_stdoff != 0);
continue;
}
if (*startbuf == '\0' &&
startoff == oadd(zp->z_gmtoff,
stdoff)) {
doabbr(startbuf, zp->z_format,
rp->r_abbrvar,
rp->r_stdoff != 0);
}
}
eats(zp->z_filename, zp->z_linenum,
rp->r_filename, rp->r_linenum);
doabbr(buf, zp->z_format, rp->r_abbrvar,
rp->r_stdoff != 0);
offset = oadd(zp->z_gmtoff, rp->r_stdoff);
type = addtype(offset, buf, rp->r_stdoff != 0,
rp->r_todisstd, rp->r_todisgmt);
addtt(ktime, type);
}
}
if (usestart) {
if (*startbuf == '\0' &&
zp->z_format != NULL &&
strchr(zp->z_format, '%') == NULL &&
strchr(zp->z_format, '/') == NULL)
(void) strcpy(startbuf, zp->z_format);
eat(zp->z_filename, zp->z_linenum);
if (*startbuf == '\0')
error(_("can't determine time zone abbreviation to use just after until time"));
else addtt(starttime,
addtype(startoff, startbuf,
startoff != zp->z_gmtoff,
startttisstd,
startttisgmt));
}
/*
** Now we may get to set starttime for the next zone line.
*/
if (useuntil) {
startttisstd = zp->z_untilrule.r_todisstd;
startttisgmt = zp->z_untilrule.r_todisgmt;
starttime = zp->z_untiltime;
if (!startttisstd)
starttime = tadd(starttime, -stdoff);
if (!startttisgmt)
starttime = tadd(starttime, -gmtoff);
}
}
writezone(zpfirst->z_name);
}
static void
addtt(starttime, type)
const time_t starttime;
int type;
{
if (starttime <= min_time ||
(timecnt == 1 && attypes[0].at < min_time)) {
gmtoffs[0] = gmtoffs[type];
isdsts[0] = isdsts[type];
ttisstds[0] = ttisstds[type];
ttisgmts[0] = ttisgmts[type];
if (abbrinds[type] != 0)
(void) strcpy(chars, &chars[abbrinds[type]]);
abbrinds[0] = 0;
charcnt = strlen(chars) + 1;
typecnt = 1;
timecnt = 0;
type = 0;
}
if (timecnt >= TZ_MAX_TIMES) {
error(_("too many transitions?!"));
(void) exit(EXIT_FAILURE);
}
attypes[timecnt].at = starttime;
attypes[timecnt].type = type;
++timecnt;
}
static int
addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
const long gmtoff;
const char * const abbr;
const int isdst;
const int ttisstd;
const int ttisgmt;
{
register int i, j;
if (isdst != TRUE && isdst != FALSE) {
error(_("internal error - addtype called with bad isdst"));
(void) exit(EXIT_FAILURE);
}
if (ttisstd != TRUE && ttisstd != FALSE) {
error(_("internal error - addtype called with bad ttisstd"));
(void) exit(EXIT_FAILURE);
}
if (ttisgmt != TRUE && ttisgmt != FALSE) {
error(_("internal error - addtype called with bad ttisgmt"));
(void) exit(EXIT_FAILURE);
}
/*
** See if there's already an entry for this zone type.
** If so, just return its index.
*/
for (i = 0; i < typecnt; ++i) {
if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
ttisstd == ttisstds[i] &&
ttisgmt == ttisgmts[i])
return i;
}
/*
** There isn't one; add a new one, unless there are already too
** many.
*/
if (typecnt >= TZ_MAX_TYPES) {
error(_("too many local time types"));
(void) exit(EXIT_FAILURE);
}
gmtoffs[i] = gmtoff;
isdsts[i] = isdst;
ttisstds[i] = ttisstd;
ttisgmts[i] = ttisgmt;
for (j = 0; j < charcnt; ++j)
if (strcmp(&chars[j], abbr) == 0)
break;
if (j == charcnt)
newabbr(abbr);
abbrinds[i] = j;
++typecnt;
return i;
}
static void
leapadd(t, positive, rolling, count)
const time_t t;
const int positive;
const int rolling;
int count;
{
register int i, j;
if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
error(_("too many leap seconds"));
(void) exit(EXIT_FAILURE);
}
for (i = 0; i < leapcnt; ++i)
if (t <= trans[i]) {
if (t == trans[i]) {
error(_("repeated leap second moment"));
(void) exit(EXIT_FAILURE);
}
break;
}
do {
for (j = leapcnt; j > i; --j) {
trans[j] = trans[j - 1];
corr[j] = corr[j - 1];
roll[j] = roll[j - 1];
}
trans[i] = t;
corr[i] = positive ? 1L : eitol(-count);
roll[i] = rolling;
++leapcnt;
} while (positive && --count != 0);
}
static void
adjleap P((void))
{
register int i;
register long last = 0;
/*
** propagate leap seconds forward
*/
for (i = 0; i < leapcnt; ++i) {
trans[i] = tadd(trans[i], last);
last = corr[i] += last;
}
}
static int
yearistype(year, type)
const int year;
const char * const type;
{
static char * buf;
int result;
if (type == NULL || *type == '\0')
return TRUE;
buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
(void) sprintf(buf, "%s %d %s", yitcommand, year, type);
result = system(buf);
if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
case 0:
return TRUE;
case 1:
return FALSE;
}
error(_("Wild result from command execution"));
(void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
progname, buf, result);
for ( ; ; )
(void) exit(EXIT_FAILURE);
}
static int
lowerit(a)
int a;
{
a = (unsigned char) a;
return (isascii(a) && isupper(a)) ? tolower(a) : a;
}
static int
ciequal(ap, bp) /* case-insensitive equality */
register const char * ap;
register const char * bp;
{
while (lowerit(*ap) == lowerit(*bp++))
if (*ap++ == '\0')
return TRUE;
return FALSE;
}
static int
itsabbr(abbr, word)
register const char * abbr;
register const char * word;
{
if (lowerit(*abbr) != lowerit(*word))
return FALSE;
++word;
while (*++abbr != '\0')
do {
if (*word == '\0')
return FALSE;
} while (lowerit(*word++) != lowerit(*abbr));
return TRUE;
}
static const struct lookup *
byword(word, table)
register const char * const word;
register const struct lookup * const table;
{
register const struct lookup * foundlp;
register const struct lookup * lp;
if (word == NULL || table == NULL)
return NULL;
/*
** Look for exact match.
*/
for (lp = table; lp->l_word != NULL; ++lp)
if (ciequal(word, lp->l_word))
return lp;
/*
** Look for inexact match.
*/
foundlp = NULL;
for (lp = table; lp->l_word != NULL; ++lp)
if (itsabbr(word, lp->l_word)) {
if (foundlp == NULL)
foundlp = lp;
else return NULL; /* multiple inexact matches */
}
return foundlp;
}
static char **
getfields(cp)
register char * cp;
{
register char * dp;
register char ** array;
register int nsubs;
if (cp == NULL)
return NULL;
array = (char **) (void *)
emalloc((int) ((strlen(cp) + 1) * sizeof *array));
nsubs = 0;
for ( ; ; ) {
while (isascii(*cp) && isspace((unsigned char) *cp))
++cp;
if (*cp == '\0' || *cp == '#')
break;
array[nsubs++] = dp = cp;
do {
if ((*dp = *cp++) != '"')
++dp;
else while ((*dp = *cp++) != '"')
if (*dp != '\0')
++dp;
else error(_("Odd number of quotation marks"));
} while (*cp != '\0' && *cp != '#' &&
(!isascii(*cp) || !isspace((unsigned char) *cp)));
if (isascii(*cp) && isspace((unsigned char) *cp))
++cp;
*dp = '\0';
}
array[nsubs] = NULL;
return array;
}
static long
oadd(t1, t2)
const long t1;
const long t2;
{
register long t;
t = t1 + t2;
if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
error(_("time overflow"));
(void) exit(EXIT_FAILURE);
}
return t;
}
static time_t
tadd(t1, t2)
const time_t t1;
const long t2;
{
register time_t t;
if (t1 == max_time && t2 > 0)
return max_time;
if (t1 == min_time && t2 < 0)
return min_time;
t = t1 + t2;
if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
error(_("time overflow"));
(void) exit(EXIT_FAILURE);
}
return t;
}
/*
** Given a rule, and a year, compute the date - in seconds since January 1,
** 1970, 00:00 LOCAL time - in that year that the rule refers to.
*/
static time_t
rpytime(rp, wantedy)
register const struct rule * const rp;
register const int wantedy;
{
register int y, m, i;
register long dayoff; /* with a nod to Margaret O. */
register time_t t;
if (wantedy == INT_MIN)
return min_time;
if (wantedy == INT_MAX)
return max_time;
dayoff = 0;
m = TM_JANUARY;
y = EPOCH_YEAR;
while (wantedy != y) {
if (wantedy > y) {
i = len_years[isleap(y)];
++y;
} else {
--y;
i = -len_years[isleap(y)];
}
dayoff = oadd(dayoff, eitol(i));
}
while (m != rp->r_month) {
i = len_months[isleap(y)][m];
dayoff = oadd(dayoff, eitol(i));
++m;
}
i = rp->r_dayofmonth;
if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
if (rp->r_dycode == DC_DOWLEQ)
--i;
else {
error(_("use of 2/29 in non leap-year"));
(void) exit(EXIT_FAILURE);
}
}
--i;
dayoff = oadd(dayoff, eitol(i));
if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
register long wday;
#define LDAYSPERWEEK ((long) DAYSPERWEEK)
wday = eitol(EPOCH_WDAY);
/*
** Don't trust mod of negative numbers.
*/
if (dayoff >= 0)
wday = (wday + dayoff) % LDAYSPERWEEK;
else {
wday -= ((-dayoff) % LDAYSPERWEEK);
if (wday < 0)
wday += LDAYSPERWEEK;
}
while (wday != eitol(rp->r_wday))
if (rp->r_dycode == DC_DOWGEQ) {
dayoff = oadd(dayoff, (long) 1);
if (++wday >= LDAYSPERWEEK)
wday = 0;
++i;
} else {
dayoff = oadd(dayoff, (long) -1);
if (--wday < 0)
wday = LDAYSPERWEEK - 1;
--i;
}
if (i < 0 || i >= len_months[isleap(y)][m]) {
error(_("no day in month matches rule"));
(void) exit(EXIT_FAILURE);
}
}
if (dayoff < 0 && !TYPE_SIGNED(time_t))
return min_time;
if (dayoff < min_time / SECSPERDAY)
return min_time;
if (dayoff > max_time / SECSPERDAY)
return max_time;
t = (time_t) dayoff * SECSPERDAY;
return tadd(t, rp->r_tod);
}
static void
newabbr(string)
const char * const string;
{
register int i;
i = strlen(string) + 1;
if (charcnt + i > TZ_MAX_CHARS) {
error(_("too many, or too long, time zone abbreviations"));
(void) exit(EXIT_FAILURE);
}
(void) strcpy(&chars[charcnt], string);
charcnt += eitol(i);
}
static int
mkdirs(argname)
char * const argname;
{
register char * name;
register char * cp;
if (argname == NULL || *argname == '\0')
return 0;
cp = name = ecpyalloc(argname);
while ((cp = strchr(cp + 1, '/')) != 0) {
*cp = '\0';
#ifndef unix
/*
** DOS drive specifier?
*/
if (isalpha((unsigned char) name[0]) &&
name[1] == ':' && name[2] == '\0') {
*cp = '/';
continue;
}
#endif /* !defined unix */
if (!itsdir(name)) {
/*
** It doesn't seem to exist, so we try to create it.
** Creation may fail because of the directory being
** created by some other multiprocessor, so we get
** to do extra checking.
*/
if (mkdir(name, MKDIR_UMASK) != 0) {
const char *e = strerror(errno);
if (errno != EEXIST || !itsdir(name)) {
(void) fprintf(stderr,
_("%s: Can't create directory %s: %s\n"),
progname, name, e);
ifree(name);
return -1;
}
}
}
*cp = '/';
}
ifree(name);
return 0;
}
static long
eitol(i)
const int i;
{
long l;
l = i;
if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
(void) fprintf(stderr,
_("%s: %d did not sign extend correctly\n"),
progname, i);
(void) exit(EXIT_FAILURE);
}
return l;
}
/*
** UNIX was a registered trademark of The Open Group in 2003.
*/
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