Sorry, it's been a while since I gathered together my notes about time zone changes. I finally digested all the contributions to the tz mailing list since September and came up with the following proposed patch. Thanks to everyone who wrote in. Here's a summary of the this patch, and its contributors: Thanks to Gwillim Law for the following, derived from the 1998-09 IATA SSIM: * New South Wales and Victoria will start DST early in 2000 for the Olympics. * Georgia has gone back to UTC+4 with DST. * Cyprus now uses EU DST rules. (Please see further contributions from Law below.) Thanks to Rives McDow for the following info: * Fiji now observes DST. * Quintana Roo has reverted from Eastern to Central Time. * This year, Israel will observe DST from 04-02 02:00 to 09-03 02:00. (Thanks to Ephraim Silverberg for this info.) * Nicaragua also has reverted from Eastern to Central Time. (Thanks to Steffen Thorsen for this info.) * Estonia now uses EU DST rules. (Thanks to Peter Ilieve for this info.) * Fix off-by-one-day typo for Egypt since 1995. * Extensive updates to the Brazilian time zone history, taken from the DSH web site (the official source of time info for Brazil). These were translated by Gwillim Law; thanks! As a result, there are new entries for America/Belem, America/Araguaina, and America/Porto_Velho, all of which have distinct time zone histories since 1970. * Add comments about European time zone decrees and laws in the 1920s, taken from DSH as translated by Gwillim Law. * Updated historical information for Japan. Tokyo time was "CJT" between 1896 and 1937. The Asia/Ishigaki entry was bogus, so it was removed. (Thanks to Hideyuki Suzuki for this info.) * Add comment about H.R.177, which would advance the start of US DST by a month, from April to March. (Thanks to Alex Livingston for this.) * Add comments about Navassa and Great Swan Island; their time zone histories are still unknown. * Update URLs in WWW.htm. =================================================================== RCS file: RCS/WWW.htm,v retrieving revision 1998.8 retrieving revision 1998.8.1.1 diff -u -r1998.8 -r1998.8.1.1 --- WWW.htm 1998/09/24 14:46:08 1998.8 +++ WWW.htm 1999/01/31 08:56:31 1998.8.1.1 @@ -25,9 +25,9 @@ similarly, the data are in <samp>tzdata<var>D</var>.tar.gz</samp>, where <samp><var>D</var></samp> is the data's version. <P> -The <A HREF="ftp://ftp.gnu.org/pub/gnu/GETTING.GNU.SOFTWARE">GNU C Library</A> +The <A HREF="http://www.gnu.org/software/libc/libc.html">GNU C Library</A> has an independent, thread-safe implementation of -a time zone file reader. +a time zone file reader that is compatible with <samp>zoneinfo</samp>. This library is freely available under the GNU Library General Public License, and is widely used in GNU/Linux systems. <P> @@ -53,7 +53,7 @@ <A HREF="http://www.lib.utexas.edu/Libs/PCL/Map_collection/world_maps.html"> Perry-Castañeda Library Map Collection</A> of the University of Texas at Austin has on-line copies of -the 1995 and 1997 editions. +recent editions. The pictorial quality is good, but the maps do not indicate summer time, and parts of the data are a few years out of date. @@ -85,7 +85,8 @@ (1998-09-22) </P> <H2>Arthur David Olson writes:</H2><P> -A good source of information about ISO 8601 seems to be +A good source of information about +<A HREF="http://www.iso.ch/markete/moreend.htm">ISO 8601</A> seems to be <A HREF="http://www.cl.cam.ac.uk/~mgk25/iso-time.html">International Standard Date and Time Notation</A> maintained by Markus Kuhn. =================================================================== RCS file: RCS/asia,v retrieving revision 1998.8 retrieving revision 1998.8.1.1 diff -u -r1998.8 -r1998.8.1.1 --- asia 1998/09/24 14:46:09 1998.8 +++ asia 1999/01/31 08:56:31 1998.8.1.1 @@ -40,6 +40,7 @@ # 5:30 IST India # 7:00 ICT Indochina* # 8:00 CST China +# 9:00 CJT Central Japanese Time (1896/1937)* # 9:00 JST Japan # 9:00 KST Korea # 9:30 CST (Australian) Central Standard Time @@ -246,6 +247,10 @@ # Taiwan +# Shanks (1995) 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 @@ -295,11 +300,13 @@ 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 max - Sep lastSun 0:00 0 - -Rule Cyprus 1981 max - Mar lastSun 0:00 1:00 S +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 + 2:00 Cyprus EE%sT 1998 Sep + 2:00 EU EE%sT +# IATA SSIM (1998-09) has Cyprus using EU rules for the first time. # Georgia # From Paul Eggert <eggert@twinsun.com> (1994-11-19): @@ -321,7 +328,8 @@ 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 - 5:00 - GET + 4:00 1:00 GEST 1997 Mar lastSun + 4:00 E-EurAsia GE%sT # India # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -509,22 +517,21 @@ Rule Zion 1988 only - Sep 3 0:00 0 S # From Ephraim Silverberg <ephraim@cs.huji.ac.il> -# (1997-03-04 and 1998-03-16): +# (1997-03-04, 1998-03-16 and 1998-12-28): # According to the Office of the Secretary General of the Ministry of # Interior, there is NO set rule for Daylight-Savings/Standard time changes. -# Each year they decide anew what havoc to wreak on the country. However, -# there is a "supposed" set of rules which is subject to change depending -# on the party the Minister of Interior, the size of the coalition -# government, the phase of the moon and the direction of the wind. Hence, -# changes may need to be made on a semi-annual basis. One thing is entrenched -# in law, however: that there must be at least 150 days of daylight savings -# time annually. Ever since 1993, the change to daylight savings time is -# on a Thursday night from midnight IST to 1 a.m IDT. The change back to -# standard time is 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. +# 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. Starting in 1999, the change to +# daylight savings time will still be on a Friday morning but from +# 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time +# will now also be on a Friday morning from 2 a.m. IDT to 1 a.m. IST. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Zion 1989 only - Apr 30 0:00 1:00 D @@ -570,19 +577,21 @@ 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 -# From Member of Knesset Avraham Poraz, as quoted in Ha'aretz (1998-09-02): -# [The 1998-09-06 transition is to] serve the interests of a small minority -# of ultra-Orthodox Sephardic Jews who, during the [Hebrew] month of Elul, -# recite Slihot penitential prayers in the early morning hours -# and thus find daylight time inconvenient. +# Due to imminent elections in 1999, there are no dates for the year 2000 +# and beyond. There was a move to legislate the DST rules in Israel, but +# due to the government's fall, it most likely won't be brought to the Knesset +# for first reading before the elections and will probably be altered by the +# newly elected government. -# From Paul Eggert (1998-01-12): -# Here are guesses for rules after 1998. +# From Paul Eggert (1999-01-30): +# Here are guesses for rules after 1999. # 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 1999 max - Mar Fri>=15 0:00 1:00 D -Rule Zion 1999 max - Sep Sun>=1 0:00 0 S +Rule Zion 2000 max - Apr Fri>=1 2:00 1:00 D +Rule Zion 2000 max - Sep Fri>=1 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Jerusalem 2:20:56 - LMT 1880 @@ -609,13 +618,36 @@ # but the only locations using it were US military bases. # We go with Shanks and omit daylight saving in those years for Asia/Tokyo. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Asia/Tokyo 9:19:04 - LMT 1896 +# 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 -Zone Asia/Ishigaki 8:16:36 - LMT 1896 - 8:00 - CST -# There is no information for Marcus. -# Other Japanese possessions are probably like Asia/Tokyo. +# Since 1938, all Japanese possessions have been like Asia/Tokyo. # Jordan # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S @@ -1017,8 +1049,8 @@ 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 (1996-09) says 1997-03-31; (1998-02) says 1998-04-02, -# 1999-03-29, and 1999-09-29; ignore all these claims for now. +# IATA SSIM (1996-09) says 1997-03-31; (1998-02) says 1998-04-02; +# (1998-09) says 1999-03-29 and 1999-09-29; ignore all these claims for now. Rule Syria 1994 max - Apr 1 0:00 1:00 S Rule Syria 1994 max - Oct 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] =================================================================== RCS file: RCS/northamerica,v retrieving revision 1998.8 retrieving revision 1998.8.1.1 diff -u -r1998.8 -r1998.8.1.1 --- northamerica 1998/09/24 14:46:11 1998.8 +++ northamerica 1999/01/31 08:56:31 1998.8.1.1 @@ -59,6 +59,9 @@ 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. @@ -440,8 +443,14 @@ -6:00 US C%sT # Navassa -# uninhabited - +# 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 1917/1997-01 +# 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 @@ -985,6 +994,10 @@ # ``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 Shanks (1991): # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D @@ -1006,7 +1019,8 @@ Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 1:12:42 -6:00 - CST 1996 -6:00 Mexico C%sT 1997 Oct lastSun 2:00 - -5:00 Mexico E%sT + -5:00 Mexico E%sT 1998 Aug 2 2:00 + -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 @@ -1251,6 +1265,8 @@ # 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 @@ -1285,6 +1301,11 @@ -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 @@ -1296,7 +1317,8 @@ -6:00 - CST 1973 May -5:00 - EST 1975 Feb 16 -6:00 Nic C%sT 1993 Jan 1 4:00 - -5:00 - EST + -5:00 - EST 1998 Dec + -6:00 - CST # Panama # Zone NAME GMTOFF RULES FORMAT [UNTIL] =================================================================== RCS file: RCS/australasia,v retrieving revision 1998.8 retrieving revision 1998.8.1.1 diff -u -r1998.8 -r1998.8.1.1 --- australasia 1998/09/24 14:46:09 1998.8 +++ australasia 1999/01/31 08:56:31 1998.8.1.1 @@ -110,9 +110,11 @@ Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 - Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 - Rule AV 1986 only - Oct 19 2:00s 1:00 - -Rule AV 1987 max - Oct lastSun 2:00s 1:00 - +Rule AV 1987 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 26 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 - EST 1917 Jan 1 0:01 @@ -128,9 +130,11 @@ 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 max - Oct lastSun 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 26 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 - EST 1917 Jan 1 0:01 @@ -197,9 +201,12 @@ Zone Indian/Cocos 6:30 - CCT # Cocos Islands Time # Fiji +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Fiji 1998 max - Nov Sun>=1 2:00 1:00 S +Rule Fiji 1999 max - Feb lastSun 3:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Fiji 11:53:40 - LMT 1915 Oct 26 # Suva - 12:00 - FJT # Fiji Time + 12:00 Fiji FJ%sT # Fiji Time # French Polynesia # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -804,6 +811,10 @@ # This is going to take some time to be negotiated, because the plan is to do # this in multiple states due to soccer games (which are not just in Sydney). +# 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 26, presumably due to the Sydney Olympics. + # Yancowinna # From John Basser (1989-01-04): @@ -889,6 +900,18 @@ # enacted an ordinance standardizing the islands on +12:00. # Perhaps it didn't take. We go with Shanks's more precise date in 1915. +# 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 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. + # Johnston # Johnston data is from usno1995. =================================================================== RCS file: RCS/europe,v retrieving revision 1999.1 retrieving revision 1999.1.1.1 diff -u -r1999.1 -r1999.1.1.1 --- europe 1999/01/19 21:20:16 1999.1 +++ europe 1999/01/31 08:56:31 1999.1.1.1 @@ -18,9 +18,17 @@ # 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. +# 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. +# +# Brazil's Departamento Servico da Hora (DSH), +# <a href="http://pcdsh01.on.br/HISTHV.htm"> +# History of Summer Time +# </a> (1998-09-21, in Portuguese) + # # I invented the abbreviations marked `*' in the following table; # the rest are from earlier versions of this file, or from other sources. @@ -115,9 +123,10 @@ # transition date for London, namely 1847 Sep 22. We don't know as much # about Dublin, so we use 1880 Aug 2, the legal transition time. -# From Paul Eggert (1996-06-12): +# From Paul Eggert (1999-01-30): # Summer Time was first seriously proposed by William Willett (1857-1915), -# a London builder who circulated a pamphlet ``Waste of Daylight'' (1907) +# a London builder and member of the Royal Astronomical Society +# who circulated a pamphlet ``Waste of Daylight'' (1907) # that proposed advancing clocks 20 minutes on each of four Sundays in April, # and retarding them by the same amount on four Sundays in September. # A bill was drafted in 1909 and introduced in Parliament several times, @@ -1100,6 +1109,10 @@ Rule Belgium 1923 only - Apr 21 23:00s 1:00 S Rule Belgium 1924 only - Mar 29 23:00s 1:00 S Rule Belgium 1925 only - Apr 4 23:00s 1:00 S +# DSH writes that a royal decree of 1926-02-22 specified the Sun following 3rd +# Sat in Apr (except if it's Easter, in which case it's one Sunday earlier), +# to Sun following 1st Sat in Oct, and that a royal decree of 1928-09-15 +# changed the transition times to 02:00 GMT. Rule Belgium 1926 only - Apr 17 23:00s 1:00 S Rule Belgium 1927 only - Apr 9 23:00s 1:00 S Rule Belgium 1928 only - Apr 14 23:00s 1:00 S @@ -1240,6 +1253,18 @@ # A discussion is running about the summer time efficiency and effect on # human physiology. It seems that Estonia maybe will not change to # summer time next spring.'' + +# From Peter Ilieve <peter@aldie.co.uk> (1998-11-04), heavily edited: +# <a href="http://trip.rk.ee/cgi-bin/thw?${BASE}=akt&${OOHTML}=rtd&TA=1998&TO=1&AN=1390"> +# The 1998-09-22 Estonian time law +# </a> +# refers to the Eighth Directive and cites the association agreement between +# the EU and Estonia, ratified by the Estonian law (RT II 1995, 22--27, 120). +# +# I also asked [my relative] whether they use any standard abbreviation +# for their standard and summer times. He says no, they use "suveaeg" +# (summer time) and "talveaeg" (winter time). + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time @@ -1250,7 +1275,7 @@ 1:00 C-Eur CE%sT 1944 Sep 22 3:00 Russia MSK/MSD 1989 Mar 26 2:00s 2:00 1:00 EEST 1989 Sep 24 2:00s - 2:00 C-Eur EE%sT 1998 + 2:00 C-Eur EE%sT 1998 Sep 22 2:00 EU EE%sT # Finland @@ -1291,6 +1316,9 @@ Rule France 1921 only - Mar 14 23:00s 1:00 S Rule France 1921 only - Oct 25 23:00s 0 - Rule France 1922 only - Mar 25 23:00s 1:00 S +# DSH writes that a law of 1923-05-24 specified 3rd Sat in Apr at 23:00 to 1st +# Sat in Oct at 24:00; and that in 1930, because of Easter, the transitions +# were Apr 12 and Oct 5. Go with Shanks. Rule France 1922 1938 - Oct Sat>=1 23:00s 0 - Rule France 1923 only - May 26 23:00s 1:00 S Rule France 1924 only - Mar 29 23:00s 1:00 S @@ -1793,10 +1821,8 @@ # Whitman gives 1916 May 21 - 1916 Oct 21; go with Shanks. Rule Norway 1916 only - May 22 1:00 1:00 S Rule Norway 1916 only - Sep 30 0:00 0 - -# Shanks omits the following transition; go with Whitman. -Rule Norway 1935 only - Aug 11 0:00 1:00 S -# Whitman says DST observed until 1942 Nov 1, then 1943 Mar 29 - Oct 4, -# 1944 Apr 3 - Oct 2, and 1945 Apr 1 - Oct 1; go with Shanks after 1940. +# Whitman says DST observed 1935-08-11/1942-11-01, then 1943-03-29/10-04, +# 1944-04-03/10-02, and 1945-04-01/10-01; go with Shanks. Rule Norway 1945 only - Apr 2 2:00s 1:00 S Rule Norway 1945 only - Oct 1 2:00s 0 - Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S @@ -1874,6 +1900,9 @@ # harmonized with the EU), and that they stayed +0:00 that winter. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +# DSH writes that despite Decree 1,469 (1915), the change to the clocks was not +# done every year, depending on what Spain did, because of railroad schedules. +# Go with Shanks. Rule Port 1916 only - Jun 17 23:00 1:00 S # Whitman gives 1916 Oct 31; go with Shanks. Rule Port 1916 only - Nov 1 1:00 0 - =================================================================== RCS file: RCS/southamerica,v retrieving revision 1999.1 retrieving revision 1999.1.1.1 diff -u -r1999.1 -r1999.1.1.1 --- southamerica 1999/01/19 21:20:18 1999.1 +++ southamerica 1999/01/31 08:56:31 1999.1.1.1 @@ -249,70 +249,90 @@ # <a href="http://pcdsh01.on.br/DecHV.html"> # Decretos sobre o Horario de Verao no Brasil # </a> (1998-09-25, in Portuguese). -# I don't read Portuguese, and haven't been able to verify them against -# the Shanks and IATA data; there do seem to be minor discrepancies. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20.466</a> (1931-01-10) -# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21.896</a> (1932-01-10) +# 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 D Rule Brazil 1932 1933 - Apr 1 0:00 0 S Rule Brazil 1932 only - Oct 3 0:00 1:00 D -# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23.195</a> (1933-10-10) +# 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) -# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32.308</a> (1953-02-24) +# 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 D -Rule Brazil 1950 only - Apr 16 0:00 0 S -Rule Brazil 1951 1953 - Apr 1 0:00 0 S -# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34.724</a> (1953-11-30) +Rule Brazil 1950 only - Apr 16 1:00 0 S +Rule Brazil 1951 1952 - Apr 1 0:00 0 S +# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) +Rule Brazil 1953 only - Mar 1 0:00 0 S +# 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) -# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53.071</a> (1963-12-03) +# 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 D -# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53.604</a> (1964-02-25) +# 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 S -# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55.639</a> (1965-01-27) +# 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 D -Rule Brazil 1965 only - Apr 1 0:00 0 S -# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57.303</a> (1965-11-22) +Rule Brazil 1965 only - Mar 31 0:00 0 S +# 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 D -# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57.843</a> (1966-02-18) +# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) Rule Brazil 1966 1968 - Mar 1 0:00 0 S Rule Brazil 1966 1967 - Nov 1 0:00 1:00 D -# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63.429</a> (1968-10-15) -# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91.698</a> (1985-09-27) +# 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 D -# Decree 92.310 (1986-01-21) -# Decree 92.463 (1986-03-13) +# Decree 92,310 (1986-01-21) +# Decree 92,463 (1986-03-13) Rule Brazil 1986 only - Mar 15 0:00 0 S -# Decree 93.316 (1986-10-01) -# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94.922</a> (1987-09-22) -Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1:00 D +# Decree 93,316 (1986-10-01) +Rule Brazil 1986 only - Oct 25 0:00 1:00 D Rule Brazil 1987 only - Feb 14 0:00 0 S +# 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 D Rule Brazil 1988 only - Feb 7 0:00 0 S -# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96.676</a> (1988-09-12) -# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98.077</a> (1989-08-21) -# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99.530</a> (1990-09-17) -# Decree 99.629 (1990-10-19) -# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25): -# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16): -Rule Brazil 1989 only - Jan 22 0:00 0 S -Rule Brazil 1988 1989 - Oct Sun>=10 0:00 1:00 D -Rule Brazil 1990 1991 - Feb Sun>=11 0:00 0 S -Rule Brazil 1990 1992 - Oct Sun>=20 0:00 1:00 D +# 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 D +Rule Brazil 1989 only - Jan 29 0:00 0 S +# 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 D +Rule Brazil 1990 only - Feb 11 0:00 0 S +# 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 D +Rule Brazil 1991 only - Feb 17 0:00 0 S +# <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 D Rule Brazil 1992 only - Feb 9 0:00 0 S +# <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 D +Rule Brazil 1993 only - Jan 31 0:00 0 S # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) -# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1.252</a> (1994-09-22) -# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1.636</a> (1995-09-14) -# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1.674</a> (1995-10-13) +# 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. +# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) +# adopted by same states, plus 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 D -Rule Brazil 1993 only - Jan 31 0:00 0 S Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 S -# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2.000</a> (1996-09-04) -Rule Brazil 1996 only - Feb Sun>=11 0:00 0 S -Rule Brazil 1996 only - Oct Sun>=1 0:00 1:00 D +Rule Brazil 1996 only - Feb 11 0:00 0 S +# 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 D +Rule Brazil 1997 only - Feb 16 0:00 0 S # 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, @@ -326,16 +346,17 @@ # </a>, # Church Net UK (1997-10-02). # -# Decree 2.317 (1997-09-04) +# Decree 2,317 (1997-09-04), adopted by same states. Rule Brazil 1997 only - Oct 6 0:00 1:00 D -# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2.495</a> +# 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 S -# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2.780</a> (1998-09-11) +# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) +# adopted by the same states as before, # specifies only the 1998-10-11 and 1999-02-21 transitions; # after that, these rules are guesses and are quite possibly wrong, # but they are more likely than no DST at all. -Rule Brazil 1998 max - Oct Sun>=11 0:00 1:00 D +Rule Brazil 1998 max - Oct Sun>=8 0:00 1:00 D Rule Brazil 1999 max - Feb Sun>=15 0:00 0 S @@ -343,46 +364,60 @@ # # Fernando de Noronha Zone America/Noronha -2:09:40 - LMT 1914 - -2:00 - FST 1963 Dec 9 -2:00 Brazil F%sT 1990 Jul -2:00 - FST # -# Amapa, east Para, Maranhao, Piaui, Ceara, Rio Grande do Norte, Paraiba, +# Amapa, east Para +Zone America/Belem -3:13:56 - LMT 1914 + -3:00 Brazil E%sT 1988 Jul + -3:00 - EST +# +# Maranhao, Piaui, Ceara, Rio Grande do Norte, Paraiba, # Pernambuco (except Fernando de Noronha) Zone America/Fortaleza -2:34:00 - LMT 1914 - -3:00 - EST 1963 Dec 9 -3:00 Brazil E%sT 1990 Jul -3:00 - EST # -# Alagoas, Sergipe, Tocantins -# IATA SSIM (1996/1998) keeps bouncing back and forth as to whether -# Alagoas and Sergipe observe DST. For now, continue to assume that they do. -Zone America/Maceio -2:22:52 - LMT 1914 - -3:00 - EST 1963 Dec 9 +# Tocantins +Zone America/Araguaina -3:12:48 - LMT 1914 -3:00 Brazil E%sT 1990 Jul -3:00 - EST 1995 Jul -3:00 Brazil E%sT # +# Alagoas, Sergipe +Zone America/Maceio -2:22:52 - LMT 1914 + -3:00 Brazil E%sT 1990 Jul + -3:00 - EST 1995 Jul + -3:00 Brazil E%sT 1996 Jul + -3:00 - EST +# # Bahia, Goias, Distrito Federal, Minas Gerais, Espirito Santo, Rio de Janeiro, # Sao Paulo, Parana, Santa Catarina, Rio Grande do Sul Zone America/Sao_Paulo -3:06:28 - LMT 1914 + -3:00 Brazil E%sT 1963 Oct 23 00:00 + -3:00 - EDT 1964 -3:00 Brazil E%sT # # Mato Grosso, Mato Grosso do Sul Zone America/Cuiaba -3:44:20 - LMT 1914 - -4:00 - WST 1963 Dec 9 - -4:00 Brazil W%sT + -4:00 Brazil W%sT 1990 Jul + -4:00 - WST +# +# Roraima, west Para, Rondonia +Zone America/Porto_Velho -4:15:36 - LMT 1914 + -4:00 Brazil W%sT 1988 Jul + -4:00 - WST # -# Roraima, west Para, Amazonas, Rondonia +# Amazonas Zone America/Manaus -4:00:04 - LMT 1914 - -4:00 - WST 1963 Dec 9 - -4:00 Brazil W%sT 1990 Jul + -4:00 Brazil W%sT 1988 Jul + -4:00 - WST 1993 Jul + -4:00 Brazil W%sT 1994 Jul -4:00 - WST # # Acre # Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too. Zone America/Porto_Acre -4:31:12 - LMT 1914 - -5:00 - AST 1963 Dec 9 -5:00 Brazil A%sT 1988 Jul -5:00 - AST # @@ -518,8 +553,6 @@ Rule Para 1994 1995 - Feb lastSun 0:00 0 - Rule Para 1996 1998 - Mar 1 0:00 0 - Rule Para 1996 max - Oct Sun>=1 0:00 1:00 S -# IATA SSIM (1998-02) claims that the 1999 switch will be on 02-27. -# Assume this is a typo, and that 02-28 was meant. Rule Para 1999 max - Feb lastSun 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 =================================================================== RCS file: RCS/zone.tab,v retrieving revision 1.2.1.8.1.2 retrieving revision 1.2.1.8.1.3 diff -u -r1.2.1.8.1.2 -r1.2.1.8.1.3 --- zone.tab 1998/09/23 01:42:49 1.2.1.8.1.2 +++ zone.tab 1999/01/31 08:56:31 1.2.1.8.1.3 @@ -69,11 +69,14 @@ BN +0456+11455 Asia/Brunei BO -1630-06809 America/La_Paz BR -0351-03225 America/Noronha Fernando de Noronha -BR -0343-03830 America/Fortaleza NE Brazil (AP, east PA, MA, PI, CE, RN, PR, PE) -BR -0940-03543 America/Maceio ENE Brazil (AL, SE, TO) +BR -0127-04829 America/Belem Amapa, E Para +BR -0343-03830 America/Fortaleza NE Brazil (MA, PI, CE, RN, PR, PE) +BR -0712-04812 America/Araguaina Tocantins +BR -0940-03543 America/Maceio Alagoas, Sergipe BR -2332-04637 America/Sao_Paulo S & SE Brazil (BA, GO, DF, MG, ES, RJ, SP, PR, SC, RS) -BR -1535-05605 America/Cuiaba SW Brazil (MT, MS) -BR -0308-06001 America/Manaus NW Brazil (RR, west PA, AM, RO) +BR -1535-05605 America/Cuiaba Mato Grosso, Mato Grosso do Sul +BR -0846-06354 America/Porto_Velho W Para, Rondonia, Roraima +BR -0308-06001 America/Manaus Amazonas BR -0934-06731 America/Porto_Acre Acre BS +2505-07721 America/Nassau BT +2728+08939 Asia/Thimbu @@ -188,8 +191,7 @@ IT +4154+01229 Europe/Rome JM +1800-07648 America/Jamaica JO +3157+03556 Asia/Amman -JP +3542+13946 Asia/Tokyo most locations -JP +2420+12409 Asia/Ishigaki south Ryukyu Islands +JP +353916+1394441 Asia/Tokyo KE -0117+03649 Africa/Nairobi KG +4254+07436 Asia/Bishkek KH +1133+10455 Asia/Phnom_Penh =================================================================== RCS file: RCS/africa,v retrieving revision 1998.8 retrieving revision 1998.8.1.1 diff -u -r1998.8 -r1998.8.1.1 --- africa 1998/09/24 14:46:08 1998.8 +++ africa 1999/01/31 08:56:31 1998.8.1.1 @@ -207,9 +207,9 @@ 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. +# Go with IATA starting in 1995, except correct 1995 entry from 09-30 to 09-29. Rule Egypt 1995 max - Apr Fri>=22 0:00s 1:00 S -Rule Egypt 1995 max - Sep lastFri 23:00s 0 - +Rule Egypt 1995 max - Sep lastThu 23:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:00 - LMT 1900 Oct