-# @(#)asia 7.81
+# @(#)asia 7.85
# 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):
+# From Paul Eggert (1999-03-22):
#
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (5th edition),
# 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
+# 9:00 JST JDT Japan
+# 9:00 KST KDT Korea
# 9:30 CST (Australian) Central Standard Time
#
# See the `europe' file for Russia and Turkey in Asia.
# 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):
+# From Paul Eggert (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.
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
Link Asia/Nicosia Europe/Nicosia
# Georgia
-# From Paul Eggert <eggert@twinsun.com> (1994-11-19):
+# From Paul Eggert (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):
+# From Mathew Englander, 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/Dili 8:22:20 - LMT 1912
- 8:00 - TPT 1942 Feb 21 23:00 # E Timor Time
+ 8:00 - TLT 1942 Feb 21 23:00 # E Timor Time
9:00 - JST 1945 Aug
- 9:00 - TPT 1976 May 3
+ 9:00 - TLT 1976 May 3
8:00 - CIT 2000 Sep 17 00:00
- 9:00 - TPT
+ 9:00 - TLT
# India
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# 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)
+#
+# From Roozbeh Pournader (2005-04-05):
+# The text of the Iranian law, in effect since 1925, clearly mentions
+# that the true solar year is the measure, and there is no arithmetic
+# leap year calculation involved. There has never been any serious
+# plan to change that law....
+#
+# From Paul Eggert (2005-04-05):
# 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.
+# I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates,
+# stopping after 2037 when 32-bit time_t's overflow.
+# That cal-persia used Birashk's approximation, which disagrees with the solar
+# calendar predictions for the year 2025, so I corrected those dates by hand.
+#
+# From Oscar van Vlijmen (2005-03-30), writing about future
+# discrepancies between cal-persia and the Iranian calendar:
+# For 2091 solar-longitude-after yields 2091-03-20 08:40:07.7 UT for
+# the vernal equinox and that gets so close to 12:00 some local
+# Iranian time that the definition of the correct location needs to be
+# known exactly, amongst other factors. 2157 is even closer:
+# 2157-03-20 08:37:15.5 UT. But the Gregorian year 2025 should give
+# no interpretation problem whatsoever. By the way, another instant
+# in the near future where there will be a discrepancy between
+# arithmetical and astronomical Iranian calendars will be in 2058:
+# vernal equinox on 2058-03-20 09:03:05.9 UT. The Java version of
+# Reingold's/Dershowitz' calculator gives correctly the Gregorian date
+# 2058-03-21 for 1 Farvardin 1437 (astronomical).
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Iran 1978 1980 - 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 2024 only - Mar 21 0:00 1:00 D
+Rule Iran 2024 only - Sep 21 0:00 0 S
+Rule Iran 2025 2027 - Mar 22 0:00 1:00 D
+Rule Iran 2025 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
# Iraq
#
-# From Jonathan Lennox <lennox@cs.columbia.edu> (2000-06-12):
+# From Jonathan Lennox (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
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>
+# From Ephraim Silverberg
# (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, 2004-12-22,
# and 2005-02-17):
# `9:00' and `JST' is from Guy Harris.
-# From Paul Eggert <eggert@twinsun.com> (1995-03-06):
+# From Paul Eggert (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.''
+
+# From Mayumi Negishi in the 2005-08-10 Japan Times
+# <http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?nn20050810f2.htm>:
+# Occupation authorities imposed daylight-saving time on Japan on
+# [1948-05-01].... But lack of prior debate and the execution of
+# daylight-saving time just three days after the bill was passed generated
+# deep hatred of the concept.... The Diet unceremoniously passed a bill to
+# dump the unpopular system in October 1951, less than a month after the San
+# Francisco Peace Treaty was signed. (A government poll in 1951 showed 53%
+# of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
+# wanted to keep it.)
+
# 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.
+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 (for birth certificates, presumably, since
+# Shanks's audience is astrologers) were US military bases. For now, assume
+# that for most purposes daylight-saving time was observed; otherwise, what
+# would have been the point of the 1951 poll?
# From Hideyuki Suzuki (1998-11-09):
# 'Tokyo' usually stands for the former location of Tokyo Astronomical
Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
9:00 - JST 1896
9:00 - CJT 1938
- 9:00 - JST
+ 9:00 Japan J%sT
# Since 1938, all Japanese possessions have been like Asia/Tokyo.
# Jordan
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
+# Andrew Evtichov (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.
# - 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.
-#
+
# <a href="http://www.kazsociety.org.uk/news/2005/03/30.htm">
# From Kazakhstan Embassy's News Bulletin #11 (2005-03-21):
# </a>
# daylight saving time citing lack of economic benefits and health
# complications coupled with a decrease in productivity.
#
+# From Branislav Kojic (in Astana) via Gwillim Law (2005-06-28):
+# ... what happened was that the former Kazakhstan Eastern time zone
+# was "blended" with the Central zone. Therefore, Kazakhstan now has
+# two time zones, and difference between them is one hour. The zone
+# closer to UTC is the former Western zone (probably still called the
+# same), encompassing four provinces in the west: Aqtobe, Atyrau,
+# Mangghystau, and West Kazakhstan. The other zone encompasses
+# everything else.... I guess that would make Kazakhstan time zones
+# de jure UTC+5 and UTC+6 respectively.
+
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
5:00 - SHET 1991 Dec 16 # independence
5:00 RussiaAsia AQT%sT 1995 Mar lastSun 2:00 # Aqtau Time
4:00 RussiaAsia AQT%sT 2005 Mar 15
- 4:00 - AQTT
+ 5:00 - AQTT
# West Kazakhstan
Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk
4:00 - URAT 1930 Jun 21 # Ural'sk time
4:00 RussiaAsia URA%sT 1991
4:00 - URAT 1991 Dec 16 # independence
4:00 RussiaAsia ORA%sT 2005 Mar 15 # Oral Time
- 4:00 - ORAT
+ 5:00 - ORAT
# Kyrgyzstan (Kirgizstan)
# Transitions through 1991 are from Shanks.
+
+# From Paul Eggert (2005-08-15):
+# According to an article dated today in the Kyrgyzstan Development Gateway
+# <http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml>
+# Kyrgyzstan is canceling the daylight saving time system. I take the article
+# to mean that they will leave their clocks at 6 hours ahead of UTC.
+
# 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 -
#
# [The province of Selenge is omitted from the above lists.]
-# From Ganbold Ts., Ulaanbaatar <ganbold@micom.mng.net> (2004-04-17):
+# From Ganbold Ts., Ulaanbaatar (2004-04-17):
# Daylight saving occurs at 02:00 local time last Saturday of March.
# It will change back to normal at 02:00 local time last Saturday of
# September.... As I remember this rule was changed in 2001.
# For now, assume Rives McDow's informant got confused about Friday vs
# Saturday, and that his 2001 dates should have 1 added to them.
+# From Paul Eggert (2005-07-26):
+# We have wildly conflicting information about Mongolia's time zones.
+# Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says
+# there is only one time zone and that DST is observed, citing Microsoft
+# Windows XP as the source. Risto Nykanen (2005-05-16) reports that
+# travelmongolia.org says there are two time zones (UTC+7, UTC+8) with no DST.
+# Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in
+# Washington, DC says there are two time zones, with DST observed.
+# He also found
+# <http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1&>
+# which also says that there is DST, and which has a comment by "Toddius"
+# (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones.
+# The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT
+# and some Eastern provinces are +9 GMT but Sukhbaatar Aimag is SUHK +8.5 GMT.
+# The SUKH timezone is new this year, it is one of the few things the
+# parliament passed during the tumultuous winter session."
+# For now, let's ignore this information, until we have more confirmation.
+
# 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 -
# Palestine
-# From Amos Shapir <amos@nsof.co.il> (1998-02-15):
+# From Amos Shapir (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.
5:00 - UZT
# Vietnam
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
+# From Paul Eggert (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:
-# @(#)northamerica 7.72
+# @(#)northamerica 7.79
# 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):
+# From Paul Eggert (1999-03-22):
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
# 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):
+# From Paul Eggert (2005-04-16):
+# That 1883 transition occurred at 12:00 new time, not at 12:00 old time.
+# See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005).
+
+# From Paul Eggert (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.
+# It is the source for most of the pre-1991 US and Puerto Rico entries below.
# From Paul Eggert (2001-03-06):
# Daylight Saving Time was first suggested as a joke by Benjamin Franklin
# 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
+# -- Robertson Davies, The diary of Samuel Marchbanks,
+# Clarke, Irwin (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">
# 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
+# From Joseph Gallant 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
#
# He had scored a 20-second scoop on other broadcasters.
+# From Arthur David Olson (2005-08-22):
+# Paul has been careful to use the "US" rules only in those locations
+# that are part of the United States; this reflects the real scope of
+# U.S. government action. So even though the "US" rules have changed
+# in the latest release, other countries won't be affected.
+
# 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 2006 - 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.
+Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
+Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
+Rule US 2007 max - Nov Sun>=1 2:00 0 S
# From Bob Devine (1988-01-28):
# ...Alaska (and Hawaii) had the timezone names changed in 1967.
# 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".
-
+
+# From Arthur David Olson, 2005-08-09
+# The following was signed into law on 2005-08-08.
+#
+# H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS.
+# (a) Amendment- Section 3(a) of the Uniform Time Act of 1966 (15
+# U.S.C. 260a(a)) is amended--
+# (1) by striking `first Sunday of April' and inserting `second
+# Sunday of March'; and
+# (2) by striking `last Sunday of October' and inserting `first
+# Sunday of November'.
+# (b) Effective Date- Subsection (a) shall take effect 1 year after the
+# date of enactment of this Act or March 1, 2007, whichever is later.
+# (c) Report to Congress- Not later than 9 months after the effective
+# date stated in subsection (b), the Secretary shall report to Congress
+# on the impact of this section on energy consumption in the United
+# States.
+# (d) Right to Revert- Congress retains the right to revert the
+# Daylight Saving Time back to the 2005 time schedules once the
+# Department study is complete.
# 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,
+# Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky
+# (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts,
# New Hampshire, New Jersey, New York, North Carolina, Ohio,
# Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
# Vermont, Virginia, West Virginia
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
+Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
-5:00 US E%sT 1920
-5:00 NYC E%sT 1942
-5:00 US E%sT 1946
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
+Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
-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 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
+Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48
-7:00 US M%sT 1992 Oct 25 02:00
-6:00 US C%sT
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
+Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04
-7:00 US M%sT 1920
-7:00 Denver M%sT 1942
-7:00 US M%sT 1946
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
+Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
-8:00 US P%sT 1946
-8:00 CA P%sT 1967
-8:00 US P%sT
# 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
+Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42
-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
# switched four weeks late in 1974.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00
+Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11
-8:00 US P%sT 1923 May 13 2:00
-7:00 US M%sT 1974
-7:00 - MST 1974 Feb 3 2:00
# 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)
+# </a> (2005-05-03)
+#
+# From Paul Eggert (2005-08-22):
+# Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
+# with the following exceptions:
+#
+# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
+# Vandenburgh, and Warrick counties have been like America/Chicago.
+#
+# - Dearborn and Ohio counties have been like America/New_York.
+#
+# - Clark, Floyd, and Harrison counties have been like
+# America/Kentucky/Louisville.
+#
+# - Crawford, Starke, and Switzerland counties have their own time zone
+# histories as noted below.
#
-# 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.
+# From Paul Eggert (2005-08-16):
+# http://www.mccsc.edu/time.html says that Indiana will use DST starting 2006,
+# and that many counties may switch either to Central or to Eastern time.
+# The county-by-county decisions have not been made yet, so for now assume
+# that no counties will switch: this assumption is most likely wrong,
+# but it's the best we can do for now.
# 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
+Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22
-6:00 US C%sT 1920
-6:00 Indianapolis C%sT 1942
-6:00 US C%sT 1946
-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
+ -5:00 - EST 2006
+ -5:00 US E%sT
#
# Part of Crawford County, Indiana, last observed DST in 1975,
# and left its clocks alone in 1974.
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
+Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37
-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
+ -5:00 - EST 2006
+ -5:00 US E%sT
#
# Starke County, Indiana
# From Arthur David Olson (1991-10-28):
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
+Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30
-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
+ -5:00 - EST 2006
+ -5:00 US E%sT
#
# 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
+Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44
-6:00 US C%sT 1954 Apr 25 2:00
-5:00 - EST 1969
-5:00 US E%sT 1973
- -5:00 - EST
+ -5:00 - EST 2006
+ -5:00 US E%sT
# Part of Kentucky left its clocks alone in 1974.
-# This also includes a part of Indiana immediately adjacent to Louisville.
+# This also includes Clark, Floyd, and Harrison counties in Indiana.
# 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 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
+Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58
-6:00 US C%sT 1921
-6:00 Louisville C%sT 1942
-6:00 US C%sT 1946
-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
#
# Federal Register 65, 160 (2000-08-17), page 50154-50158.
# </a>
#
-Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00
+Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36
-6:00 US C%sT 1946
-6:00 - CST 1968
-6:00 US C%sT 2000 Oct 29 2:00
# _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):
+# From Paul Eggert (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).
# Canada
-# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
+# From Alain LaBont<e'> (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....
#
# T: de Terre-Neuve
# Y: du Yukon Yukon
#
-# From Paul Eggert <eggert@twinsun.com> (1994-11-22):
+# From Paul Eggert (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.
# 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):
+# From W. Jones (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
# 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:
+# Mathew Englander (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).
# </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,
# more.
# [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
+# From Gwillim Law (2005-05-21):
+# According to maps at
+# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SWE.jpg
+# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SSE.jpg
+# (both dated 2003), and
+# http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
+# (from a 1998 Canadian Geographic article), the de facto and de jure time
+# for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
+# round. Using Google, it's easy to find other websites that confirm this.
+# I wasn't able to find how far back this time regimen goes, but since it
+# predates the creation of Nunavut, it probably goes back many years....
+# The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
+#
+# From Paul Eggert (2005-07-26):
+# For lack of better information, assume that Southampton Island observed
+# daylight saving only during wartime.
+
# 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
-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/Coral_Harbour -5:32:40 - LMT 1884
+ -5:00 NT_YK E%sT 1946
+ -5:00 - EST
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
# 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 reports a transition at 1932-03-30 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
# 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):
+# From Alan Perry (1996-02-15):
# A guy from our Mexico subsidiary finally found the Presidential Decree
# outlining the timezone changes in Mexico.
#
-6:00 Guat C%sT
# Haiti
+# From Gwillim Law (2005-04-15):
+# Risto O. Nykanen wrote me that Haiti is now on DST.
+# I searched for confirmation, and I found a
+# <a href="http://www.haitianconsulate.org/time.doc"> press release
+# on the Web page of the Haitian Consulate in Chicago (2005-03-31),
+# </a>. Translated from French, it says:
+#
+# "The Prime Minister's Communication Office notifies the public in general
+# and the press in particular that, following a decision of the Interior
+# Ministry and the Territorial Collectivities [I suppose that means the
+# provinces], Haiti will move to Eastern Daylight Time in the night from next
+# Saturday the 2nd to Sunday the 3rd.
+#
+# "Consequently, the Prime Minister's Communication Office wishes to inform
+# the population that the country's clocks will be set forward one hour
+# starting at midnight. This provision will hold until the last Saturday in
+# October 2005.
+#
+# "Port-au-Prince, March 31, 2005"
+
# 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
# 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
+Rule Haiti 2005 only - Apr Sun>=1 0:00 1:00 D
+Rule Haiti 2005 only - Oct lastSun 0:00 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
# Nicaragua seems to be back at -6:00 but I have not been able to find when
# they changed from -5:00.
#
+# From Steffen Thorsen (2005-04-12):
+# I've got reports from 8 different people that Nicaragua just started
+# DST on Sunday 2005-04-10, in order to save energy because of
+# expensive petroleum. The exact end date for DST is not yet
+# announced, only "September" but some sites also say "mid-September".
+# Some background information is available on the President's official site:
+# http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm
+# The Decree, no 23-2005 is available here:
+# http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2005/Decreto%2023-2005%20Se%20adelanta%20en%20una%20hora%20en%20todo%20el%20territorio%20nacional%20apartir%20de%20las%2024horas%20del%2009%20de%20Abril.pdf
+#
+# From Paul Eggert (2005-05-01):
+# The decree doesn't say anything about daylight saving, but for now let's
+# assume that it is daylight saving and that they'll switch back on the
+# 3rd Sunday in September.
+#
+# From Gwillim Law (2005-04-21):
+# The Associated Press story on the time change, which can be found at
+# http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html
+# and elsewhere, says (fifth paragraph, translated from Spanish): "The last
+# time that a change of clocks was applied to save energy was in the year 2000
+# during the Arnoldo Aleman administration."...
+# The northamerica file says that Nicaragua has been on UTC-6 continuously
+# since December 1998. I wasn't able to find any details of Nicaraguan time
+# changes in 2000. Perhaps a note could be added to the northamerica file, to
+# the effect that we have indirect evidence that DST was observed in 2000.
+#
# 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
+Rule Nic 2005 only - Apr 10 0:00 1:00 D
+Rule Nic 2005 only - Sep 18 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?
-5:00 - EST 1975 Feb 16
-6:00 Nic C%sT 1993 Jan 1 4:00
-5:00 - EST 1998 Dec
- -6:00 - CST
+ -6:00 Nic C%sT
# Panama
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
projects / thirdparty / glibc.git / commitdiff
