southamerica revision 538f043421a57b3be38677f831d3ee9dd6d2b403
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian Maeder#ident "%Z%%M% %I% %E% SMI"
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian Maeder# @(#)southamerica 8.12
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian Maeder# This data is by no means authoritative; if you think you know better,
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian Maeder# go ahead and edit the file (and please send any changes to
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian Maeder# tz@elsie.nci.nih.gov for general use in the future).
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# From Paul Eggert (2006-03-22):
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# A good source for time zone historical data outside the U.S. is
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# San Diego: ACS Publications, Inc. (2003).
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Gwillim Law writes that a good source
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# for recent time zone data is the International Air Transport
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Association's Standard Schedules Information Manual (IATA SSIM),
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# published semiannually. Law sent in several helpful summaries
d1126d58419412635564085406d3779325b33ae0Till Mossakowski# of the IATA's data after 1990.
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# Except where otherwise noted, Shanks & Pottenger is the source for
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# entries through 1990, and IATA SSIM is the source for entries afterwards.
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Earlier editions of these tables used the North American style (e.g. ARST and
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# ARDT for Argentine Standard and Daylight Time), but the following quote
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# suggests that it's better to use European style (e.g. ART and ARST).
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# I suggest the use of _Summer time_ instead of the more cumbersome
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# _daylight-saving time_. _Summer time_ seems to be in general use
e8d782e6e650b71a2b0ee8461fd8d9fa31525591Christian Maeder# in Europe and South America.
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# -- E O Cutler, _New York Times_ (1937-02-14), quoted in
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# H L Mencken, _The American Language: Supplement I_ (1960), p 466
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Earlier editions of these tables also used the North American style
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# for time zones in Brazil, but this was incorrect, as Brazilians say
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# the railroad sector, writes (1999-07-06):
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# The subject of time zones is currently a matter of discussion/debate in
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian Maeder# Brazil. Let's say that "the Brasilia time" is considered the
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# "official time" because Brasilia is the capital city.
0b2340d1ef7d0998e4b0c321021be942c6b67652Christian Maeder# The other three time zones are called "Brasilia time "minus one" or
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# "plus one" or "plus two". As far as I know there is no such
0b2340d1ef7d0998e4b0c321021be942c6b67652Christian Maeder# name/designation as "Eastern Time" or "Central Time".
0b2340d1ef7d0998e4b0c321021be942c6b67652Christian Maeder# So I invented the following (English-language) abbreviations for now.
c0b6cd35d7f5da7483964a378fefc3bb0f519d9eTill Mossakowski# Corrections are welcome!
c0b6cd35d7f5da7483964a378fefc3bb0f519d9eTill Mossakowski# -2:00 FNT FNST Fernando de Noronha
c0b6cd35d7f5da7483964a378fefc3bb0f519d9eTill Mossakowski# -3:00 BRT BRST Brasilia
0b2340d1ef7d0998e4b0c321021be942c6b67652Christian Maeder# -4:00 AMT AMST Amazon
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# -5:00 ACT ACST Acre
2b4130336e941b7d01c78a6da55449a4c6eca609Till Mossakowski###############################################################################
2b4130336e941b7d01c78a6da55449a4c6eca609Till Mossakowski###############################################################################
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# From Bob Devine (1988-01-28):
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Argentina: first Sunday in October to first Sunday in April since 1976.
0b7c8279c741857d1681160f8b4144a9430ffa7fTill Mossakowski# Double Summer time from 1969 to 1974. Switches at midnight.
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# From U. S. Naval Observatory (1988-01-199):
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# ARGENTINA 3 H BEHIND UTC
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# From Hernan G. Otero (1995-06-26):
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# I am sending modifications to the Argentine time zone table...
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# AR was chosen because they are the ISO letters that represent Argentina.
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
0b7c8279c741857d1681160f8b4144a9430ffa7fTill MossakowskiRule Arg 1930 only - Dec 1 0:00 1:00 S
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill MossakowskiRule Arg 1931 only - Apr 1 0:00 0 -
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill MossakowskiRule Arg 1931 only - Oct 15 0:00 1:00 S
0b7c8279c741857d1681160f8b4144a9430ffa7fTill MossakowskiRule Arg 1932 1940 - Mar 1 0:00 0 -
0b7c8279c741857d1681160f8b4144a9430ffa7fTill MossakowskiRule Arg 1932 1939 - Nov 1 0:00 1:00 S
0b7c8279c741857d1681160f8b4144a9430ffa7fTill MossakowskiRule Arg 1940 only - Jul 1 0:00 1:00 S
0b7c8279c741857d1681160f8b4144a9430ffa7fTill MossakowskiRule Arg 1941 only - Jun 15 0:00 0 -
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill MossakowskiRule Arg 1941 only - Oct 15 0:00 1:00 S
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill MossakowskiRule Arg 1943 only - Aug 1 0:00 0 -
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian MaederRule Arg 1943 only - Oct 15 0:00 1:00 S
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian MaederRule Arg 1946 only - Mar 1 0:00 0 -
891a081e38584dfb59697349fbf0aba2c4d4e1e2Christian MaederRule Arg 1946 only - Oct 1 0:00 1:00 S
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill MossakowskiRule Arg 1963 only - Oct 1 0:00 0 -
d1126d58419412635564085406d3779325b33ae0Till MossakowskiRule Arg 1963 only - Dec 15 0:00 1:00 S
0b2340d1ef7d0998e4b0c321021be942c6b67652Christian MaederRule Arg 1964 1966 - Mar 1 0:00 0 -
d1126d58419412635564085406d3779325b33ae0Till MossakowskiRule Arg 1964 1966 - Oct 15 0:00 1:00 S
e8d782e6e650b71a2b0ee8461fd8d9fa31525591Christian MaederRule Arg 1967 only - Apr 2 0:00 0 -
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian MaederRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S
d1126d58419412635564085406d3779325b33ae0Till MossakowskiRule Arg 1968 1969 - Apr Sun>=1 0:00 0 -
cd0320bb34ed11f4b57fd927e0e70ee7ee66057dChristian MaederRule Arg 1974 only - Jan 23 0:00 1:00 S
d1126d58419412635564085406d3779325b33ae0Till MossakowskiRule Arg 1974 only - May 1 0:00 0 -
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian MaederRule Arg 1988 only - Dec 1 0:00 1:00 S
d1126d58419412635564085406d3779325b33ae0Till Mossakowski# From Hernan G. Otero (1995-06-26):
e8d782e6e650b71a2b0ee8461fd8d9fa31525591Christian Maeder# These corrections were contributed by InterSoft Argentina S.A.,
e8d782e6e650b71a2b0ee8461fd8d9fa31525591Christian Maeder# obtaining the data from the:
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# Talleres de Hidrografia Naval Argentina
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# (Argentine Naval Hydrography Institute)
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian MaederRule Arg 1989 1993 - Mar Sun>=1 0:00 0 -
d1126d58419412635564085406d3779325b33ae0Till MossakowskiRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
e8d782e6e650b71a2b0ee8461fd8d9fa31525591Christian Maeder# From Hernan G. Otero (1995-06-26):
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# From this moment on, the law that mandated the daylight saving
d1126d58419412635564085406d3779325b33ae0Till Mossakowski# time corrections was derogated and no more modifications
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# to the time zones (for daylight saving) are now made.
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# From Rives McDow (2000-01-10):
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# which did not result in the switch of a time zone, as they stayed 9 hours
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian Maeder# from the International Date Line.
0f0733871ac90631f6d7364c5fbc51bf0541a384Christian MaederRule Arg 1999 only - Oct Sun>=1 0:00 1:00 S
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill MossakowskiRule Arg 2000 only - Mar Sun>=1 0:00 0 -
0b2340d1ef7d0998e4b0c321021be942c6b67652Christian Maeder# From Peter Gradelski via Steffen Thorsen (2000-03-01):
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# We just checked with our Sao Paulo office and they say the government of
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# Argentina decided not to become one of the countries that go on or off DST.
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# So Buenos Aires should be -3 hours from GMT at all times.
d1126d58419412635564085406d3779325b33ae0Till Mossakowski# From Fabian L. Arce Jofre (2000-04-04):
d1126d58419412635564085406d3779325b33ae0Till Mossakowski# The law that claimed DST for Argentina was derogated by President Fernando
d1126d58419412635564085406d3779325b33ae0Till Mossakowski# de la Rua on March 2, 2000, because it would make people spend more energy
8731f7b93b26083dc34a2c0937cd6493b42f2c2cTill Mossakowski# in the winter time, rather than less. The change took effect on March 3.
# <a href="http://www.spicasc.net/horvera.html">
# contains a contradiction. I would give more credence to the Saturday/Sunday
# America/Cordoba split into 6 subregions during 1991/1992, but we
Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31
Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31
Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31
Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31
Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
Zone America/La_Paz -4:32:36 - LMT 1890
# <a href="http://pcdsh01.on.br/verao1.html">
# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975
# <a href="http://pcdsh01.on.br/DecHV.html">
# 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)
# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10)
# 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/HV34724.htm">34,724</a> (1953-11-30)
# 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/HV53604.htm">53,604</a> (1964-02-25)
# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27)
# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22)
# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18)
# 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/HV94922.htm">94,922</a> (1987-09-22)
# 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)
# <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)
# 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)
# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04)
# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a>
# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11)
# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a>
# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30)
# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06)
# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13)
# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17)
# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a>
# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm"></a>
# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm"></a>
# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19),
# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03),
Zone America/Noronha -2:09:40 - LMT 1914
Zone America/Belem -3:13:56 - LMT 1914
Zone America/Fortaleza -2:34:00 - LMT 1914
Zone America/Recife -2:19:36 - LMT 1914
Zone America/Araguaina -3:12:48 - LMT 1914
Zone America/Maceio -2:22:52 - LMT 1914
# There are too many Salvadors elsewhere, so use America/Bahia instead
# of America/Salvador.
Zone America/Bahia -2:34:04 - LMT 1914
Zone America/Sao_Paulo -3:06:28 - LMT 1914
Zone America/Campo_Grande -3:38:28 - LMT 1914
Zone America/Cuiaba -3:44:20 - LMT 1914
Zone America/Porto_Velho -4:15:36 - LMT 1914
Zone America/Boa_Vista -4:02:40 - LMT 1914
Zone America/Manaus -4:00:04 - LMT 1914
Zone America/Eirunepe -4:39:28 - LMT 1914
Zone America/Rio_Branco -4:31:12 - LMT 1914
# The following data for Chile and America/Santiago are from
# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks
Zone America/Santiago -4:42:46 - LMT 1890
Zone Pacific/Easter -7:17:44 - LMT 1890
# Sala y Gomez Island is like Pacific/Easter.
# San Felix, and Antarctic bases, are like America/Santiago.
Zone America/Bogota -4:56:20 - LMT 1884 Mar 13
# no information; probably like America/Bogota
Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad
# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
Zone America/Guayaquil -5:19:20 - LMT 1890
Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
Zone Atlantic/Stanley -3:51:24 - LMT 1890
Zone America/Cayenne -3:29:20 - LMT 1911 Jul
Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
Zone America/Asuncion -3:50:40 - LMT 1890
Zone America/Lima -5:08:12 - LMT 1890
Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
Zone America/Paramaribo -3:40:40 - LMT 1911
Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
Zone America/Caracas -4:27:44 - LMT 1890