-# @(#)southamerica 7.40
-
-# $FreeBSD: src/share/zoneinfo/southamerica,v 1.16 2001/04/06 16:46:52 wollman Exp $
+# @(#)southamerica 7.46
# 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
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
#
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# 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
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 1 0:00 0 -
+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 1974 1976 - Oct Sun>=1 0:00 1:00 S
-Rule Arg 1975 1977 - Apr Sun>=1 0:00 0 -
-Rule Arg 1985 only - Nov 2 0:00 1:00 S
-Rule Arg 1986 only - Mar 14 0:00 0 -
-Rule Arg 1986 1987 - Oct 25 0:00 1:00 S
-Rule Arg 1987 only - Feb 13 0:00 0 -
-Rule Arg 1988 only - Feb 7 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):
# 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 Nov
- -4:16:44 - CMT 1920 May # Cordoba Mean Time
+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 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
+ -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), La Pampa (LP), Chubut (CH)
-Zone America/Rosario -4:02:40 - LMT 1894 Nov
- -4:16:44 - CMT 1920 May
+# 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 Jul
- -3:00 - ART 1999 Oct 3 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
- -3:00 - ART
-#
-# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL),
-# Neuquen (NQ), Rio Negro (RN)
-Zone America/Cordoba -4:16:44 - LMT 1894 Nov
- -4:16:44 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1990 Jul
- -3:00 - ART 1999 Oct 3 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
+ -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 Nov
- -4:16:44 - CMT 1920 May
+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 1991 Mar 3
+ -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
- -4:00 1:00 WARST 1992 Mar 15
- -4:00 - WART 1992 Oct 18
- -3:00 - ART 1999 Oct 3 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
+ -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 Nov
- -4:16:44 - CMT 1920 May
+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 1990 Jul
- -3:00 - ART 1991 Jul
- -3:00 Arg AR%sT 1992 Jul
- -3:00 - ART 1999 Oct 3 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
+ -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 Nov
- -4:16:44 - CMT 1920 May
+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 1991 Mar 3
+ -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 - ART 1999 Oct 3 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
+ -3:00 Arg AR%sT 1999 Oct 3
+ -4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART
# Aruba
# Bolivia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/La_Paz -4:32:36 - LMT 1890
- -4:32:36 - LPMT 1931 Oct 15 # La Paz Mean Time
+ -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
# http://pcdsh01.on.br/Fusbr.htm
# http://pcdsh01.on.br/Fusbrhv.htm
-# From Paul Eggert (2000-10-02):
-# The official decrees referenced below are taken from
+# 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> (1999-10-04, in Portuguese).
+# </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
# 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
#
-# These give only one year's rules. After that, the rules are guesses
+Rule Brazil 2003 max - Oct Sun>=8 0:00 1:00 S
+# The latest decree listed above says that the following states observe DST:
+# BA, DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP, TO.
+#
+# For dates after mid-2003, the above rules with TO="max" are guesses
# and are quite possibly wrong, but are more likely than no DST at all.
-Rule Brazil 2000 max - Oct Sun>=8 0:00 1:00 S
-Rule Brazil 2001 max - Feb Sun>=15 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-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)
-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)
-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), Goias (GO), Distrito Federal (DF), Minas Gerais (MG),
-3:00 1:00 BRST 1964
-3:00 Brazil BR%sT
#
-# Mato Grosso, Mato Grosso do Sul
+# Mato Grosso (MT), Mato Grosso do Sul (MS)
Zone America/Cuiaba -3:44:20 - LMT 1914
-4:00 Brazil AM%sT
#
# Because of the same drought, the government decided to end DST later,
# on April 3, (one-time change).
-# From Gwillim Law (2001-02-20):
-# I came across a Chilean on-line newspaper, La Tercera. Its
-# <a href="http://www.tercera.cl/diario/1998/03/13/extras.html">
-# 1998-03-13 issue
-# </a>, says (my translation):
-# "At 24:00 (midnight) tomorrow (Saturday) - 22:00 in the insular
-# territory [Easter Island, Juan Fernandez, etc.] - winter time will
-# begin in the entire country."
-
-# From Paul Eggert (2001-02-21):
+# 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 1969 1997 - Oct Sun>=9 4:00u 1:00 S
-Rule Chile 1970 1998 - Mar Sun>=9 3:00u 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
-7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time
-6:00 Chile EAS%sT
#
-# Whitman says Juan Fernandez Is are like America/Santiago.
-# San Ambrosio, San Felix
-# no information; probably like America/Santiago
-
+# 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,
# 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 max - Oct Sun>=1 0:00 1:00 S
+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 max - Mar Sun>=1 0:00 0 -
+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
Rule Peru 1994 only - Apr 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Lima -5:08:12 - LMT 1890
- -5:09 - LMT 1908 Jul 28 # Lima Mean Time
+ -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
-5:00 Peru PE%sT # Peru Time
# South Georgia
# Venezuela
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Caracas -4:27:44 - LMT 1890
- -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time
+ -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
-4:30 - VET 1965 # Venezuela Time
-4:00 - VET
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