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diff --git a/libkcal/libical/tzdata/southamerica b/libkcal/libical/tzdata/southamerica new file mode 100644 index 000000000..43f73d323 --- /dev/null +++ b/libkcal/libical/tzdata/southamerica @@ -0,0 +1,1259 @@ +# @(#)southamerica 8.19 +# <pre> + +# 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 (2006-03-22): +# A good source for time zone historical data outside the U.S. is +# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), +# San Diego: ACS Publications, Inc. (2003). +# +# Gwillim Law writes that a good source +# for recent time zone data is the International Air Transport +# Association's Standard Schedules Information Manual (IATA SSIM), +# published semiannually. Law sent in several helpful summaries +# of the IATA's data after 1990. +# +# Except where otherwise noted, Shanks & Pottenger is the source for +# entries through 1990, and IATA SSIM is the source for entries afterwards. +# +# Earlier editions of these tables used the North American style (e.g. ARST and +# ARDT for Argentine Standard and Daylight Time), but the following quote +# suggests that it's better to use European style (e.g. ART and ARST). +# I suggest the use of _Summer time_ instead of the more cumbersome +# _daylight-saving time_. _Summer time_ seems to be in general use +# in Europe and South America. +# -- E O Cutler, _New York Times_ (1937-02-14), quoted in +# H L Mencken, _The American Language: Supplement I_ (1960), p 466 +# +# Earlier editions of these tables also used the North American style +# for time zones in Brazil, but this was incorrect, as Brazilians say +# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in +# the railroad sector, writes (1999-07-06): +# The subject of time zones is currently a matter of discussion/debate in +# Brazil. Let's say that "the Brasilia time" is considered the +# "official time" because Brasilia is the capital city. +# The other three time zones are called "Brasilia time "minus one" or +# "plus one" or "plus two". As far as I know there is no such +# name/designation as "Eastern Time" or "Central Time". +# So I invented the following (English-language) abbreviations for now. +# Corrections are welcome! +# std dst +# -2:00 FNT FNST Fernando de Noronha +# -3:00 BRT BRST Brasilia +# -4:00 AMT AMST Amazon +# -5:00 ACT ACST Acre + +############################################################################### + +############################################################################### + +# Argentina + +# From Bob Devine (1988-01-28): +# Argentina: first Sunday in October to first Sunday in April since 1976. +# Double Summer time from 1969 to 1974. Switches at midnight. + +# From U. S. Naval Observatory (1988-01-199): +# ARGENTINA 3 H BEHIND UTC + +# From Hernan G. Otero (1995-06-26): +# I am sending modifications to the Argentine time zone table... +# AR was chosen because they are the ISO letters that represent Argentina. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Arg 1930 only - Dec 1 0:00 1:00 S +Rule Arg 1931 only - Apr 1 0:00 0 - +Rule Arg 1931 only - Oct 15 0:00 1:00 S +Rule Arg 1932 1940 - Mar 1 0:00 0 - +Rule Arg 1932 1939 - Nov 1 0:00 1:00 S +Rule Arg 1940 only - Jul 1 0:00 1:00 S +Rule Arg 1941 only - Jun 15 0:00 0 - +Rule Arg 1941 only - Oct 15 0:00 1:00 S +Rule Arg 1943 only - Aug 1 0:00 0 - +Rule Arg 1943 only - Oct 15 0:00 1:00 S +Rule Arg 1946 only - Mar 1 0:00 0 - +Rule Arg 1946 only - Oct 1 0:00 1:00 S +Rule Arg 1963 only - Oct 1 0:00 0 - +Rule Arg 1963 only - Dec 15 0:00 1:00 S +Rule Arg 1964 1966 - Mar 1 0:00 0 - +Rule Arg 1964 1966 - Oct 15 0:00 1:00 S +Rule Arg 1967 only - Apr 2 0:00 0 - +Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S +Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - +Rule Arg 1974 only - Jan 23 0:00 1:00 S +Rule Arg 1974 only - May 1 0:00 0 - +Rule Arg 1988 only - Dec 1 0:00 1:00 S +# +# From Hernan G. Otero (1995-06-26): +# These corrections were contributed by InterSoft Argentina S.A., +# obtaining the data from the: +# Talleres de Hidrografia Naval Argentina +# (Argentine Naval Hydrography Institute) +Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - +Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S +# +# From Hernan G. Otero (1995-06-26): +# From this moment on, the law that mandated the daylight saving +# time corrections was derogated and no more modifications +# to the time zones (for daylight saving) are now made. +# +# From Rives McDow (2000-01-10): +# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, +# which did not result in the switch of a time zone, as they stayed 9 hours +# from the International Date Line. +Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S +# From Paul Eggert (2007-12-28): +# DST was set to expire on March 5, not March 3, but since it was converted +# to standard time on March 3 it's more convenient for us to pretend that +# it ended on March 3. +Rule Arg 2000 only - Mar 3 0:00 0 - +# +# From Peter Gradelski via Steffen Thorsen (2000-03-01): +# We just checked with our Sao Paulo office and they say the government of +# Argentina decided not to become one of the countries that go on or off DST. +# So Buenos Aires should be -3 hours from GMT at all times. +# +# From Fabian L. Arce Jofre (2000-04-04): +# The law that claimed DST for Argentina was derogated by President Fernando +# de la Rua on March 2, 2000, because it would make people spend more energy +# in the winter time, rather than less. The change took effect on March 3. +# +# From Mariano Absatz (2001-06-06): +# one of the major newspapers here in Argentina said that the 1999 +# Timezone Law (which never was effectively applied) will (would?) be +# in effect.... The article is at +# http://ar.clarin.com/diario/2001-06-06/e-01701.htm +# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted +# 1999-09-17, and published 1999-09-21. The official publication is at: +# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF +# Regretfully, you have to subscribe (and pay) for the on-line version.... +# +# (2001-06-12): +# the timezone for Argentina will not change next Sunday. +# Apparently it will do so on Sunday 24th.... +# http://ar.clarin.com/diario/2001-06-12/s-03501.htm +# +# (2001-06-25): +# Last Friday (yes, the last working day before the date of the change), the +# Senate annulled the 1999 law that introduced the changes later postponed. +# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm +# It remains the vote of the Deputies..., but it will be the same.... +# This kind of things had always been done this way in Argentina. +# We are still -03:00 all year round in all of the country. +# +# From Steffen Thorsen (2007-12-21): +# A user (Leonardo Chaim) reported that Argentina will adopt DST.... +# all of the country (all Zone-entries) are affected. News reports like +# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate +# that Argentina will use DST next year as well, from October to +# March, although exact rules are not given. +# +# From Jesper Norgaard Welen (2007-12-26) +# The last hurdle of Argentina DST is over, the proposal was approved in +# the lower chamber too (Deputados) with a vote 192 for and 2 against. +# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to +# the original scanned proposal, where the dates and the zero hours are +# clear and unambiguous...This is the article about final approval: +# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> +# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 +# </a> +# +# From Paul Eggert (2007-12-22): +# For dates after mid-2008, the following rules are my guesses and +# are quite possibly wrong, but are more likely than no DST at all. +Rule Arg 2007 only - Dec 30 0:00 1:00 S +Rule Arg 2008 max - Mar Sun>=15 0:00 0 - +Rule Arg 2008 max - Oct Sun>=1 0:00 1:00 S + +# From Mariano Absatz (2004-05-21): +# Today it was officially published that the Province of Mendoza is changing +# its timezone this winter... starting tomorrow night.... +# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf +# From Paul Eggert (2004-05-24): +# It's Law No. 7,210. This change is due to a public power emergency, so for +# now we'll assume it's for this year only. +# +# From Paul Eggert (2006-03-22): +# <a href="http://www.spicasc.net/horvera.html"> +# Hora de verano para la Republica Argentina (2003-06-08) +# </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 & Pottenger. +# +# From Mariano Absatz (2004-06-05): +# These media articles from a major newspaper mostly cover the current state: +# http://www.lanacion.com.ar/04/05/27/de_604825.asp +# http://www.lanacion.com.ar/04/05/28/de_605203.asp +# +# The following eight (8) provinces pulled clocks back to UTC-04:00 at +# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). +# Apparently, all nine provinces would go back to UTC-03:00 at the same +# time in October 17th. +# +# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, +# Tierra del Fuego, Tucuman. +# +# From Mariano Absatz (2004-06-14): +# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 +# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's +# annoyance with the change is much higher than the power savings obtained.... +# +# From Gwillim Law (2004-06-14): +# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... +# "The time change in Tierra del Fuego was a conflicted decision from +# the start. The government had decreed that the measure would take +# effect on June 1, but a normative error forced the new time to begin +# three days earlier, from a Saturday to a Sunday.... +# Our understanding was that the change was originally scheduled to take place +# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other +# provinces). Sunday was May 30, only two days earlier. So the article +# contains a contradiction. I would give more credence to the Saturday/Sunday +# date than the "three days earlier" phrase, and conclude that Tierra del +# Fuego set its clocks back at 2004-05-30 00:00. +# +# From Steffen Thorsen (2004-10-05): +# The previous law 7210 which changed the province of Mendoza's time zone +# back in May have been modified slightly in a new law 7277, which set the +# new end date to 2004-09-26 (original date was 2004-10-17). +# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf +# +# From Mariano Absatz (2004-10-05): +# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between +# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 +# at midnight between Saturday, July 24th and Sunday, July 25th.... +# http://www.sanjuan.gov.ar/prensa/archivo/000329.html +# http://www.sanjuan.gov.ar/prensa/archivo/000426.html +# http://www.sanjuan.gov.ar/prensa/archivo/000441.html + +# From Alex Krivenyshev (2008-01-17): +# Here are articles that Argentina Province San Luis is planning to end DST +# as earlier as upcoming Monday January 21, 2008 or February 2008: +# +# Provincia argentina retrasa reloj y marca diferencia con resto del pais +# (Argentine Province delayed clock and mark difference with the rest of the +# country) +# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> +# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel +# </a> +# +# Es inminente que en San Luis atrasen una hora los relojes +# (It is imminent in San Luis clocks one hour delay) +# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> +# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 +# </a> +# +# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> +# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html +# </a> + +# From Jesper Norgaard Welen (2008-01-18): +# The page of the San Luis provincial government +# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> +# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 +# </a> +# confirms what Alex Krivenyshev has earlier sent to the tz +# emailing list about that San Luis plans to return to standard +# time much earlier than the rest of the country. It also +# confirms that upon request the provinces San Juan and Mendoza +# refused to follow San Luis in this change. +# +# The change is supposed to take place Monday the 21.st at 0:00 +# hours. As far as I understand it if this goes ahead, we need +# a new timezone for San Luis (although there are also documented +# independent changes in the southamerica file of San Luis in +# 1990 and 1991 which has not been confirmed). + +# From Jesper Norgaard Welen (2008-01-25): +# Unfortunately the below page has become defunct, about the San Luis +# time change. Perhaps because it now is part of a group of pages "Most +# important pages of 2008." +# +# You can use +# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> +# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 +# </a> +# instead it seems. Or use "Buscador" from the main page of the San Luis +# government, and fill in "huso" and click OK, and you will get 3 pages +# from which the first one is identical to the above. + +# From Mariano Absatz (2008-01-28): +# I can confirm that the Province of San Luis (and so far only that +# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 +# (that is, Monday 21st at 0:00 is the time the clocks were delayed back +# 1 hour), and they intend to keep UTC-3 as their timezone all year round +# (that is, unless they change their mind any minute now). +# +# So we'll have to add yet another city to 'southamerica' (I think San +# Luis city is the mos populated city in the Province, so it'd be +# America/Argentina/San_Luis... of course I can't remember if San Luis's +# history of particular changes goes along with Mendoza or San Juan :-( +# (I only remember not being able to collect hard facts about San Luis +# back in 2004, when these provinces changed to UTC-4 for a few days, I +# mailed them personally and never got an answer). + +# From Arthur David Olson (2008-03-15): +# Until there's better information, asssume San Luis was like San Juan +# rather than Mendoza (since San Juan has a simpler DST history). + +# Unless otherwise specified, data are from Shanks & Pottenger through 1992, +# from the IATA otherwise. As noted below, Shanks & Pottenger say that +# America/Cordoba split into 6 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), +Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May # Cordoba Mean Time + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 Arg AR%sT +# +# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), +# Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), +# San Luis (SL), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) +# +# Shanks & Pottenger also make the following claims, which we haven't verified: +# - Formosa switched to -3:00 on 1991-01-07. +# - 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. +# +Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1991 Mar 3 + -4:00 - WART 1991 Oct 20 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 Arg AR%sT +# +# Tucuman (TM) +Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1991 Mar 3 + -4:00 - WART 1991 Oct 20 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 Jun 1 + -4:00 - WART 2004 Jun 13 + -3:00 Arg AR%sT +# +# La Rioja (LR) +Zone America/Argentina/La_Rioja -4:27:24 - 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 1 + -4:00 - WART 1991 May 7 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 Jun 1 + -4:00 - WART 2004 Jun 20 + -3:00 Arg AR%sT +# +# San Juan (SJ) +Zone America/Argentina/San_Juan -4:34:04 - 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 1 + -4:00 - WART 1991 May 7 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 May 31 + -4:00 - WART 2004 Jul 25 + -3:00 Arg AR%sT +# +# Jujuy (JY) +Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1990 Mar 4 + -4:00 - WART 1990 Oct 28 + -4:00 1:00 WARST 1991 Mar 17 + -4:00 - WART 1991 Oct 6 + -3:00 1:00 ARST 1992 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 Arg AR%sT +# +# Catamarca (CT), Chubut (CH) +Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1991 Mar 3 + -4:00 - WART 1991 Oct 20 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 Jun 1 + -4:00 - WART 2004 Jun 20 + -3:00 Arg AR%sT +# +# Mendoza (MZ) +Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1990 Mar 4 + -4:00 - WART 1990 Oct 15 + -4:00 1:00 WARST 1991 Mar 1 + -4:00 - WART 1991 Oct 15 + -4:00 1:00 WARST 1992 Mar 1 + -4:00 - WART 1992 Oct 18 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 May 23 + -4:00 - WART 2004 Sep 26 + -3:00 Arg AR%sT +# +# San Luis (SL) +Zone America/Argentina/San_Luis -4:25:24 - 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 1 + -4:00 - WART 1991 May 7 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 May 31 + -4:00 - WART 2004 Jul 25 + -3:00 Arg AR%sT 2008 Jan 21 + -3:00 - ART +# +# Santa Cruz (SC) +Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May # Cordoba Mean Time + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 Jun 1 + -4:00 - WART 2004 Jun 20 + -3:00 Arg AR%sT +# +# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) +Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May # Cordoba Mean Time + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 May 30 + -4:00 - WART 2004 Jun 20 + -3:00 Arg AR%sT + +# Aruba +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad + -4:30 - ANT 1965 # Netherlands Antilles Time + -4:00 - AST + +# Bolivia +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/La_Paz -4:32:36 - LMT 1890 + -4:32:36 - CMT 1931 Oct 15 # Calamarca MT + -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST + -4:00 - BOT # Bolivia Time + +# Brazil + +# From Paul Eggert (1993-11-18): +# The mayor of Rio recently attempted to change the time zone rules +# just in his city, in order to leave more summer time for the tourist trade. +# The rule change lasted only part of the day; +# the federal government refused to follow the city's rules, and business +# was in a chaos, so the mayor backed down that afternoon. + +# From IATA SSIM (1996-02): +# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), +# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), +# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), +# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. +# [The last three states are new to this issue of the IATA SSIM.] + +# From Gwillim Law (1996-10-07): +# Geography, history (Tocantins was part of Goias until 1989), and other +# sources of time zone information lead me to believe that AL, SE, and TO were +# always in BR1, and so the only change was whether or not they observed DST.... +# The earliest issue of the SSIM I have is 2/91. Each issue from then until +# 9/95 says that DST is observed only in the ten states I quoted from 9/95, +# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 +# (UTC-4).... The other two time zones given for Brazil are BR3, which is +# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is +# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's +# become part of the state of Pernambuco). The boundary between BR1 and BR2 +# has never been clearly stated. They've simply been called East and West. +# However, some conclusions can be drawn from another IATA manual: the Airline +# Coding Directory, which lists close to 400 airports in Brazil. For each +# airport it gives a time zone which is coded to the SSIM. From that +# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), +# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do +# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. + +# From Marcos Tadeu (1998-09-27): +# <a href="http://pcdsh01.on.br/verao1.html"> +# Brazilian official page +# </a> + +# From Jesper Norgaard (2000-11-03): +# [For an official list of which regions in Brazil use which time zones, see:] +# http://pcdsh01.on.br/Fusbr.htm +# http://pcdsh01.on.br/Fusbrhv.htm + +# From Celso Doria via David Madeo (2002-10-09): +# The reason for the delay this year has to do with elections in Brazil. +# +# Unlike in the United States, elections in Brazil are 100% computerized and +# the results are known almost immediately. Yesterday, it was the first +# round of the elections when 115 million Brazilians voted for President, +# Governor, Senators, Federal Deputies, and State Deputies. Nobody is +# counting (or re-counting) votes anymore and we know there will be a second +# round for the Presidency and also for some Governors. The 2nd round will +# take place on October 27th. +# +# The reason why the DST will only begin November 3rd is that the thousands +# of electoral machines used cannot have their time changed, and since the +# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, +# the Government decided to postpone DST, instead of changing the Constitution +# (maybe, for the next elections, it will be possible to change the clock)... + +# From Rodrigo Severo (2004-10-04): +# It's just the biannual change made necessary by the much hyped, supposedly +# modern Brazilian eletronic voting machines which, apparently, can't deal +# with a time change between the first and the second rounds of the elections. + +# From Steffen Thorsen (2007-09-20): +# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: +# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 + +# 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>. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) +# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) +Rule Brazil 1931 only - Oct 3 11:00 1:00 S +Rule Brazil 1932 1933 - Apr 1 0:00 0 - +Rule Brazil 1932 only - Oct 3 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) +# revoked DST. +# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) +# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) +Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S +Rule Brazil 1950 only - Apr 16 1:00 0 - +Rule Brazil 1951 1952 - Apr 1 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) +Rule Brazil 1953 only - Mar 1 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) +# revoked DST. +# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) +# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 +# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. +# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) +# extended the above decree to all of the national territory on 12-09. +Rule Brazil 1963 only - Dec 9 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) +# extended summer time by one day to 1964-03-01 00:00 (start of school). +Rule Brazil 1964 only - Mar 1 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) +Rule Brazil 1965 only - Jan 31 0:00 1:00 S +Rule Brazil 1965 only - Mar 31 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) +Rule Brazil 1965 only - Dec 1 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) +Rule Brazil 1966 1968 - Mar 1 0:00 0 - +Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) +# revoked DST. +# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) +Rule Brazil 1985 only - Nov 2 0:00 1:00 S +# Decree 92,310 (1986-01-21) +# Decree 92,463 (1986-03-13) +Rule Brazil 1986 only - Mar 15 0:00 0 - +# Decree 93,316 (1986-10-01) +Rule Brazil 1986 only - Oct 25 0:00 1:00 S +Rule Brazil 1987 only - Feb 14 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) +Rule Brazil 1987 only - Oct 25 0:00 1:00 S +Rule Brazil 1988 only - Feb 7 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) +# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) +Rule Brazil 1988 only - Oct 16 0:00 1:00 S +Rule Brazil 1989 only - Jan 29 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) +# with the same exceptions +Rule Brazil 1989 only - Oct 15 0:00 1:00 S +Rule Brazil 1990 only - Feb 11 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) +# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. +# Decree 99,629 (1990-10-19) adds BA, MT. +Rule Brazil 1990 only - Oct 21 0:00 1:00 S +Rule Brazil 1991 only - Feb 17 0:00 0 - +# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) +# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. +Rule Brazil 1991 only - Oct 20 0:00 1:00 S +Rule Brazil 1992 only - Feb 9 0:00 0 - +# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) +# adopted by same states. +Rule Brazil 1992 only - Oct 25 0:00 1:00 S +Rule Brazil 1993 only - Jan 31 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) +# adopted by same states, plus AM. +# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; +# web page corrected 2004-01-07) 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 MT and TO. +# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) +# adds AL, SE. +Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S +Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - +Rule Brazil 1996 only - Feb 11 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) +# adopted by same states, minus AL, SE. +Rule Brazil 1996 only - Oct 6 0:00 1:00 S +Rule Brazil 1997 only - Feb 16 0:00 0 - +# From Daniel C. Sobral (1998-02-12): +# In 1997, the DS began on October 6. The stated reason was that +# because international television networks ignored Brazil's policy on DS, +# they bought the wrong times on satellite for coverage of Pope's visit. +# This year, the ending date of DS was postponed to March 1 +# to help dealing with the shortages of electric power. +# +# Decree 2,317 (1997-09-04), adopted by same states. +Rule Brazil 1997 only - Oct 6 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> +# (1998-02-10) +Rule Brazil 1998 only - Mar 1 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) +# adopted by the same states as before. +Rule Brazil 1998 only - Oct 11 0:00 1:00 S +Rule Brazil 1999 only - Feb 21 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> +# (1999-08-23) adopted by same states. +# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) +# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. +Rule Brazil 1999 only - Oct 3 0:00 1:00 S +Rule Brazil 2000 only - Feb 27 0:00 0 - +# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) +# adopted by the same states as before. +# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) +# repeals DST in PE and RR, effective 2000-10-15 00:00. +# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) +# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. +# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> +# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. +Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S +Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - +# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. +# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm"></a> +Rule Brazil 2002 only - Nov 3 0:00 1:00 S +# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. +# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm"></a> +Rule Brazil 2003 only - Oct 19 0:00 1:00 S +# Decree 5,223 (2004-10-01) reestablishes DST in MT. +# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm"></a> +Rule Brazil 2004 only - Nov 2 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), +# adopted by the same states as before. +Rule Brazil 2005 only - Oct 16 0:00 1:00 S +# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), +# adopted by the same states as before. +Rule Brazil 2006 only - Nov 5 0:00 1:00 S +Rule Brazil 2007 only - Feb 25 0:00 0 - +# (Decree number not yet known) +# http://www.brasil.gov.br/noticias/ultimas_noticias/horario_verao070920/ +# (2007-09-20) after a heads-up from Steffen Thorsen: +Rule Brazil 2007 max - Oct Sun>=8 0:00 1:00 S +Rule Brazil 2008 max - Feb Sun>=15 0:00 0 - +# The latest ruleset listed above says that the following states observe DST: +# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. +# For dates after mid-2008, the above rules with TO="max" are guesses +# and are quite possibly wrong, but are more likely than no DST at all. + + +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# +# Fernando de Noronha (administratively part of PE) +Zone America/Noronha -2:09:40 - LMT 1914 + -2:00 Brazil FN%sT 1990 Sep 17 + -2:00 - FNT 1999 Sep 30 + -2:00 Brazil FN%sT 2000 Oct 15 + -2:00 - FNT 2001 Sep 13 + -2:00 Brazil FN%sT 2002 Oct 1 + -2:00 - FNT +# Other Atlantic islands have no permanent settlement. +# These include Trindade and Martin Vaz (administratively part of ES), +# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). +# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; +# it also included the Penedos. +# +# Amapa (AP), east Para (PA) +# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. +# The division between east and west Para is the river Xingu. +# In the north a very small part from the river Javary (now Jari I guess, +# the border with Amapa) to the Amazon, then to the Xingu. +Zone America/Belem -3:13:56 - LMT 1914 + -3:00 Brazil BR%sT 1988 Sep 12 + -3:00 - BRT +# +# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), +# Paraiba (PB) +Zone America/Fortaleza -2:34:00 - LMT 1914 + -3:00 Brazil BR%sT 1990 Sep 17 + -3:00 - BRT 1999 Sep 30 + -3:00 Brazil BR%sT 2000 Oct 22 + -3:00 - BRT 2001 Sep 13 + -3:00 Brazil BR%sT 2002 Oct 1 + -3:00 - BRT +# +# Pernambuco (PE) (except Atlantic islands) +Zone America/Recife -2:19:36 - LMT 1914 + -3:00 Brazil BR%sT 1990 Sep 17 + -3:00 - BRT 1999 Sep 30 + -3:00 Brazil BR%sT 2000 Oct 15 + -3:00 - BRT 2001 Sep 13 + -3:00 Brazil BR%sT 2002 Oct 1 + -3:00 - BRT +# +# Tocantins (TO) +Zone America/Araguaina -3:12:48 - LMT 1914 + -3:00 Brazil BR%sT 1990 Sep 17 + -3:00 - BRT 1995 Sep 14 + -3:00 Brazil BR%sT 2003 Sep 24 + -3:00 - BRT +# +# Alagoas (AL), Sergipe (SE) +Zone America/Maceio -2:22:52 - LMT 1914 + -3:00 Brazil BR%sT 1990 Sep 17 + -3:00 - BRT 1995 Oct 13 + -3:00 Brazil BR%sT 1996 Sep 4 + -3:00 - BRT 1999 Sep 30 + -3:00 Brazil BR%sT 2000 Oct 22 + -3:00 - BRT 2001 Sep 13 + -3:00 Brazil BR%sT 2002 Oct 1 + -3:00 - BRT +# +# Bahia (BA) +# There are too many Salvadors elsewhere, so use America/Bahia instead +# of America/Salvador. +Zone America/Bahia -2:34:04 - LMT 1914 + -3:00 Brazil BR%sT 2003 Sep 24 + -3:00 - BRT +# +# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), +# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), +# Santa Catarina (SC), Rio Grande do Sul (RS) +Zone America/Sao_Paulo -3:06:28 - LMT 1914 + -3:00 Brazil BR%sT 1963 Oct 23 00:00 + -3:00 1:00 BRST 1964 + -3:00 Brazil BR%sT +# +# Mato Grosso do Sul (MS) +Zone America/Campo_Grande -3:38:28 - LMT 1914 + -4:00 Brazil AM%sT +# +# Mato Grosso (MT) +Zone America/Cuiaba -3:44:20 - LMT 1914 + -4:00 Brazil AM%sT 2003 Sep 24 + -4:00 - AMT 2004 Oct 1 + -4:00 Brazil AM%sT +# +# west Para (PA), Rondonia (RO) +# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. +Zone America/Porto_Velho -4:15:36 - LMT 1914 + -4:00 Brazil AM%sT 1988 Sep 12 + -4:00 - AMT +# +# Roraima (RR) +Zone America/Boa_Vista -4:02:40 - LMT 1914 + -4:00 Brazil AM%sT 1988 Sep 12 + -4:00 - AMT 1999 Sep 30 + -4:00 Brazil AM%sT 2000 Oct 15 + -4:00 - AMT +# +# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto +# The great circle line from Tabatinga to Porto Acre divides +# east from west Amazonas. +Zone America/Manaus -4:00:04 - LMT 1914 + -4:00 Brazil AM%sT 1988 Sep 12 + -4:00 - AMT 1993 Sep 28 + -4:00 Brazil AM%sT 1994 Sep 22 + -4:00 - AMT +# +# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, +# Eirunepe, Envira, Ipixuna +Zone America/Eirunepe -4:39:28 - LMT 1914 + -5:00 Brazil AC%sT 1988 Sep 12 + -5:00 - ACT 1993 Sep 28 + -5:00 Brazil AC%sT 1994 Sep 22 + -5:00 - ACT +# +# Acre (AC) +Zone America/Rio_Branco -4:31:12 - LMT 1914 + -5:00 Brazil AC%sT 1988 Sep 12 + -5:00 - ACT + + +# Chile + +# From Eduardo Krell (1995-10-19): +# The law says to switch to DST at midnight [24:00] on the second SATURDAY +# of October.... The law is the same for March and October. +# (1998-09-29): +# Because of the drought this year, the government decided to go into +# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... +# (unless there's another dry season next year, I guess). + +# From Julio I. Pacheco Troncoso (1999-03-18): +# Because of the same drought, the government decided to end DST later, +# on April 3, (one-time change). + +# From Oscar van Vlijmen (2006-10-08): +# http://www.horaoficial.cl/cambio.htm + +# From Jesper Norgaard Welen (2006-10-08): +# I think that there are some obvious mistakes in the suggested link +# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 +# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 +# (they should have been 1990-09-15 and 1990-09-16 respectively), but +# anyhow it clears up some doubts too. + +# From Paul Eggert (2006-12-27): +# 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 +# & Pottenger, except with DST transitions after 1932 cloned from +# America/Santiago. The pre-1980 Pacific/Easter data are dubious, +# but we have no other source. + +# From German Poo-Caaman~o (2008-03-03): +# Due to drought, Chile extends Daylight Time in three weeks. This +# is one-time change (Saturday 3/29 at 24:00 for America/Santiago +# and Saturday 3/29 at 22:00 for Pacific/Easter) +# The Supreme Decree is located at +# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> +# http://www.shoa.cl/servicios/supremo316.pdf +# </a> +# and the instructions for 2008 are located in: +# <a href="http://www.horaoficial.cl/cambio.htm"> +# http://www.horaoficial.cl/cambio.htm +# </a>. + +# From José Miguel Garrido (2008-03-05): +# ... +# You could see the announces of the change on +# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> +# http://www.shoa.cl/noticias/2008/04hora/hora.htm +# </a>. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Chile 1927 1932 - Sep 1 0:00 1:00 S +Rule Chile 1928 1932 - Apr 1 0:00 0 - +Rule Chile 1942 only - Jun 1 4:00u 0 - +Rule Chile 1942 only - Aug 1 5:00u 1:00 S +Rule Chile 1946 only - Jul 15 4:00u 1:00 S +Rule Chile 1946 only - Sep 1 3:00u 0:00 - +Rule Chile 1947 only - Apr 1 4:00u 0 - +Rule Chile 1968 only - Nov 3 4:00u 1:00 S +Rule Chile 1969 only - Mar 30 3:00u 0 - +Rule Chile 1969 only - Nov 23 4:00u 1:00 S +Rule Chile 1970 only - Mar 29 3:00u 0 - +Rule Chile 1971 only - Mar 14 3:00u 0 - +Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S +Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - +Rule Chile 1973 only - Sep 30 4:00u 1:00 S +Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S +Rule Chile 1987 only - Apr 12 3:00u 0 - +Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - +Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S +Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S +Rule Chile 1990 only - Mar 18 3:00u 0 - +Rule Chile 1990 only - Sep 16 4:00u 1:00 S +Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - +Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S +Rule Chile 1997 only - Mar 30 3:00u 0 - +Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - +Rule Chile 1998 only - Sep 27 4:00u 1:00 S +Rule Chile 1999 only - Apr 4 3:00u 0 - +Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S +Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - +# N.B.: the end of March 29 in Chile is March 30 in Universal time, +# which is used below in specifying the transition. +Rule Chile 2008 only - Mar 30 3:00u 0 - +Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - +# IATA SSIM anomalies: (1992-02) says 1992-03-14; +# (1996-09) says 1998-03-08. Ignore these. +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Santiago -4:42:46 - LMT 1890 + -4:42:46 - SMT 1910 # Santiago Mean Time + -5:00 - CLT 1916 Jul 1 # Chile Time + -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time + -4:00 - CLT 1919 Jul 1 # Chile Time + -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time + -5:00 Chile CL%sT 1947 May 22 # Chile Time + -4:00 Chile CL%sT +Zone Pacific/Easter -7:17:44 - LMT 1890 + -7:17:28 - EMT 1932 Sep # Easter Mean Time + -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time + -6:00 Chile EAS%sT +# +# Sala y Gomez Island is like Pacific/Easter. +# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, +# San Felix, and Antarctic bases, are like America/Santiago. + +# Colombia +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule CO 1992 only - May 3 0:00 1:00 S +Rule CO 1993 only - Apr 4 0:00 0 - +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 + -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time + -5:00 CO CO%sT # Colombia Time +# Malpelo, Providencia, San Andres +# no information; probably like America/Bogota + +# Curacao +# +# From Paul Eggert (2006-03-22): +# Shanks & Pottenger say that The Bottom and Philipsburg have been at +# -4:00 since standard time was introduced on 1912-03-02; and that +# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from +# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say +# Saba Island has been like Curacao. +# This all predates our 1970 cutoff, though. +# +# By July 2007 Curacao and St Maarten are planned to become +# associated states within the Netherlands, much like Aruba; +# Bonaire, Saba and St Eustatius would become directly part of the +# Netherlands as Kingdom Islands. This won't affect their time zones +# though, as far as we know. +# +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad + -4:30 - ANT 1965 # Netherlands Antilles Time + -4:00 - AST + +# Ecuador +# +# From Paul Eggert (2007-03-04): +# Apparently Ecuador had a failed experiment with DST in 1992. +# <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 +# talk about "hora Sixto". Leave this alone for now, as we have no data. +# +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Guayaquil -5:19:20 - LMT 1890 + -5:14:00 - QMT 1931 # Quito Mean Time + -5:00 - ECT # Ecuador Time +Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno + -5:00 - ECT 1986 + -6:00 - GALT # Galapagos Time + +# Falklands + +# From Paul Eggert (2006-03-22): +# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except +# the IATA gives 1996-09-08. Go with Shanks & Pottenger. + +# From Falkland Islands Government Office, London (2001-01-22) +# via Jesper Norgaard: +# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 +# April 2001 and advance one hour to summer time at 2 am on Sunday 2 +# September. It is anticipated that the clocks will revert back at 2 +# am on Sunday 21 April 2002 and advance to summer time at 2 am on +# Sunday 1 September. + +# From Rives McDow (2001-02-13): +# +# I have communicated several times with people there, and the last +# time I had communications that was helpful was in 1998. Here is +# what was said then: +# +# "The general rule was that Stanley used daylight saving and the Camp +# did not. However for various reasons many people in the Camp have +# started to use daylight saving (known locally as 'Stanley Time') +# There is no rule as to who uses daylight saving - it is a matter of +# personal choice and so it is impossible to draw a map showing who +# uses it and who does not. Any list would be out of date as soon as +# it was produced. This year daylight saving ended on April 18/19th +# and started again on September 12/13th. I do not know what the rule +# is, but can find out if you like. We do not change at the same time +# as UK or Chile." +# +# I did have in my notes that the rule was "Second Saturday in Sep at +# 0:00 until third Saturday in Apr at 0:00". I think that this does +# not agree in some cases with Shanks; is this true? +# +# Also, there is no mention in the list that some areas in the +# Falklands do not use DST. I have found in my communications there +# that these areas are on the western half of East Falkland and all of +# West Falkland. Stanley is the only place that consistently observes +# DST. Again, as in other places in the world, the farmers don't like +# it. West Falkland is almost entirely sheep farmers. +# +# I know one lady there that keeps a list of which farm keeps DST and +# which doesn't each year. She runs a shop in Stanley, and says that +# the list changes each year. She uses it to communicate to her +# customers, catching them when they are home for lunch or dinner. + +# From Paul Eggert (2001-03-05): +# For now, we'll just record the time in Stanley, since we have no +# better info. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S +Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - +Rule Falk 1939 only - Oct 1 0:00 1:00 S +Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S +Rule Falk 1943 only - Jan 1 0:00 0 - +Rule Falk 1983 only - Sep lastSun 0:00 1:00 S +Rule Falk 1984 1985 - Apr lastSun 0:00 0 - +Rule Falk 1984 only - Sep 16 0:00 1:00 S +Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S +Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - +Rule Falk 2001 max - Apr Sun>=15 2:00 0 - +Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Atlantic/Stanley -3:51:24 - LMT 1890 + -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time + -4:00 Falk FK%sT 1983 May # Falkland Is Time + -3:00 Falk FK%sT 1985 Sep 15 + -4:00 Falk FK%sT + +# French Guiana +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Cayenne -3:29:20 - LMT 1911 Jul + -4:00 - GFT 1967 Oct # French Guiana Time + -3:00 - GFT + +# Guyana +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown + -3:45 - GBGT 1966 May 26 # Br Guiana Time + -3:45 - GYT 1975 Jul 31 # Guyana Time + -3:00 - GYT 1991 +# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. + -4:00 - GYT + +# Paraguay +# From Paul Eggert (2006-03-22): +# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, +# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 +# editions of Shanks, and with the IATA, who say transitions occur at 00:00. +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Para 1975 1988 - Oct 1 0:00 1:00 S +Rule Para 1975 1978 - Mar 1 0:00 0 - +Rule Para 1979 1991 - Apr 1 0:00 0 - +Rule Para 1989 only - Oct 22 0:00 1:00 S +Rule Para 1990 only - Oct 1 0:00 1:00 S +Rule Para 1991 only - Oct 6 0:00 1:00 S +Rule Para 1992 only - Mar 1 0:00 0 - +Rule Para 1992 only - Oct 5 0:00 1:00 S +Rule Para 1993 only - Mar 31 0:00 0 - +Rule Para 1993 1995 - Oct 1 0:00 1:00 S +Rule Para 1994 1995 - Feb lastSun 0:00 0 - +Rule Para 1996 only - Mar 1 0:00 0 - +# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. +# From Steffen Thorsen (2000-10-02): +# I have three independent reports that Paraguay changed to DST this Sunday +# (10-01). +# +# Translated by Gwillim Law (2001-02-27) from +# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> +# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) +# </a>: +# Starting at 0:00 today, the clock will be set forward 60 minutes, in +# fulfillment of Decree No. 7,273 of the Executive Power.... The time change +# system has been operating for several years. Formerly there was a separate +# decree each year; the new law has the same effect, but permanently. Every +# year, the time will change on the first Sunday of October; likewise, the +# clock will be set back on the first Sunday of March. +# +Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S +# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. +Rule Para 1997 only - Feb lastSun 0:00 0 - +# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but +# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). +Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - +# From Rives McDow (2002-02-28): +# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the +# dst method to be from the first Sunday in September to the first Sunday in +# April. +Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - +Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S +# +# From Jesper Norgaard Welen (2005-01-02): +# There are several sources that claim that Paraguay made +# a timezone rule change in autumn 2004. +# From Steffen Thorsen (2005-01-05): +# Decree 1,867 (2004-03-05) +# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) +# <http://www.presidencia.gov.py/decretos/D1867.pdf> +Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S +Rule Para 2005 max - Mar Sun>=8 0:00 0 - + +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Asuncion -3:50:40 - LMT 1890 + -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time + -4:00 - PYT 1972 Oct # Paraguay Time + -3:00 - PYT 1974 Apr + -4:00 Para PY%sT + +# Peru +# +# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> +# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> +# When we were in Peru in 1985-1986, they apparently switched over +# sometime between December 29 and January 3 while we were on the Amazon. +# +# From Paul Eggert (2006-03-22): +# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Peru 1938 only - Jan 1 0:00 1:00 S +Rule Peru 1938 only - Apr 1 0:00 0 - +Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S +Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - +Rule Peru 1986 1987 - Jan 1 0:00 1:00 S +Rule Peru 1986 1987 - Apr 1 0:00 0 - +Rule Peru 1990 only - Jan 1 0:00 1:00 S +Rule Peru 1990 only - Apr 1 0:00 0 - +# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. +Rule Peru 1994 only - Jan 1 0:00 1:00 S +Rule Peru 1994 only - Apr 1 0:00 0 - +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Lima -5:08:12 - LMT 1890 + -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? + -5:00 Peru PE%sT # Peru Time + +# South Georgia +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken + -2:00 - GST # South Georgia Time + +# South Sandwich Is +# uninhabited; scientific personnel have wintered + +# Suriname +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Paramaribo -3:40:40 - LMT 1911 + -3:40:52 - PMT 1935 # Paramaribo Mean Time + -3:40:36 - PMT 1945 Oct # The capital moved? + -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time + -3:30 - SRT 1984 Oct # Suriname Time + -3:00 - SRT + +# Trinidad and Tobago +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 + -4:00 - AST + +# Uruguay +# From Paul Eggert (1993-11-18): +# Uruguay wins the prize for the strangest peacetime manipulation of the rules. +# From Shanks & Pottenger: +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. +Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS +Rule Uruguay 1924 1926 - Apr 1 0:00 0 - +Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS +Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS +# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. +Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - +Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS +Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - +# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. +Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS +# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, +# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. +Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS +Rule Uruguay 1942 only - Jan 1 0:00 0 - +Rule Uruguay 1942 only - Dec 14 0:00 1:00 S +Rule Uruguay 1943 only - Mar 14 0:00 0 - +Rule Uruguay 1959 only - May 24 0:00 1:00 S +Rule Uruguay 1959 only - Nov 15 0:00 0 - +Rule Uruguay 1960 only - Jan 17 0:00 1:00 S +Rule Uruguay 1960 only - Mar 6 0:00 0 - +Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S +Rule Uruguay 1965 only - Sep 26 0:00 0 - +Rule Uruguay 1966 1967 - Oct 31 0:00 0 - +Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS +Rule Uruguay 1968 1970 - Dec 2 0:00 0 - +Rule Uruguay 1972 only - Apr 24 0:00 1:00 S +Rule Uruguay 1972 only - Aug 15 0:00 0 - +Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS +Rule Uruguay 1974 only - Dec 22 0:00 1:00 S +Rule Uruguay 1976 only - Oct 1 0:00 0 - +Rule Uruguay 1977 only - Dec 4 0:00 1:00 S +Rule Uruguay 1978 only - Apr 1 0:00 0 - +Rule Uruguay 1979 only - Oct 1 0:00 1:00 S +Rule Uruguay 1980 only - May 1 0:00 0 - +Rule Uruguay 1987 only - Dec 14 0:00 1:00 S +Rule Uruguay 1988 only - Mar 14 0:00 0 - +Rule Uruguay 1988 only - Dec 11 0:00 1:00 S +Rule Uruguay 1989 only - Mar 12 0:00 0 - +Rule Uruguay 1989 only - Oct 29 0:00 1:00 S +# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, +# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. +Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - +Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S +Rule Uruguay 1992 only - Oct 18 0:00 1:00 S +Rule Uruguay 1993 only - Feb 28 0:00 0 - +# From Eduardo Cota (2004-09-20): +# The uruguayan government has decreed a change in the local time.... +# http://www.presidencia.gub.uy/decretos/2004091502.htm +Rule Uruguay 2004 only - Sep 19 0:00 1:00 S +# From Steffen Thorsen (2005-03-11): +# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to +# save energy ... it was postponed two weeks.... +# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm +Rule Uruguay 2005 only - Mar 27 2:00 0 - +# From Eduardo Cota (2005-09-27): +# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF +# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at +# 02:00 local time, official time in Uruguay will be at GMT -2. +Rule Uruguay 2005 only - Oct 9 2:00 1:00 S +Rule Uruguay 2006 only - Mar 12 2:00 0 - +# From Jesper Norgaard Welen (2006-09-06): +# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF +Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S +Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 + -3:44:44 - MMT 1920 May 1 # Montevideo MT + -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time + -3:00 Uruguay UY%sT + +# Venezuela +# +# From John Stainforth (2007-11-28): +# ... the change for Venezuela originally expected for 2007-12-31 has +# been brought forward to 2007-12-09. The official announcement was +# published today in the "Gaceta Oficial de la Republica Bolivariana +# de Venezuela, numero 38.819" (official document for all laws or +# resolution publication) +# http://www.globovision.com/news.php?nid=72208 + +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Caracas -4:27:44 - LMT 1890 + -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? + -4:30 - VET 1965 # Venezuela Time + -4:00 - VET 2007 Dec 9 03:00 + -4:30 - VET |