f743002678eb67b99bbc29fee116b65d9530fec0wrowe#ident "%Z%%M% %I% %E% SMI"

80833bb9a1bf25dcf19e814438a4b311d2e1f4cffuankg

a34684a59b60a4173c25035d0c627ef17e6dc215rpluem# @(#)southamerica 7.55

1337c7673efc1f80f634139fbad7cbb98a0dc657ylavic

1337c7673efc1f80f634139fbad7cbb98a0dc657ylavic# This data is by no means authoritative; if you think you know better,

1337c7673efc1f80f634139fbad7cbb98a0dc657ylavic# go ahead and edit the file (and please send any changes to

1337c7673efc1f80f634139fbad7cbb98a0dc657ylavic# tz@elsie.nci.nih.gov for general use in the future).

4da61833a1cbbca94094f9653fd970582b97a72etrawick

4da61833a1cbbca94094f9653fd970582b97a72etrawick# From Paul Eggert <eggert@twinsun.com> (1999-07-07):

4da61833a1cbbca94094f9653fd970582b97a72etrawick# A good source for time zone historical data outside the U.S. is

4da61833a1cbbca94094f9653fd970582b97a72etrawick# Thomas G. Shanks, The International Atlas (5th edition),

4da61833a1cbbca94094f9653fd970582b97a72etrawick# San Diego: ACS Publications, Inc. (1999).

4789804be088bcd86ae637a29cdb7fda25169521jailletc#

4789804be088bcd86ae637a29cdb7fda25169521jailletc# Gwillim Law writes that a good source

4789804be088bcd86ae637a29cdb7fda25169521jailletc# for recent time zone data is the International Air Transport

4789804be088bcd86ae637a29cdb7fda25169521jailletc# Association's Standard Schedules Information Manual (IATA SSIM),

e50c3026198fd496f183cda4c32a202925476778covener# published semiannually. Law sent in several helpful summaries

e50c3026198fd496f183cda4c32a202925476778covener# of the IATA's data after 1990.

e50c3026198fd496f183cda4c32a202925476778covener#

5b88c8507d5ef6d0c4cfbc78230294968175b638minfrin# Except where otherwise noted, Shanks is the source for entries through 1990,

5b88c8507d5ef6d0c4cfbc78230294968175b638minfrin# and IATA SSIM is the source for entries after 1990.

6c3b9cebb551140fbb25d58bae08b539b3802133ylavic#

6c3b9cebb551140fbb25d58bae08b539b3802133ylavic# Earlier editions of these tables used the North American style (e.g. ARST and

6c3b9cebb551140fbb25d58bae08b539b3802133ylavic# ARDT for Argentine Standard and Daylight Time), but the following quote

4f29b65ab4b547ad5dbe506e2d0ff5d12ead9247ylavic# suggests that it's better to use European style (e.g. ART and ARST).

4f29b65ab4b547ad5dbe506e2d0ff5d12ead9247ylavic# I suggest the use of _Summer time_ instead of the more cumbersome

0a0df13b7f1f4f1a74fe295253d89ca3911b301aylavic# _daylight-saving time_. _Summer time_ seems to be in general use

0a0df13b7f1f4f1a74fe295253d89ca3911b301aylavic# in Europe and South America.

0a0df13b7f1f4f1a74fe295253d89ca3911b301aylavic# -- E O Cutler, _New York Times_ (1937-02-14), quoted in

0a0df13b7f1f4f1a74fe295253d89ca3911b301aylavic# H L Mencken, _The American Language: Supplement I_ (1960), p 466

69301145375a889e7e37caf7cc7321ac0f91801erpluem#

69301145375a889e7e37caf7cc7321ac0f91801erpluem# Earlier editions of these tables also used the North American style

69301145375a889e7e37caf7cc7321ac0f91801erpluem# for time zones in Brazil, but this was incorrect, as Brazilians say

506bfe33206b2fece40ef25f695af39dd4130facjkaluza# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in

506bfe33206b2fece40ef25f695af39dd4130facjkaluza# the railroad sector, writes (1999-07-06):

506bfe33206b2fece40ef25f695af39dd4130facjkaluza# The subject of time zones is currently a matter of discussion/debate in

506bfe33206b2fece40ef25f695af39dd4130facjkaluza# Brazil. Let's say that "the Brasilia time" is considered the

d58a848a016d401b965111e50ef829e1641f7834minfrin# "official time" because Brasilia is the capital city.

d58a848a016d401b965111e50ef829e1641f7834minfrin# The other three time zones are called "Brasilia time "minus one" or

d58a848a016d401b965111e50ef829e1641f7834minfrin# "plus one" or "plus two". As far as I know there is no such

2e6f4d654c96c98b761fb012fd25c5d5b1558c44sf# name/designation as "Eastern Time" or "Central Time".

2e6f4d654c96c98b761fb012fd25c5d5b1558c44sf# So I invented the following (English-language) abbreviations for now.

2e6f4d654c96c98b761fb012fd25c5d5b1558c44sf# Corrections are welcome!

17e6c95f3b22d18acdf8380fb26a8d0e10c80767ylavic# std dst

17e6c95f3b22d18acdf8380fb26a8d0e10c80767ylavic# -2:00 FNT FNST Fernando de Noronha

17e6c95f3b22d18acdf8380fb26a8d0e10c80767ylavic# -3:00 BRT BRST Brasilia

17e6c95f3b22d18acdf8380fb26a8d0e10c80767ylavic# -4:00 AMT AMST Amazon

17e6c95f3b22d18acdf8380fb26a8d0e10c80767ylavic# -5:00 ACT ACST Acre

e8bd80a4bb88199d2f9a24a50345688e52d9c116ylavic

e8bd80a4bb88199d2f9a24a50345688e52d9c116ylavic###############################################################################

e8bd80a4bb88199d2f9a24a50345688e52d9c116ylavic

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic###############################################################################

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic# Argentina

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic# From Bob Devine (1988-01-28):

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic# Argentina: first Sunday in October to first Sunday in April since 1976.

330e16bea8fe9cace4de90c349750c03dfb1fe64ylavic# Double Summer time from 1969 to 1974. Switches at midnight.

d7205b1a86c51c27b71a2c458dc453fd53a261c1covener

d7205b1a86c51c27b71a2c458dc453fd53a261c1covener# From U. S. Naval Observatory (1988-01-199):

d7205b1a86c51c27b71a2c458dc453fd53a261c1covener# ARGENTINA 3 H BEHIND UTC

d7205b1a86c51c27b71a2c458dc453fd53a261c1covener

d7205b1a86c51c27b71a2c458dc453fd53a261c1covener# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):

44ff304057225e944e220e981d434a046d14cf06covener# I am sending modifications to the Argentine time zone table...

44ff304057225e944e220e981d434a046d14cf06covener# AR was chosen because they are the ISO letters that represent Argentina.

44ff304057225e944e220e981d434a046d14cf06covener

44ff304057225e944e220e981d434a046d14cf06covener# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S

5d1ba75b8794925e67591c209085a49279791de9covenerRule Arg 1930 only - Dec 1 0:00 1:00 S

5d1ba75b8794925e67591c209085a49279791de9covenerRule Arg 1931 only - Apr 1 0:00 0 -

5d1ba75b8794925e67591c209085a49279791de9covenerRule Arg 1931 only - Oct 15 0:00 1:00 S

032982212dbcc7c3cce95bf89c503bb56e185ac7kbrandRule Arg 1932 1940 - Mar 1 0:00 0 -

032982212dbcc7c3cce95bf89c503bb56e185ac7kbrandRule Arg 1932 1939 - Nov 1 0:00 1:00 S

032982212dbcc7c3cce95bf89c503bb56e185ac7kbrandRule Arg 1940 only - Jul 1 0:00 1:00 S

032982212dbcc7c3cce95bf89c503bb56e185ac7kbrandRule Arg 1941 only - Jun 15 0:00 0 -

caad2986f81ab263f7af41467dd622dc9add17f3ylavicRule Arg 1941 only - Oct 15 0:00 1:00 S

caad2986f81ab263f7af41467dd622dc9add17f3ylavicRule Arg 1943 only - Aug 1 0:00 0 -

caad2986f81ab263f7af41467dd622dc9add17f3ylavicRule Arg 1943 only - Oct 15 0:00 1:00 S

caad2986f81ab263f7af41467dd622dc9add17f3ylavicRule Arg 1946 only - Mar 1 0:00 0 -

45a10d38e6051fd7bdf9d742aaae633d97ff02abjailletcRule Arg 1946 only - Oct 1 0:00 1:00 S

f7317ff316c2b141feea31bddb74d5d3fa1584edjortonRule Arg 1963 only - Oct 1 0:00 0 -

f7317ff316c2b141feea31bddb74d5d3fa1584edjortonRule Arg 1963 only - Dec 15 0:00 1:00 S

2165214331e4afafca4048f66f303d0253d7b001covenerRule Arg 1964 1966 - Mar 1 0:00 0 -

a34684a59b60a4173c25035d0c627ef17e6dc215rpluemRule Arg 1964 1966 - Oct 15 0:00 1:00 S

a34684a59b60a4173c25035d0c627ef17e6dc215rpluemRule Arg 1967 only - Apr 2 0:00 0 -

1e2d421a36999d292042a5539971070d54aa6c63ylavicRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S

1e2d421a36999d292042a5539971070d54aa6c63ylavicRule Arg 1968 1969 - Apr Sun>=1 0:00 0 -

1e2d421a36999d292042a5539971070d54aa6c63ylavicRule Arg 1974 only - Jan 23 0:00 1:00 S

fa7ed98b9dc94c5845cf845aea0a44ecacd290c9humbedoohRule Arg 1974 only - May 1 0:00 0 -

fa7ed98b9dc94c5845cf845aea0a44ecacd290c9humbedoohRule Arg 1988 only - Dec 1 0:00 1:00 S

fa7ed98b9dc94c5845cf845aea0a44ecacd290c9humbedooh#

0b67eb8568cd58bb77082703951679b42cf098actrawick# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):

0b67eb8568cd58bb77082703951679b42cf098actrawick# These corrections were contributed by InterSoft Argentina S.A.,

0b67eb8568cd58bb77082703951679b42cf098actrawick# obtaining the data from the:

0b67eb8568cd58bb77082703951679b42cf098actrawick# Talleres de Hidrografia Naval Argentina

5ef3c61605a3a021ff71f488983cb0065f8e1a79covener# (Argentine Naval Hydrography Institute)

fb1985a97912b25ec6564c73e610a31e5fc6e25fcovener#

09c87c777bed1655621bb20e1c46cb6b1a63279dcovener# Shanks stops after 1992-03-01; go with Otero.

6502b7b32f980cc2093bb3ebce37e5e4dc68fba4ylavicRule Arg 1989 1993 - Mar Sun>=1 0:00 0 -

6502b7b32f980cc2093bb3ebce37e5e4dc68fba4ylavicRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S

3060ce7f798fbda7999cd4ddf89b525d2b294185covener#

c1a63b8fad09c419c1a64f75993feb8a343a6801ylavic# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):

c1a63b8fad09c419c1a64f75993feb8a343a6801ylavic# From this moment on, the law that mandated the daylight saving

c1a63b8fad09c419c1a64f75993feb8a343a6801ylavic# time corrections was derogated and no more modifications

e6b4bd1113567627ab6bb6c6a7105e1e01a7d889jailletc# to the time zones (for daylight saving) are now made.

e6b4bd1113567627ab6bb6c6a7105e1e01a7d889jailletc#

e466c40e1801982602ee0200c9e8b61cc148742djailletc# From Rives McDow (2000-01-10):

e466c40e1801982602ee0200c9e8b61cc148742djailletc# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,

457468b82e59d01eba00dd9d0817309c8f5e414ejim# which did not result in the switch of a time zone, as they stayed 9 hours

457468b82e59d01eba00dd9d0817309c8f5e414ejim# from the International Date Line.

457468b82e59d01eba00dd9d0817309c8f5e414ejimRule Arg 1999 only - Oct Sun>=1 0:00 1:00 S

04983e3bd1754764eec7d6bb772fe3b0bf391771jortonRule Arg 2000 only - Mar Sun>=1 0:00 0 -

04983e3bd1754764eec7d6bb772fe3b0bf391771jorton#

15890c9306ba98f6fc243e15a3c4778ddc7d773erpluem# From Peter Gradelski via Steffen Thorsen (2000-03-01):

15660979a30d251681463de2e0584853890082accovener# We just checked with our Sao Paulo office and they say the government of

15660979a30d251681463de2e0584853890082accovener# Argentina decided not to become one of the countries that go on or off DST.

49dacedb6c387b786b7911082ff35121a45f414bcovener# So Buenos Aires should be -3 hours from GMT at all times.

49dacedb6c387b786b7911082ff35121a45f414bcovener#

cfd9415521847b2f9394fad04fb701cfb955f503rjung# From Fabian L. Arce Jofre <farcejofre@bigfoot.com> (2000-04-04):

cfd9415521847b2f9394fad04fb701cfb955f503rjung# The law that claimed DST for Argentina was derogated by President Fernando

cfd9415521847b2f9394fad04fb701cfb955f503rjung# de la Rua on March 2, 2000, because it would make people spend more energy

28c31fb73c1264bd1d0ff932573677030b024c7dwrowe# in the winter time, rather than less. The change took effect on March 3.

28c31fb73c1264bd1d0ff932573677030b024c7dwrowe#

28c31fb73c1264bd1d0ff932573677030b024c7dwrowe# From Mariano Absatz (2001-06-06):

28c31fb73c1264bd1d0ff932573677030b024c7dwrowe# one of the major newspapers here in Argentina said that the 1999

28c31fb73c1264bd1d0ff932573677030b024c7dwrowe# Timezone Law (which never was effectively applied) will (would?) be

8491e0600f69b0405e156ea8a419653c065c645bcovener# in effect.... The article is at

63b9f1f5880391261705f696d7d65507bbe9ace3covener# http://ar.clarin.com/diario/2001-06-06/e-01701.htm

63b9f1f5880391261705f696d7d65507bbe9ace3covener# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted

63b9f1f5880391261705f696d7d65507bbe9ace3covener# 1999-09-17, and published 1999-09-21. The official publication is at:

49dacedb6c387b786b7911082ff35121a45f414bcovener# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF

49dacedb6c387b786b7911082ff35121a45f414bcovener# Regretfully, you have to subscribe (and pay) for the on-line version....

49dacedb6c387b786b7911082ff35121a45f414bcovener#

49dacedb6c387b786b7911082ff35121a45f414bcovener# (2001-06-12):

3c990331fc6702119e4f5b8ba9eae3021aea5265jim# the timezone for Argentina will not change next Sunday.

3c990331fc6702119e4f5b8ba9eae3021aea5265jim# Apparently it will do so on Sunday 24th....

3c990331fc6702119e4f5b8ba9eae3021aea5265jim# http://ar.clarin.com/diario/2001-06-12/s-03501.htm

3c990331fc6702119e4f5b8ba9eae3021aea5265jim#

fc42512879dd0504532f52fe5d0d0383dda96a1eniq# (2001-06-25):

fc42512879dd0504532f52fe5d0d0383dda96a1eniq# Last Friday (yes, the last working day before the date of the change), the

fc42512879dd0504532f52fe5d0d0383dda96a1eniq# Senate annulled the 1999 law that introduced the changes later postponed.

0451df5dc50fa5d8b3e07d92ee6a92e36a1181a5niq# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm

0451df5dc50fa5d8b3e07d92ee6a92e36a1181a5niq# It remains the vote of the Deputies..., but it will be the same....

0451df5dc50fa5d8b3e07d92ee6a92e36a1181a5niq# This kind of things had always been done this way in Argentina.

da0442c0440caef34706e2c2f3af05cb65921cc0jailletc# We are still -03:00 all year round in all of the country.

983528026996668ea295be95aedb9c7a346af470ylavic#

da0442c0440caef34706e2c2f3af05cb65921cc0jailletc# From Mariano Absatz (2004-05-21):

da0442c0440caef34706e2c2f3af05cb65921cc0jailletc# Today it was officially published that the Province of Mendoza is changing

06b8f183140c8e02e0974e938a05078b511d1603covener# its timezone this winter... starting tomorrow night....

06b8f183140c8e02e0974e938a05078b511d1603covener# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf

06b8f183140c8e02e0974e938a05078b511d1603covener# From Paul Eggert (2004-05-24):

15890c9306ba98f6fc243e15a3c4778ddc7d773erpluem# It's Law No. 7,210. This change is due to a public power emergency, so for

259878293a997ff49f5ddfc53d3739cbdc25444ecovener# now we'll assume it's for this year only.

259878293a997ff49f5ddfc53d3739cbdc25444ecovener#

259878293a997ff49f5ddfc53d3739cbdc25444ecovener# From Paul Eggert (2002-01-22):

259878293a997ff49f5ddfc53d3739cbdc25444ecovener# <a href="http://www.spicasc.net/horvera.html">

15890c9306ba98f6fc243e15a3c4778ddc7d773erpluem# Hora de verano para la Republica Argentina (2000-10-01)

b54b024c06a19926832d77d40ba35ad8c41e4d3dminfrin# </a> says that standard time in Argentina from 1894-10-31

b54b024c06a19926832d77d40ba35ad8c41e4d3dminfrin# to 1920-05-01 was -4:16:48.25. Go with this more-precise value

b54b024c06a19926832d77d40ba35ad8c41e4d3dminfrin# over Shanks.

65967d05f839dbf27cf91d91fa79585eeae19660minfrin#

65967d05f839dbf27cf91d91fa79585eeae19660minfrin# From Mariano Absatz (2004-06-05):

65967d05f839dbf27cf91d91fa79585eeae19660minfrin# These media articles from a major newspaper mostly cover the current state:

65967d05f839dbf27cf91d91fa79585eeae19660minfrin# http://www.lanacion.com.ar/04/05/27/de_604825.asp

8152945ae46857b170cb227e79bb799f4fc7710dminfrin# http://www.lanacion.com.ar/04/05/28/de_605203.asp

8152945ae46857b170cb227e79bb799f4fc7710dminfrin#

8152945ae46857b170cb227e79bb799f4fc7710dminfrin# The following eight (8) provinces pulled clocks back to UTC-04:00 at

8152945ae46857b170cb227e79bb799f4fc7710dminfrin# midnight Monday May 31st. (that is, the night between 05/31 and 06/01).

75f5c2db254c0167a0e396254460de09b775d203trawick# Apparently, all nine provinces would go back to UTC-03:00 at the same

75f5c2db254c0167a0e396254460de09b775d203trawick# time in October 17th.

75f5c2db254c0167a0e396254460de09b775d203trawick#

4f0358189bfa57b8e75bd6b94db264302a8f336amrumph# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz,

4f0358189bfa57b8e75bd6b94db264302a8f336amrumph# Tierra del Fuego, Tucuman.

4f0358189bfa57b8e75bd6b94db264302a8f336amrumph#

5716f9c6daa92dde5f2f9d11ed63f7c9549c223atrawick# From Mariano Absatz (2004-06-14):

5716f9c6daa92dde5f2f9d11ed63f7c9549c223atrawick# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00

5716f9c6daa92dde5f2f9d11ed63f7c9549c223atrawick# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's

5716f9c6daa92dde5f2f9d11ed63f7c9549c223atrawick# annoyance with the change is much higher than the power savings obtained....

54d750a84a175d8e338880514d440773eb986b50covener#

54d750a84a175d8e338880514d440773eb986b50covener# From Gwillim Law (2004-06-14):

54d750a84a175d8e338880514d440773eb986b50covener# http://www.lanacion.com.ar/04/06/10/de_609078.asp ...

54d750a84a175d8e338880514d440773eb986b50covener# "The time change in Tierra del Fuego was a conflicted decision from

54d750a84a175d8e338880514d440773eb986b50covener# the start. The government had decreed that the measure would take

54d750a84a175d8e338880514d440773eb986b50covener# effect on June 1, but a normative error forced the new time to begin

54d750a84a175d8e338880514d440773eb986b50covener# three days earlier, from a Saturday to a Sunday....

54d750a84a175d8e338880514d440773eb986b50covener# Our understanding was that the change was originally scheduled to take place

7a3aa12f0eda24793ee26d6a179bd53132e9dae8covener# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other

54d750a84a175d8e338880514d440773eb986b50covener# provinces). Sunday was May 30, only two days earlier. So the article

54d750a84a175d8e338880514d440773eb986b50covener# contains a contradiction. I would give more credence to the Saturday/Sunday

83b50288fa7d306324bba68832011ea08f5c7832covener# date than the "three days earlier" phrase, and conclude that Tierra del

4e30ef014533a7e93c92d88306291f5e49c9692ftrawick# Fuego set its clocks back at 2004-05-30 00:00.

83b50288fa7d306324bba68832011ea08f5c7832covener#

5f066f496cd9f20a2a701255bc67d44e7cb46daetrawick# From Steffen Thorsen (2004-10-05):

5f066f496cd9f20a2a701255bc67d44e7cb46daetrawick# The previous law 7210 which changed the province of Mendoza's time zone

5f066f496cd9f20a2a701255bc67d44e7cb46daetrawick# back in May have been modified slightly in a new law 7277, which set the

2e15620d724fb8e3a5be183b917359a2fd6e9468covener# new end date to 2004-09-26 (original date was 2004-10-17).

2e15620d724fb8e3a5be183b917359a2fd6e9468covener# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf

2e15620d724fb8e3a5be183b917359a2fd6e9468covener#

2e15620d724fb8e3a5be183b917359a2fd6e9468covener# From Mariano Absatz (2004-10-05):

1b988c41ee505962781d110a3e4c2c90f1ea0aa4covener# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between

1b988c41ee505962781d110a3e4c2c90f1ea0aa4covener# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00

1b988c41ee505962781d110a3e4c2c90f1ea0aa4covener# at midnight between Saturday, July 24th and Sunday, July 25th....

1b988c41ee505962781d110a3e4c2c90f1ea0aa4covener# http://www.sanjuan.gov.ar/prensa/archivo/000329.html

b8efdc95bec9cf089aa1be0bfd07d46aa1137a7acovener# http://www.sanjuan.gov.ar/prensa/archivo/000426.html

b8efdc95bec9cf089aa1be0bfd07d46aa1137a7acovener# http://www.sanjuan.gov.ar/prensa/archivo/000441.html

b8efdc95bec9cf089aa1be0bfd07d46aa1137a7acovener

f06e7c4b1bce6b6491e5de0b7998d3f5696b293dchrisd# Unless otherwise specified, data are from Shanks through 1992, from

f06e7c4b1bce6b6491e5de0b7998d3f5696b293dchrisd# the IATA otherwise. As noted below, Shanks says that

f06e7c4b1bce6b6491e5de0b7998d3f5696b293dchrisd# America/Cordoba split into 6 subregions during 1991/1992, but we

179565be4043d7e5f9161aa75271fa0a001866d9covener# haven't verified this yet so for now we'll keep it a single region.

179565be4043d7e5f9161aa75271fa0a001866d9covener#

179565be4043d7e5f9161aa75271fa0a001866d9covener# Zone NAME GMTOFF RULES FORMAT [UNTIL]

111436a32ba1254291e4883292fb116d15fe8f64covener#

fce4949fb0b309a5744afcd503c6ed2d35621ee2covener# Buenos Aires (BA), Capital Federal (CF),

fce4949fb0b309a5744afcd503c6ed2d35621ee2covenerZone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31

fce4949fb0b309a5744afcd503c6ed2d35621ee2covener -4:16:48 - CMT 1920 May # Cordoba Mean Time

fce4949fb0b309a5744afcd503c6ed2d35621ee2covener -4:00 - ART 1930 Dec

7b7430e701e9a31ce809da7c220bb8dfcf68c86etrawick -4:00 Arg AR%sT 1969 Oct 5

7b7430e701e9a31ce809da7c220bb8dfcf68c86etrawick -3:00 Arg AR%sT 1999 Oct 3

7b7430e701e9a31ce809da7c220bb8dfcf68c86etrawick -4:00 Arg AR%sT 2000 Mar 3

ccc20788c1e5fc973f36df634399c89acb70deaejerenkrantz -3:00 - ART

ccc20788c1e5fc973f36df634399c89acb70deaejerenkrantz#

ccc20788c1e5fc973f36df634399c89acb70deaejerenkrantz# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),

273e512f20f262e5e2aa8e0e83371d1929fb76adjkaluza# Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB),

273e512f20f262e5e2aa8e0e83371d1929fb76adjkaluza# San Luis (SL), La Pampa (LP), Neuquen (NQ), Rio Negro (RN)

273e512f20f262e5e2aa8e0e83371d1929fb76adjkaluza#

efe780dcf13b2b95effabf897d694d8f23feac74trawick# Shanks also makes the following claims, which we haven't verified:

fe83f60b41477b14a37edcfcd1f7f5c5a1ebfe44minfrin# - Formosa switched to -3:00 on 1991-01-07.

fe83f60b41477b14a37edcfcd1f7f5c5a1ebfe44minfrin# - Misiones switched to -3:00 on 1990-12-29.

fe83f60b41477b14a37edcfcd1f7f5c5a1ebfe44minfrin# - Chaco switched to -3:00 on 1991-01-04.

993d1261a278d7322bccef219101220b7b4fb8c5jkaluza# - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15,

993d1261a278d7322bccef219101220b7b4fb8c5jkaluza# then to -4:00 on 1991-03-01, then to -3:00 on 1991-06-01.

993d1261a278d7322bccef219101220b7b4fb8c5jkaluza# - Santiago del Estero switched to -4:00 on 1991-04-01,

ba050a6f942b9fa0e81ed73437588005c569655ccovener# then to -3:00 on 1991-04-26.

ba050a6f942b9fa0e81ed73437588005c569655ccovener#

ba050a6f942b9fa0e81ed73437588005c569655ccovenerZone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31

ba050a6f942b9fa0e81ed73437588005c569655ccovener -4:16:48 - CMT 1920 May

135ddda3a989215d2bedbcf1529bfb269c3eda23niq -4:00 - ART 1930 Dec

135ddda3a989215d2bedbcf1529bfb269c3eda23niq -4:00 Arg AR%sT 1969 Oct 5

135ddda3a989215d2bedbcf1529bfb269c3eda23niq -3:00 Arg AR%sT 1991 Mar 3

001a44c352f89c9ec332ffd3e0a6927dcd19432chumbedooh -4:00 - WART 1991 Oct 20

001a44c352f89c9ec332ffd3e0a6927dcd19432chumbedooh -3:00 Arg AR%sT 1999 Oct 3

001a44c352f89c9ec332ffd3e0a6927dcd19432chumbedooh -4:00 Arg AR%sT 2000 Mar 3

efe780dcf13b2b95effabf897d694d8f23feac74trawick -3:00 - ART

793214f67dede32edfd9ee96c664ead04d175cbbjfclere#

cc5a4a08dc9783fcbc52ce86f11e01c281a43810minfrin# Tucuman (TM)

9b0076ddd1103e5fa9c1f9bafde4b06ce244fbaecovenerZone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31

9b0076ddd1103e5fa9c1f9bafde4b06ce244fbaecovener -4:16:48 - CMT 1920 May

9b0076ddd1103e5fa9c1f9bafde4b06ce244fbaecovener -4:00 - ART 1930 Dec

249d09d51808cb7981af99762c3b3736ca126cd5jkaluza -4:00 Arg AR%sT 1969 Oct 5

249d09d51808cb7981af99762c3b3736ca126cd5jkaluza -3:00 Arg AR%sT 1991 Mar 3

249d09d51808cb7981af99762c3b3736ca126cd5jkaluza -4:00 - WART 1991 Oct 20

249d09d51808cb7981af99762c3b3736ca126cd5jkaluza -3:00 Arg AR%sT 1999 Oct 3

56589be3d7a3e9343370df240010c6928cc78b39jkaluza -4:00 Arg AR%sT 2000 Mar 3

56589be3d7a3e9343370df240010c6928cc78b39jkaluza -3:00 - ART 2004 Jun 1

56589be3d7a3e9343370df240010c6928cc78b39jkaluza -4:00 - WART 2004 Jun 13

77ca16c5676da23155311e13cee61e7eaba9fa3ejailletc -3:00 - ART

77ca16c5676da23155311e13cee61e7eaba9fa3ejailletc#

77ca16c5676da23155311e13cee61e7eaba9fa3ejailletc# La Rioja (LR)

77ca16c5676da23155311e13cee61e7eaba9fa3ejailletcZone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31

f87299dab99bc04b51a6b8cad51b6795db862c0atrawick -4:16:48 - CMT 1920 May

f87299dab99bc04b51a6b8cad51b6795db862c0atrawick -4:00 - ART 1930 Dec

f87299dab99bc04b51a6b8cad51b6795db862c0atrawick -4:00 Arg AR%sT 1969 Oct 5

4d12805e6c18253040223ea637acd6b3b3c18f60jorton -3:00 Arg AR%sT 1991 Mar 1

4d12805e6c18253040223ea637acd6b3b3c18f60jorton -4:00 - WART 1991 May 7

4d12805e6c18253040223ea637acd6b3b3c18f60jorton -3:00 Arg AR%sT 1999 Oct 3

85eacfc96a04547ef25aabbc06440039715084c2jorton -4:00 Arg AR%sT 2000 Mar 3

85eacfc96a04547ef25aabbc06440039715084c2jorton -3:00 - ART 2004 Jun 1

e5d909f2b06bd880fb3675cd49363df981caa631trawick -4:00 - WART 2004 Jun 20

a4df2cd1e1391575a327c2a90ba4315f805a0a78covener -3:00 - ART

a4df2cd1e1391575a327c2a90ba4315f805a0a78covener#

a4df2cd1e1391575a327c2a90ba4315f805a0a78covener# San Juan (SJ)

cb666b29f81df1d11d65002250153353568021fccovenerZone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31

cb666b29f81df1d11d65002250153353568021fccovener -4:16:48 - CMT 1920 May

cb666b29f81df1d11d65002250153353568021fccovener -4:00 - ART 1930 Dec

6a80c3c6f4b8ea7ba5e89402b8b779b09ce020e0covener -4:00 Arg AR%sT 1969 Oct 5

1c2cab00d988fc48cbe59032cf76cc0bab20d6f7covener -3:00 Arg AR%sT 1991 Mar 1

6a80c3c6f4b8ea7ba5e89402b8b779b09ce020e0covener -4:00 - WART 1991 May 7

75a230a728338d84dcfe81edd375352f34de22d0covener -3:00 Arg AR%sT 1999 Oct 3

75a230a728338d84dcfe81edd375352f34de22d0covener -4:00 Arg AR%sT 2000 Mar 3

75a230a728338d84dcfe81edd375352f34de22d0covener -3:00 - ART 2004 May 31

1f50dc34ae069adeed20b2986e5ffdefa5c410e0covener -4:00 - WART 2004 Jul 25

1f50dc34ae069adeed20b2986e5ffdefa5c410e0covener -3:00 - ART

1f50dc34ae069adeed20b2986e5ffdefa5c410e0covener#

63a5ea80bddcc84a462e40f402b4f330e0e05411covener# Jujuy (JY)

63a5ea80bddcc84a462e40f402b4f330e0e05411covenerZone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31

63a5ea80bddcc84a462e40f402b4f330e0e05411covener -4:16:48 - CMT 1920 May

63a5ea80bddcc84a462e40f402b4f330e0e05411covener -4:00 - ART 1930 Dec

65a4e663b82f8bce28ac22ab2edfd7502de36998sf -4:00 Arg AR%sT 1969 Oct 5

65a4e663b82f8bce28ac22ab2edfd7502de36998sf -3:00 Arg AR%sT 1990 Mar 4

65a4e663b82f8bce28ac22ab2edfd7502de36998sf -4:00 - WART 1990 Oct 28

65a4e663b82f8bce28ac22ab2edfd7502de36998sf -4:00 1:00 WARST 1991 Mar 17

c7de1955eb0eaeabf7042902476397692672d549sf -4:00 - WART 1991 Oct 6

74e7f6c55fd67b10cb400b3f6d1dc718a303d944minfrin -3:00 1:00 ARST 1992

74e7f6c55fd67b10cb400b3f6d1dc718a303d944minfrin -3:00 Arg AR%sT 1999 Oct 3

74e7f6c55fd67b10cb400b3f6d1dc718a303d944minfrin -4:00 Arg AR%sT 2000 Mar 3

74e7f6c55fd67b10cb400b3f6d1dc718a303d944minfrin -3:00 - ART

a511a29faf2ff7ead3b67680154a624effb31aafminfrin#

a511a29faf2ff7ead3b67680154a624effb31aafminfrin# Catamarca (CT)

a511a29faf2ff7ead3b67680154a624effb31aafminfrinZone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31

a511a29faf2ff7ead3b67680154a624effb31aafminfrin -4:16:48 - CMT 1920 May

a511a29faf2ff7ead3b67680154a624effb31aafminfrin -4:00 - ART 1930 Dec

63921358ef93fcb41bc71d9894221ba3d7fbb87bminfrin -4:00 Arg AR%sT 1969 Oct 5

63921358ef93fcb41bc71d9894221ba3d7fbb87bminfrin -3:00 Arg AR%sT 1991 Mar 3

63921358ef93fcb41bc71d9894221ba3d7fbb87bminfrin -4:00 - WART 1991 Oct 20

deec48c67d4786bc77112ffbf3a4e70b931097edminfrin -3:00 Arg AR%sT 1999 Oct 3

6d601599d3d65df0410eae6e573e75b2dbfb1fb4minfrin -4:00 Arg AR%sT 2000 Mar 3

6d601599d3d65df0410eae6e573e75b2dbfb1fb4minfrin -3:00 - ART 2004 Jun 1

6d601599d3d65df0410eae6e573e75b2dbfb1fb4minfrin -4:00 - WART 2004 Jun 20

6d601599d3d65df0410eae6e573e75b2dbfb1fb4minfrin -3:00 - ART

684e0cfc200f66287a93bbd1708d1dd8a92a7eefcovener#

684e0cfc200f66287a93bbd1708d1dd8a92a7eefcovener# Mendoza (MZ)

5c43d2fb853f84497b5ece2d414ef9484aa87e5fsfZone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31

05a5a9c3e16f21566e1b61f4bd68025ce1b741ccjoes -4:16:48 - CMT 1920 May

05a5a9c3e16f21566e1b61f4bd68025ce1b741ccjoes -4:00 - ART 1930 Dec

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -4:00 Arg AR%sT 1969 Oct 5

26c5829347f6a355c00f1ba0301d575056b69536niq -3:00 Arg AR%sT 1990 Mar 4

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -4:00 - WART 1990 Oct 15

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -4:00 1:00 WARST 1991 Mar 1

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -4:00 - WART 1991 Oct 15

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -4:00 1:00 WARST 1992 Mar 1

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -4:00 - WART 1992 Oct 18

ef82e8fa164e0a1f8b813f7deb6b7ead96018c94niq -3:00 Arg AR%sT 1999 Oct 3

413ee814748f37be168ff12407fa6dba0ceeabe6trawick -4:00 Arg AR%sT 2000 Mar 3

c12917da693bae4028a1d5a5e8224bceed8c739dsf -3:00 - ART 2004 May 23

c12917da693bae4028a1d5a5e8224bceed8c739dsf -4:00 - WART 2004 Sep 26

eafcc0ebf263d0ba69855b6e10958c4c1a2361bdsf -3:00 - ART

eafcc0ebf263d0ba69855b6e10958c4c1a2361bdsf#

eafcc0ebf263d0ba69855b6e10958c4c1a2361bdsf# Chubut (CH)

eafcc0ebf263d0ba69855b6e10958c4c1a2361bdsf# The name "Comodoro Rivadavia" exceeds the 14-byte POSIX limit.

eafcc0ebf263d0ba69855b6e10958c4c1a2361bdsfZone America/Argentina/ComodRivadavia -4:30:00 - LMT 1894 Oct 31

d7ffd2da16d58b1a0de212e4d56f7aebb72bef26sf -4:16:48 - CMT 1920 May

d7ffd2da16d58b1a0de212e4d56f7aebb72bef26sf -4:00 - ART 1930 Dec

d7ffd2da16d58b1a0de212e4d56f7aebb72bef26sf -4:00 Arg AR%sT 1969 Oct 5

4576c1a9ef54cd1e5555ee07d016a7f559f80338sf -3:00 Arg AR%sT 1991 Mar 3

4576c1a9ef54cd1e5555ee07d016a7f559f80338sf -4:00 - WART 1991 Oct 20

4576c1a9ef54cd1e5555ee07d016a7f559f80338sf -3:00 Arg AR%sT 1999 Oct 3

9811aed12bbc71783d2e544ccb5fecd193843eadsf -4:00 Arg AR%sT 2000 Mar 3

9811aed12bbc71783d2e544ccb5fecd193843eadsf -3:00 - ART 2004 Jun 1

9811aed12bbc71783d2e544ccb5fecd193843eadsf -4:00 - WART 2004 Jun 20

88fac54d9d64f85bbdab5d7010816f4377f95bd7rjung -3:00 - ART

88fac54d9d64f85bbdab5d7010816f4377f95bd7rjung#

bd3f5647b96d378d9c75c954e3f13582af32c643sf# Santa Cruz (SC)

bd3f5647b96d378d9c75c954e3f13582af32c643sfZone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31

bd3f5647b96d378d9c75c954e3f13582af32c643sf -4:16:48 - CMT 1920 May # Cordoba Mean Time

bd3f5647b96d378d9c75c954e3f13582af32c643sf -4:00 - ART 1930 Dec

bd3f5647b96d378d9c75c954e3f13582af32c643sf -4:00 Arg AR%sT 1969 Oct 5

2a7beea91d46beb41f043a84eaad060047ee04aafabien -3:00 Arg AR%sT 1999 Oct 3

2a7beea91d46beb41f043a84eaad060047ee04aafabien -4:00 Arg AR%sT 2000 Mar 3

2a7beea91d46beb41f043a84eaad060047ee04aafabien -3:00 - ART 2004 Jun 1

2a7beea91d46beb41f043a84eaad060047ee04aafabien -4:00 - WART 2004 Jun 20

584a85dd4047e38d3ed3a29b6662fcc9d100ae4csf -3:00 - ART

584a85dd4047e38d3ed3a29b6662fcc9d100ae4csf#

584a85dd4047e38d3ed3a29b6662fcc9d100ae4csf# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF)

f21e9e3d0bfb7a507ecc5bc963f2159d693503d1sfZone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31

f21e9e3d0bfb7a507ecc5bc963f2159d693503d1sf -4:16:48 - CMT 1920 May # Cordoba Mean Time

f21e9e3d0bfb7a507ecc5bc963f2159d693503d1sf -4:00 - ART 1930 Dec

f6b9c755a0b793e8a3a3aebd327ca20a86478117sf -4:00 Arg AR%sT 1969 Oct 5

f6b9c755a0b793e8a3a3aebd327ca20a86478117sf -3:00 Arg AR%sT 1999 Oct 3

f6b9c755a0b793e8a3a3aebd327ca20a86478117sf -4:00 Arg AR%sT 2000 Mar 3

132ee6ac1c26d6e8953836316ba50734eefab47bsf -3:00 - ART 2004 May 30

132ee6ac1c26d6e8953836316ba50734eefab47bsf -4:00 - WART 2004 Jun 20

132ee6ac1c26d6e8953836316ba50734eefab47bsf -3:00 - ART

85eacfc96a04547ef25aabbc06440039715084c2jorton

85eacfc96a04547ef25aabbc06440039715084c2jorton# Aruba

85eacfc96a04547ef25aabbc06440039715084c2jorton# Zone NAME GMTOFF RULES FORMAT [UNTIL]

536d2e7cd1fdec1255b8c3bdf41fdc714c506a54trawickZone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad

536d2e7cd1fdec1255b8c3bdf41fdc714c506a54trawick -4:30 - ANT 1965 # Netherlands Antilles Time

536d2e7cd1fdec1255b8c3bdf41fdc714c506a54trawick -4:00 - AST

536d2e7cd1fdec1255b8c3bdf41fdc714c506a54trawick

79c5787b92ac5f0e1cc82393816c77a006399316trawick# Bolivia

79c5787b92ac5f0e1cc82393816c77a006399316trawick# Zone NAME GMTOFF RULES FORMAT [UNTIL]

79c5787b92ac5f0e1cc82393816c77a006399316trawickZone America/La_Paz -4:32:36 - LMT 1890

79c5787b92ac5f0e1cc82393816c77a006399316trawick -4:32:36 - CMT 1931 Oct 15 # Calamarca MT

c967bf3bc89e8aa60dbd30d9da388e448ddc1cc4trawick -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST

79c5787b92ac5f0e1cc82393816c77a006399316trawick -4:00 - BOT # Bolivia Time

79c5787b92ac5f0e1cc82393816c77a006399316trawick

79c5787b92ac5f0e1cc82393816c77a006399316trawick# Brazil

79c5787b92ac5f0e1cc82393816c77a006399316trawick

79c5787b92ac5f0e1cc82393816c77a006399316trawick# From Paul Eggert <eggert@twinsun.com> (1993-11-18):

7b395e4e878c28a4784919cfd2e704ddd14a3390jorton# The mayor of Rio recently attempted to change the time zone rules

7b395e4e878c28a4784919cfd2e704ddd14a3390jorton# just in his city, in order to leave more summer time for the tourist trade.

7b395e4e878c28a4784919cfd2e704ddd14a3390jorton# The rule change lasted only part of the day;

7b395e4e878c28a4784919cfd2e704ddd14a3390jorton# the federal government refused to follow the city's rules, and business

536e48c08d674acac5d44929318f2ad928edc361jorton# was in a chaos, so the mayor backed down that afternoon.

536e48c08d674acac5d44929318f2ad928edc361jorton

e81785da447b469da66f218b3f0244aab507958djorton# From IATA SSIM (1996-02):

e81785da447b469da66f218b3f0244aab507958djorton# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),

3e4e54d4e3fc0123c63d57aa84ac7ad7a8c73ff8jorton# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),

3e4e54d4e3fc0123c63d57aa84ac7ad7a8c73ff8jorton# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO),

3e4e54d4e3fc0123c63d57aa84ac7ad7a8c73ff8jorton# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].

53e9b27aba029b18be814df40bcf6f0428771d1efuankg# [The last three states are new to this issue of the IATA SSIM.]

53e9b27aba029b18be814df40bcf6f0428771d1efuankg

53e9b27aba029b18be814df40bcf6f0428771d1efuankg# From Gwillim Law (1996-10-07):

53e9b27aba029b18be814df40bcf6f0428771d1efuankg# Geography, history (Tocantins was part of Goias until 1989), and other

53e9b27aba029b18be814df40bcf6f0428771d1efuankg# sources of time zone information lead me to believe that AL, SE, and TO were

6bb524f1895f30265a1431afc460977d391cb36bsf# always in BR1, and so the only change was whether or not they observed DST....

6bb524f1895f30265a1431afc460977d391cb36bsf# The earliest issue of the SSIM I have is 2/91. Each issue from then until

ca61ccd0c306c2c72df153688ba1b49f3eceed80sf# 9/95 says that DST is observed only in the ten states I quoted from 9/95,

6bb524f1895f30265a1431afc460977d391cb36bsf# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2

e6dd71992459d05a676b98b7963423dc5dc1e24aminfrin# (UTC-4).... The other two time zones given for Brazil are BR3, which is

e6dd71992459d05a676b98b7963423dc5dc1e24aminfrin# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is

e6dd71992459d05a676b98b7963423dc5dc1e24aminfrin# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's

e6dd71992459d05a676b98b7963423dc5dc1e24aminfrin# become part of the state of Pernambuco). The boundary between BR1 and BR2

23f1535d6a60817d2846bac0aea230ea475d7dccminfrin# has never been clearly stated. They've simply been called East and West.

23f1535d6a60817d2846bac0aea230ea475d7dccminfrin# However, some conclusions can be drawn from another IATA manual: the Airline

23f1535d6a60817d2846bac0aea230ea475d7dccminfrin# Coding Directory, which lists close to 400 airports in Brazil. For each

23f1535d6a60817d2846bac0aea230ea475d7dccminfrin# airport it gives a time zone which is coded to the SSIM. From that

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE),

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# From Marcos Tadeu (1998-09-27):

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# <a href="http://pcdsh01.on.br/verao1.html">

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# Brazilian official page

ec7520b24cd80d34d82bbcaca153cbb23cc04bc0rjung# </a>

6249dfa569d3b4f1f539665b979a80c6e335d93etrawick

6249dfa569d3b4f1f539665b979a80c6e335d93etrawick# From Jesper Norgaard (2000-11-03):

0827cb14e550f6f65018431c22c2c913631c8f25kbrand# [For an official list of which regions in Brazil use which time zones, see:]

6249dfa569d3b4f1f539665b979a80c6e335d93etrawick# http://pcdsh01.on.br/Fusbr.htm

ae600ca541efc686b34f8b1f21bd3d0741d37674covener# http://pcdsh01.on.br/Fusbrhv.htm

6249dfa569d3b4f1f539665b979a80c6e335d93etrawick

cfa64348224b66dd1c9979b809406c4d15b1c137fielding# From Celso Doria via David Madeo (2002-10-09):

74499a117b3b2cd9666715a14f90c0e5d1a4ee8ajim# The reason for the delay this year has to do with elections in Brazil.

cfa64348224b66dd1c9979b809406c4d15b1c137fielding#

74499a117b3b2cd9666715a14f90c0e5d1a4ee8ajim# Unlike in the United States, elections in Brazil are 100% computerized and

cfa64348224b66dd1c9979b809406c4d15b1c137fielding# the results are known almost immediately. Yesterday, it was the first

74499a117b3b2cd9666715a14f90c0e5d1a4ee8ajim# round of the elections when 115 million Brazilians voted for President,

cfa64348224b66dd1c9979b809406c4d15b1c137fielding# Governor, Senators, Federal Deputies, and State Deputies. Nobody is

74499a117b3b2cd9666715a14f90c0e5d1a4ee8ajim# counting (or re-counting) votes anymore and we know there will be a second

cfa64348224b66dd1c9979b809406c4d15b1c137fielding# 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 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> (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

# </a> (in Portuguese).

# 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 <dcs@gns.com.br> (1998-02-12):

# In 1997, the DS began on October 6. The stated reason was that

# because international television networks ignored Brazil's policy on DS,

# 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.

#

# From Paul Eggert (1998-02-25):

# <a href="http://churchnet.ucsm.ac.uk/news/files2/news165.htm">

# Brazil Prepares for Papal Visit

# </a>,

# Church Net UK (1997-10-02).

#

# 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 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

# 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

# The latest ruleset listed above says that the following states observe DST:

# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.

#

Rule Brazil 2005 max - Oct Sun>=15 0:00 1:00 S

# For dates after mid-2005, 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 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 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

Rule Chile 2000 max - Mar Sun>=9 3:00u 0 -

# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14;

# (1996-09) says 1998-03-08. Ignore these.

# Zone NAME GMTOFF RULES FORMAT [UNTIL]

Zone America/Santiago -4:42:40 - LMT 1890

-4:42:40 - SMT 1910 # Santiago Mean Time

-5:00 Chile CL%sT 1932 Sep # Chile Time

-4:00 Chile CL%sT

Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri

-7:17:28 - MMT 1932 Sep # Mataveri Mean Time

-7:00 Chile EAS%sT 1982 Mar 14 # 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

# Shanks specifies 24:00 for 1992 transition times; go with IATA,

# as it seems implausible to change clocks at midnight New Year's Eve.

# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S

Rule CO 1992 only - May 2 0:00 1:00 S

Rule CO 1992 only - Dec 31 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

# Shanks says that Bottom and Oranjestad 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.

# This all predates our 1970 cutoff, though.

# 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

# 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 (2001-03-05):

# Between 1990 and 2000 inclusive, Shanks and the IATA agree except

# the IATA gives 1996-09-08. Go with Shanks.

# 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 (1999-10-29):

# Shanks (1999) says that spring transitions are from 01:00 -> 02:00,

# and autumn transitions are from 00:00 -> 23:00. Go with earlier

# 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.

#

# 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 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 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

-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 (2003-11-02):

# Shanks doesn'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.

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 <eggert@twinsun.com> (1993-11-18):

# Uruguay wins the prize for the strangest peacetime manipulation of the rules.

# From Shanks:

# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S

# Whitman gives 1923 Oct 1; go with Shanks.

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 gives 1935 Apr 1 0:00 and 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.

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.

Rule Uruguay 1941 only - Aug 1 0:00 0 -

Rule Uruguay 1942 only - Jan 1 0:00 0:30 HS

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 says 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 Sun>=15 0:00 1:00 S

Rule Uruguay 2005 only - Mar Sun>=8 0:00 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

# 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