13 # San Diego: ACS Publications, Inc. (2003).
14 # Unfortunately this book contains many errors and cites no sources.
15 #
16 # Gwillim Law writes that a good source
17 # for recent time zone data is the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990. Except where otherwise noted,
21 # IATA SSIM is the source for entries after 1990.
22 #
23 # For data circa 1899, a common source is:
24 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
25 # http://www.jstor.org/stable/1774359
26 #
27 # Earlier editions of these tables used the North American style (e.g. ARST and
28 # ARDT for Argentine Standard and Daylight Time), but the following quote
29 # suggests that it's better to use European style (e.g. ART and ARST).
30 # I suggest the use of _Summer time_ instead of the more cumbersome
31 # _daylight-saving time_. _Summer time_ seems to be in general use
32 # in Europe and South America.
33 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
34 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
35 #
36 # Earlier editions of these tables also used the North American style
37 # for time zones in Brazil, but this was incorrect, as Brazilians say
38 # "summer time". Reinaldo Goulart, a São Paulo businessman active in
39 # the railroad sector, writes (1999-07-06):
40 # The subject of time zones is currently a matter of discussion/debate in
41 # Brazil. Let's say that "the Brasília time" is considered the
42 # "official time" because Brasília is the capital city.
43 # The other three time zones are called "Brasília time "minus one" or
44 # "plus one" or "plus two". As far as I know there is no such
45 # name/designation as "Eastern Time" or "Central Time".
46 # So I invented the following (English-language) abbreviations for now.
47 # Corrections are welcome!
48 # std dst
49 # -2:00 FNT FNST Fernando de Noronha
50 # -3:00 BRT BRST Brasília
51 # -4:00 AMT AMST Amazon
52 # -5:00 ACT ACST Acre
53
114 # DST was set to expire on March 5, not March 3, but since it was converted
115 # to standard time on March 3 it's more convenient for us to pretend that
116 # it ended on March 3.
117 Rule Arg 2000 only - Mar 3 0:00 0 -
118 #
119 # From Peter Gradelski via Steffen Thorsen (2000-03-01):
120 # We just checked with our São Paulo office and they say the government of
121 # Argentina decided not to become one of the countries that go on or off DST.
122 # So Buenos Aires should be -3 hours from GMT at all times.
123 #
124 # From Fabián L. Arce Jofré (2000-04-04):
125 # The law that claimed DST for Argentina was derogated by President Fernando
126 # de la Rúa on March 2, 2000, because it would make people spend more energy
127 # in the winter time, rather than less. The change took effect on March 3.
128 #
129 # From Mariano Absatz (2001-06-06):
130 # one of the major newspapers here in Argentina said that the 1999
131 # Timezone Law (which never was effectively applied) will (would?) be
132 # in effect.... The article is at
133 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm
134 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted
135 # 1999-09-17, and published 1999-09-21. The official publication is at:
136 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
137 # Regretfully, you have to subscribe (and pay) for the on-line version....
138 #
139 # (2001-06-12):
140 # the timezone for Argentina will not change next Sunday.
141 # Apparently it will do so on Sunday 24th....
142 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm
143 #
144 # (2001-06-25):
145 # Last Friday (yes, the last working day before the date of the change), the
146 # Senate annulled the 1999 law that introduced the changes later postponed.
147 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
148 # It remains the vote of the Deputies..., but it will be the same....
149 # This kind of things had always been done this way in Argentina.
150 # We are still -03:00 all year round in all of the country.
151 #
152 # From Steffen Thorsen (2007-12-21):
153 # A user (Leonardo Chaim) reported that Argentina will adopt DST....
154 # all of the country (all Zone-entries) are affected. News reports like
158 #
159 # From Jesper Nørgaard Welen (2007-12-26)
160 # The last hurdle of Argentina DST is over, the proposal was approved in
161 # the lower chamber too (Diputados) with a vote 192 for and 2 against.
162 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
163 # the original scanned proposal, where the dates and the zero hours are
164 # clear and unambiguous...This is the article about final approval:
165 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
166 #
167 # From Paul Eggert (2007-12-22):
168 # For dates after mid-2008, the following rules are my guesses and
169 # are quite possibly wrong, but are more likely than no DST at all.
170
171 # From Alexander Krivenyshev (2008-09-05):
172 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua),
173 # Argentina will start DST on Sunday October 19, 2008.
174 #
175 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html
176 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
177
178 # From Rodrigo Severo (2008-10-06):
179 # Here is some info available at a Gentoo bug related to TZ on Argentina's DST:
180 # ...
181 # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 -------
182 # Hi, there is a problem with timezone-data-2008e and maybe with
183 # timezone-data-2008f
184 # Argentinian law [Number] 25.155 is no longer valid.
185 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm
186 # The new one is law [Number] 26.350
187 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm
188 # So there is no summer time in Argentina for now.
189
190 # From Mariano Absatz (2008-10-20):
191 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST
192 # in Argentina from 2008-10-19 until 2009-03-15.
193 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01
194 #
195
196 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer
197 # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La
198 # Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego
199 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01
200 #
201 # Press release 235 dated Saturday October 18th, from the Government of the
202 # Province of Jujuy saying it will not apply DST either (even when it was not
203 # included in Decree 1705/2008).
204 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc
205
206 # From fullinet (2009-10-18):
754 # State Bahia will return to Daylight savings time this year after 8 years off.
755 # The announcement was made by Governor Jaques Wagner in an interview to a
756 # television station in Salvador.
757
758 # In Portuguese:
759 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
760 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
761
762 # From Guilherme Bernardes Rodrigues (2011-10-07):
763 # There is news in the media, however there is still no decree about it.
764 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
765 # official agency about time in Brazil, and she confirmed that the old rule is
766 # still in force.
767
768 # From Guilherme Bernardes Rodrigues (2011-10-14)
769 # It's official, the President signed a decree that includes Bahia in summer
770 # time.
771 # [ and in a second message (same day): ]
772 # I found the decree.
773 #
774 # DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011
775 # Link :
776 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
777
778 # From Kelley Cook (2012-10-16):
779 # The governor of state of Bahia in Brazil announced on Thursday that
780 # due to public pressure, he is reversing the DST policy they implemented
781 # last year and will not be going to Summer Time on October 21st....
782 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
783
784 # From Rodrigo Severo (2012-10-16):
785 # Tocantins state will have DST.
786 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
787
788 # From Steffen Thorsen (2013-09-20):
789 # Tocantins in Brazil is very likely not to observe DST from October....
790 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
791 # We will keep this article updated when this is confirmed:
792 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
793
794 # From Steffen Thorsen (2013-10-17):
1081 #
1082 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1083 # Eirunepé, Envira, Ipixuna
1084 Zone America/Eirunepe -4:39:28 - LMT 1914
1085 -5:00 Brazil AC%sT 1988 Sep 12
1086 -5:00 - ACT 1993 Sep 28
1087 -5:00 Brazil AC%sT 1994 Sep 22
1088 -5:00 - ACT 2008 Jun 24 0:00
1089 -4:00 - AMT 2013 Nov 10
1090 -5:00 - ACT
1091 #
1092 # Acre (AC)
1093 Zone America/Rio_Branco -4:31:12 - LMT 1914
1094 -5:00 Brazil AC%sT 1988 Sep 12
1095 -5:00 - ACT 2008 Jun 24 0:00
1096 -4:00 - AMT 2013 Nov 10
1097 -5:00 - ACT
1098
1099 # Chile
1100
1101 # From Eduardo Krell (1995-10-19):
1102 # The law says to switch to DST at midnight [24:00] on the second SATURDAY
1103 # of October.... The law is the same for March and October.
1104 # (1998-09-29):
1105 # Because of the drought this year, the government decided to go into
1106 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1107 # (unless there's another dry season next year, I guess).
1108
1109 # From Julio I. Pacheco Troncoso (1999-03-18):
1110 # Because of the same drought, the government decided to end DST later,
1111 # on April 3, (one-time change).
1112
1113 # From Oscar van Vlijmen (2006-10-08):
1114 # http://www.horaoficial.cl/cambio.htm
1115
1116 # From Jesper Nørgaard Welen (2006-10-08):
1117 # I think that there are some obvious mistakes in the suggested link
1118 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4
1119 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15
1120 # (they should have been 1990-09-15 and 1990-09-16 respectively), but
1121 # anyhow it clears up some doubts too.
1122
1123 # From Paul Eggert (2014-08-12):
1124 # The following data entries for Chile and America/Santiago are from
1125 # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
1126 # Jesper Nørgaard Welen. The data entries for Pacific/Easter are from Shanks
1127 # & Pottenger, except with DST transitions after 1932 cloned from
1128 # America/Santiago. The pre-1980 Pacific/Easter data entries are dubious,
1129 # but we have no other source.
1130
1131 # From Germán Poo-Caamaño (2008-03-03):
1132 # Due to drought, Chile extends Daylight Time in three weeks. This
1133 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1134 # and Saturday 3/29 at 22:00 for Pacific/Easter)
1135 # The Supreme Decree is located at
1136 # http://www.shoa.cl/servicios/supremo316.pdf
1137 # and the instructions for 2008 are located in:
1138 # http://www.horaoficial.cl/cambio.htm
1139
1140 # From José Miguel Garrido (2008-03-05):
1141 # ...
1142 # You could see the announces of the change on
1143 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
1144
1145 # From Angel Chiang (2010-03-04):
1146 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1147 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1148 # (in Spanish, last paragraph).
1149 #
1150 # This is breaking news. There should be more information available later.
1151
1152 # From Arthur David Olson (2010-03-06):
1153 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1154
1155 # From Glenn Eychaner (2011-03-02):
1156 # It appears that the Chilean government has decided to postpone the
1157 # change from summer time to winter time again, by three weeks to April
1158 # 2nd:
1159 # http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651
1160 #
1161 # This is not yet reflected in the official "cambio de hora" site, but
1162 # probably will be soon:
1163 # http://www.horaoficial.cl/cambio.htm
1164
1165 # From Arthur David Olson (2011-03-02):
1166 # The emol.com article mentions a water shortage as the cause of the
1167 # postponement, which may mean that it's not a permanent change.
1168
1169 # From Glenn Eychaner (2011-03-28):
1170 # The article:
1171 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1172 #
1173 # In English:
1174 # Chile's clocks will go back an hour this year on the 7th of May instead
1175 # of this Saturday. They will go forward again the 3rd Saturday in
1176 # August, not in October as they have since 1968. This is a pilot plan
1177 # which will be reevaluated in 2012.
1178
1179 # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1180 # As stated in the website of the Chilean Energy Ministry
1181 # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1182 # The Chilean Government has decided to postpone the entrance into winter time
1183 # (to leave DST) from March 11 2012 to April 28th 2012. The decision has not
1184 # been yet formalized but it will within the next days.
1185 # Quote from the website communication:
1186 #
1187 # 6. For the year 2012, the dates of entry into winter time will be as follows:
1188 # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1189 # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1190 # of the same day.
1191 # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1192 # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
1193 # 01:00 on September 2.
1194
1195 # From Steffen Thorsen (2013-02-15):
1196 # According to several news sources, Chile has extended DST this year,
1197 # they will end DST later and start DST earlier than planned. They
1198 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1199 # start date is 2013-09-08 00:00....
1200 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1201
1202 # From José Miguel Garrido (2014-02-19):
1203 # Today appeared in the Diario Oficial a decree amending the time change
1204 # dates to 2014.
1205 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1206 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1207 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1208
1209 # From Juan Correa (2015-01-28):
1210 # ... today the Ministry of Energy announced that Chile will drop DST, will keep
1211 # "summer time" (UTC -3 / UTC -5) all year round....
1212 # http://www.minenergia.cl/ministerio/noticias/generales/ministerio-de-energia-anuncia.html
1213
1214 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the
1215 # 'antarctica' file.
1216
1217 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1218 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
1219 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1220 Rule Chile 1942 only - Jun 1 4:00u 0 -
1221 Rule Chile 1942 only - Aug 1 5:00u 1:00 S
1222 Rule Chile 1946 only - Jul 15 4:00u 1:00 S
1223 Rule Chile 1946 only - Sep 1 3:00u 0:00 -
1224 Rule Chile 1947 only - Apr 1 4:00u 0 -
1225 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1226 Rule Chile 1969 only - Mar 30 3:00u 0 -
1227 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1228 Rule Chile 1970 only - Mar 29 3:00u 0 -
1229 Rule Chile 1971 only - Mar 14 3:00u 0 -
1230 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1231 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1232 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1233 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1234 Rule Chile 1987 only - Apr 12 3:00u 0 -
1235 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 -
1236 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S
1237 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S
1238 Rule Chile 1990 only - Mar 18 3:00u 0 -
1239 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1240 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1241 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1242 Rule Chile 1997 only - Mar 30 3:00u 0 -
1243 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1244 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1245 Rule Chile 1999 only - Apr 4 3:00u 0 -
1246 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1247 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1248 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1249 # which is used below in specifying the transition.
1250 Rule Chile 2008 only - Mar 30 3:00u 0 -
1251 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1252 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1253 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1254 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1255 Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 -
1256 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1257 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1258 # (1996-09) says 1998-03-08. Ignore these.
1259 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1260 Zone America/Santiago -4:42:46 - LMT 1890
1261 -4:42:46 - SMT 1910 # Santiago Mean Time
1262 -5:00 - CLT 1916 Jul 1 # Chile Time
1263 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
1264 -4:00 - CLT 1919 Jul 1 # Chile Time
1265 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
1266 -5:00 Chile CL%sT 1947 May 22 # Chile Time
1267 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1268 -3:00 - CLT
1269 Zone Pacific/Easter -7:17:44 - LMT 1890
1270 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1271 -7:00 Chile EAS%sT 1982 Mar 13 3:00u # Easter Time
1272 -6:00 Chile EAS%sT 2015 Apr 26 3:00u
1273 -5:00 - EAST
1274 #
1275 # Salas y Gómez Island is uninhabited.
1276 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1277 # and Antarctic bases, are like America/Santiago.
1278
1279 # Colombia
1280
1281 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1282 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1283
1284 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1285 Rule CO 1992 only - May 3 0:00 1:00 S
1286 Rule CO 1993 only - Apr 4 0:00 0 -
1287 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1288 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1289 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1290 -5:00 CO CO%sT # Colombia Time
1291 # Malpelo, Providencia, San Andres
1292 # no information; probably like America/Bogota
1293
1294 # Curaçao
1295
1296 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1297 #
1298 # From Paul Eggert (2006-03-22):
1487 # I have three independent reports that Paraguay changed to DST this Sunday
1488 # (10-01).
1489 #
1490 # Translated by Gwillim Law (2001-02-27) from
1491 # Noticias, a daily paper in Asunción, Paraguay (2000-10-01):
1492 # http://www.diarionoticias.com.py/011000/nacional/naciona1.htm
1493 # Starting at 0:00 today, the clock will be set forward 60 minutes, in
1494 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change
1495 # system has been operating for several years. Formerly there was a separate
1496 # decree each year; the new law has the same effect, but permanently. Every
1497 # year, the time will change on the first Sunday of October; likewise, the
1498 # clock will be set back on the first Sunday of March.
1499 #
1500 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
1501 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
1502 Rule Para 1997 only - Feb lastSun 0:00 0 -
1503 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
1504 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
1505 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -
1506 # From Rives McDow (2002-02-28):
1507 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the
1508 # dst method to be from the first Sunday in September to the first Sunday in
1509 # April.
1510 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 -
1511 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S
1512 #
1513 # From Jesper Nørgaard Welen (2005-01-02):
1514 # There are several sources that claim that Paraguay made
1515 # a timezone rule change in autumn 2004.
1516 # From Steffen Thorsen (2005-01-05):
1517 # Decree 1,867 (2004-03-05)
1518 # From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)
1519 # http://www.presidencia.gov.py/decretos/D1867.pdf
1520 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S
1521 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 -
1522 # From Carlos Raúl Perasso (2010-02-18):
1523 # By decree number 3958 issued yesterday
1524 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf
1525 # Paraguay changes its DST schedule, postponing the March rule to April and
1526 # modifying the October date. The decree reads:
1527 # ...
1586
1587 # South Sandwich Is
1588 # uninhabited; scientific personnel have wintered
1589
1590 # Suriname
1591 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1592 Zone America/Paramaribo -3:40:40 - LMT 1911
1593 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1594 -3:40:36 - PMT 1945 Oct # The capital moved?
1595 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
1596 -3:30 - SRT 1984 Oct # Suriname Time
1597 -3:00 - SRT
1598
1599 # Trinidad and Tobago
1600 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1601 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1602 -4:00 - AST
1603
1604 # These all agree with Trinidad and Tobago since 1970.
1605 Link America/Port_of_Spain America/Anguilla
1606 Link America/Port_of_Spain America/Dominica
1607 Link America/Port_of_Spain America/Grenada
1608 Link America/Port_of_Spain America/Guadeloupe
1609 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1610 Link America/Port_of_Spain America/Montserrat
1611 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1612 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1613 Link America/Port_of_Spain America/St_Lucia
1614 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1615 Link America/Port_of_Spain America/St_Vincent
1616 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1617
1618 # Uruguay
1619 # From Paul Eggert (1993-11-18):
1620 # Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1621 # From Shanks & Pottenger:
1622 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1623 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1624 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1625 Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1666 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
1667 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
1668 Rule Uruguay 1993 only - Feb 28 0:00 0 -
1669 # From Eduardo Cota (2004-09-20):
1670 # The Uruguayan government has decreed a change in the local time....
1671 # http://www.presidencia.gub.uy/decretos/2004091502.htm
1672 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S
1673 # From Steffen Thorsen (2005-03-11):
1674 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
1675 # save energy ... it was postponed two weeks....
1676 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
1677 Rule Uruguay 2005 only - Mar 27 2:00 0 -
1678 # From Eduardo Cota (2005-09-27):
1679 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1680 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1681 # 02:00 local time, official time in Uruguay will be at GMT -2.
1682 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1683 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1684 # From Jesper Nørgaard Welen (2006-09-06):
1685 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1686 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S
1687 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 -
1688 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1689 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1690 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1691 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
1692 -3:00 Uruguay UY%sT
1693
1694 # Venezuela
1695 #
1696 # From John Stainforth (2007-11-28):
1697 # ... the change for Venezuela originally expected for 2007-12-31 has
1698 # been brought forward to 2007-12-09. The official announcement was
1699 # published today in the "Gaceta Oficial de la República Bolivariana
1700 # de Venezuela, número 38.819" (official document for all laws or
1701 # resolution publication)
1702 # http://www.globovision.com/news.php?nid=72208
1703
1704 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1705 Zone America/Caracas -4:27:44 - LMT 1890
1706 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1707 -4:30 - VET 1965 # Venezuela Time
1708 -4:00 - VET 2007 Dec 9 3:00
1709 -4:30 - VET
|
13 # San Diego: ACS Publications, Inc. (2003).
14 # Unfortunately this book contains many errors and cites no sources.
15 #
16 # Gwillim Law writes that a good source
17 # for recent time zone data is the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990. Except where otherwise noted,
21 # IATA SSIM is the source for entries after 1990.
22 #
23 # For data circa 1899, a common source is:
24 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
25 # http://www.jstor.org/stable/1774359
26 #
27 # Earlier editions of these tables used the North American style (e.g. ARST and
28 # ARDT for Argentine Standard and Daylight Time), but the following quote
29 # suggests that it's better to use European style (e.g. ART and ARST).
30 # I suggest the use of _Summer time_ instead of the more cumbersome
31 # _daylight-saving time_. _Summer time_ seems to be in general use
32 # in Europe and South America.
33 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
34 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
35 #
36 # Earlier editions of these tables also used the North American style
37 # for time zones in Brazil, but this was incorrect, as Brazilians say
38 # "summer time". Reinaldo Goulart, a São Paulo businessman active in
39 # the railroad sector, writes (1999-07-06):
40 # The subject of time zones is currently a matter of discussion/debate in
41 # Brazil. Let's say that "the Brasília time" is considered the
42 # "official time" because Brasília is the capital city.
43 # The other three time zones are called "Brasília time "minus one" or
44 # "plus one" or "plus two". As far as I know there is no such
45 # name/designation as "Eastern Time" or "Central Time".
46 # So I invented the following (English-language) abbreviations for now.
47 # Corrections are welcome!
48 # std dst
49 # -2:00 FNT FNST Fernando de Noronha
50 # -3:00 BRT BRST Brasília
51 # -4:00 AMT AMST Amazon
52 # -5:00 ACT ACST Acre
53
114 # DST was set to expire on March 5, not March 3, but since it was converted
115 # to standard time on March 3 it's more convenient for us to pretend that
116 # it ended on March 3.
117 Rule Arg 2000 only - Mar 3 0:00 0 -
118 #
119 # From Peter Gradelski via Steffen Thorsen (2000-03-01):
120 # We just checked with our São Paulo office and they say the government of
121 # Argentina decided not to become one of the countries that go on or off DST.
122 # So Buenos Aires should be -3 hours from GMT at all times.
123 #
124 # From Fabián L. Arce Jofré (2000-04-04):
125 # The law that claimed DST for Argentina was derogated by President Fernando
126 # de la Rúa on March 2, 2000, because it would make people spend more energy
127 # in the winter time, rather than less. The change took effect on March 3.
128 #
129 # From Mariano Absatz (2001-06-06):
130 # one of the major newspapers here in Argentina said that the 1999
131 # Timezone Law (which never was effectively applied) will (would?) be
132 # in effect.... The article is at
133 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm
134 # ... The Law itself is "Ley No. 25155", sanctioned on 1999-08-25, enacted
135 # 1999-09-17, and published 1999-09-21. The official publication is at:
136 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
137 # Regretfully, you have to subscribe (and pay) for the on-line version....
138 #
139 # (2001-06-12):
140 # the timezone for Argentina will not change next Sunday.
141 # Apparently it will do so on Sunday 24th....
142 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm
143 #
144 # (2001-06-25):
145 # Last Friday (yes, the last working day before the date of the change), the
146 # Senate annulled the 1999 law that introduced the changes later postponed.
147 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
148 # It remains the vote of the Deputies..., but it will be the same....
149 # This kind of things had always been done this way in Argentina.
150 # We are still -03:00 all year round in all of the country.
151 #
152 # From Steffen Thorsen (2007-12-21):
153 # A user (Leonardo Chaim) reported that Argentina will adopt DST....
154 # all of the country (all Zone-entries) are affected. News reports like
158 #
159 # From Jesper Nørgaard Welen (2007-12-26)
160 # The last hurdle of Argentina DST is over, the proposal was approved in
161 # the lower chamber too (Diputados) with a vote 192 for and 2 against.
162 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to
163 # the original scanned proposal, where the dates and the zero hours are
164 # clear and unambiguous...This is the article about final approval:
165 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996
166 #
167 # From Paul Eggert (2007-12-22):
168 # For dates after mid-2008, the following rules are my guesses and
169 # are quite possibly wrong, but are more likely than no DST at all.
170
171 # From Alexander Krivenyshev (2008-09-05):
172 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua),
173 # Argentina will start DST on Sunday October 19, 2008.
174 #
175 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html
176 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
177
178 # From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07)
179 # via Rodrigo Severo:
180 # Argentinian law No. 25.155 is no longer valid.
181 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm
182 # The new one is law No. 26.350
183 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm
184 # So there is no summer time in Argentina for now.
185
186 # From Mariano Absatz (2008-10-20):
187 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST
188 # in Argentina from 2008-10-19 until 2009-03-15.
189 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01
190 #
191
192 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer
193 # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La
194 # Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego
195 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01
196 #
197 # Press release 235 dated Saturday October 18th, from the Government of the
198 # Province of Jujuy saying it will not apply DST either (even when it was not
199 # included in Decree 1705/2008).
200 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc
201
202 # From fullinet (2009-10-18):
750 # State Bahia will return to Daylight savings time this year after 8 years off.
751 # The announcement was made by Governor Jaques Wagner in an interview to a
752 # television station in Salvador.
753
754 # In Portuguese:
755 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
756 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
757
758 # From Guilherme Bernardes Rodrigues (2011-10-07):
759 # There is news in the media, however there is still no decree about it.
760 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
761 # official agency about time in Brazil, and she confirmed that the old rule is
762 # still in force.
763
764 # From Guilherme Bernardes Rodrigues (2011-10-14)
765 # It's official, the President signed a decree that includes Bahia in summer
766 # time.
767 # [ and in a second message (same day): ]
768 # I found the decree.
769 #
770 # DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011
771 # Link :
772 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
773
774 # From Kelley Cook (2012-10-16):
775 # The governor of state of Bahia in Brazil announced on Thursday that
776 # due to public pressure, he is reversing the DST policy they implemented
777 # last year and will not be going to Summer Time on October 21st....
778 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
779
780 # From Rodrigo Severo (2012-10-16):
781 # Tocantins state will have DST.
782 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
783
784 # From Steffen Thorsen (2013-09-20):
785 # Tocantins in Brazil is very likely not to observe DST from October....
786 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
787 # We will keep this article updated when this is confirmed:
788 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
789
790 # From Steffen Thorsen (2013-10-17):
1077 #
1078 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1079 # Eirunepé, Envira, Ipixuna
1080 Zone America/Eirunepe -4:39:28 - LMT 1914
1081 -5:00 Brazil AC%sT 1988 Sep 12
1082 -5:00 - ACT 1993 Sep 28
1083 -5:00 Brazil AC%sT 1994 Sep 22
1084 -5:00 - ACT 2008 Jun 24 0:00
1085 -4:00 - AMT 2013 Nov 10
1086 -5:00 - ACT
1087 #
1088 # Acre (AC)
1089 Zone America/Rio_Branco -4:31:12 - LMT 1914
1090 -5:00 Brazil AC%sT 1988 Sep 12
1091 -5:00 - ACT 2008 Jun 24 0:00
1092 -4:00 - AMT 2013 Nov 10
1093 -5:00 - ACT
1094
1095 # Chile
1096
1097 # From Paul Eggert (2015-04-03):
1098 # Shanks & Pottenger says America/Santiago introduced standard time in
1099 # 1890 and rounds its UTC offset to 70W40; guess that in practice this
1100 # was the same offset as in 1916-1919. It also says Pacific/Easter
1101 # standardized on 109W22 in 1890; assume this didn't change the clocks.
1102 #
1103 # Dates for America/Santiago from 1910 to 2004 are primarily from
1104 # the following source, cited by Oscar van Vlijmen (2006-10-08):
1105 # [1] Chile Law
1106 # http://www.webexhibits.org/daylightsaving/chile.html
1107 # This contains a copy of a this official table:
1108 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1109 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1110 # [1] needs several corrections, though.
1111 #
1112 # The first set of corrections is from:
1113 # [2] History of the Official Time of Chile
1114 # http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See:
1115 # http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
1116 # This is an English translation of:
1117 # Historia de la hora oficial de Chile (retrieved 2012-10-24). See:
1118 # http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
1119 # A fancier Spanish version (requiring mouse-clicking) is at:
1120 # http://www.horaoficial.cl/historia_hora.html
1121 # Conflicts between [1] and [2] were resolved as follows:
1122 #
1123 # - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
1124 # Boletín No. 1, Aviso No. 1 (1910). Go with [2].
1125 #
1126 # - [1] says SMT was -4:42:45, [2] says Chile's official time from
1127 # 1916 to 1919 was -4:42:46.3, the meridian of Chile's National
1128 # Astronomical Observatory (OAN), then located in what is now
1129 # Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46.
1130 #
1131 # - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
1132 # Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2].
1133 #
1134 # - [1] does not give times for transitions; assume they occur
1135 # at midnight mainland time, the current common practice. However,
1136 # go with [2]'s specification of 23:00 for the 1947-05-21 transition.
1137 #
1138 # Another correction to [1] is from Jesper Nørgaard Welen, who
1139 # wrote (2006-10-08), "I think that there are some obvious mistakes in
1140 # the suggested link from Oscar van Vlijmen,... for instance entry 66
1141 # says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at
1142 # 1990-09-15 (they should have been 1990-09-15 and 1990-09-16
1143 # respectively), but anyhow it clears up some doubts too."
1144 #
1145 # Data for Pacific/Easter from 1910 through 1967 come from Shanks &
1146 # Pottenger. After that, for lack of better info assume
1147 # Pacific/Easter is always two hours behind America/Santiago;
1148 # this is known to work for DST transitions starting in 2008 and
1149 # may well be true for earlier transitions.
1150
1151 # From Eduardo Krell (1995-10-19):
1152 # The law says to switch to DST at midnight [24:00] on the second SATURDAY
1153 # of October.... The law is the same for March and October.
1154 # (1998-09-29):
1155 # Because of the drought this year, the government decided to go into
1156 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1157 # (unless there's another dry season next year, I guess).
1158
1159 # From Julio I. Pacheco Troncoso (1999-03-18):
1160 # Because of the same drought, the government decided to end DST later,
1161 # on April 3, (one-time change).
1162
1163 # From Germán Poo-Caamaño (2008-03-03):
1164 # Due to drought, Chile extends Daylight Time in three weeks. This
1165 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1166 # and Saturday 3/29 at 22:00 for Pacific/Easter)
1167 # The Supreme Decree is located at
1168 # http://www.shoa.cl/servicios/supremo316.pdf
1169 #
1170 # From José Miguel Garrido (2008-03-05):
1171 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
1172
1173 # From Angel Chiang (2010-03-04):
1174 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1175 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1176 #
1177 # From Arthur David Olson (2010-03-06):
1178 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1179
1180 # From Glenn Eychaner (2011-03-28):
1181 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1182 # In English:
1183 # Chile's clocks will go back an hour this year on the 7th of May instead
1184 # of this Saturday. They will go forward again the 3rd Saturday in
1185 # August, not in October as they have since 1968.
1186
1187 # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1188 # As stated in the website of the Chilean Energy Ministry
1189 # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1190 # The Chilean Government has decided to postpone the entrance into winter time
1191 # (to leave DST) from March 11 2012 to April 28th 2012....
1192 # Quote from the website communication:
1193 #
1194 # 6. For the year 2012, the dates of entry into winter time will be as follows:
1195 # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1196 # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1197 # of the same day.
1198 # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1199 # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
1200 # 01:00 on September 2.
1201
1202 # From Steffen Thorsen (2013-02-15):
1203 # According to several news sources, Chile has extended DST this year,
1204 # they will end DST later and start DST earlier than planned. They
1205 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1206 # start date is 2013-09-08 00:00....
1207 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1208
1209 # From José Miguel Garrido (2014-02-19):
1210 # Today appeared in the Diario Oficial a decree amending the time change
1211 # dates to 2014.
1212 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1213 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1214 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1215
1216 # From Eduardo Romero Urra (2015-03-03):
1217 # Today has been published officially that Chile will use the DST time
1218 # permanently until March 25 of 2017
1219 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1220 #
1221 # From Paul Eggert (2015-03-03):
1222 # For now, assume that the extension will persist indefinitely.
1223
1224 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1225 Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
1226 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1227 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1228 Rule Chile 1969 only - Mar 30 3:00u 0 -
1229 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1230 Rule Chile 1970 only - Mar 29 3:00u 0 -
1231 Rule Chile 1971 only - Mar 14 3:00u 0 -
1232 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1233 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1234 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1235 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1236 Rule Chile 1987 only - Apr 12 3:00u 0 -
1237 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1238 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S
1239 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1240 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1241 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1242 Rule Chile 1997 only - Mar 30 3:00u 0 -
1243 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1244 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1245 Rule Chile 1999 only - Apr 4 3:00u 0 -
1246 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1247 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1248 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1249 # which is used below in specifying the transition.
1250 Rule Chile 2008 only - Mar 30 3:00u 0 -
1251 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1252 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1253 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1254 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1255 Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 -
1256 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1257 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1258 # (1996-09) says 1998-03-08. Ignore these.
1259 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1260 Zone America/Santiago -4:42:46 - LMT 1890
1261 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1262 -5:00 - CLT 1916 Jul 1 # Chile Time
1263 -4:42:46 - SMT 1918 Sep 10
1264 -4:00 - CLT 1919 Jul 1
1265 -4:42:46 - SMT 1927 Sep 1
1266 -5:00 Chile CL%sT 1932 Sep 1
1267 -4:00 - CLT 1942 Jun 1
1268 -5:00 - CLT 1942 Aug 1
1269 -4:00 - CLT 1946 Jul 15
1270 -4:00 1:00 CLST 1946 Sep 1 # central Chile
1271 -4:00 - CLT 1947 Apr 1
1272 -5:00 - CLT 1947 May 21 23:00
1273 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1274 -3:00 - CLT
1275 Zone Pacific/Easter -7:17:28 - LMT 1890
1276 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1277 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time
1278 -6:00 Chile EAS%sT 2015 Apr 26 3:00u
1279 -5:00 - EAST
1280 #
1281 # Salas y Gómez Island is uninhabited.
1282 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1283 # and Antarctic bases, are like America/Santiago.
1284
1285 # Antarctic base using South American rules
1286 # (See the file 'antarctica' for more.)
1287 #
1288 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1289 #
1290 # From Ethan Dicks (1996-10-06):
1291 # It keeps the same time as Punta Arenas, Chile, because, just like us
1292 # and the South Pole, that's the other end of their supply line....
1293 # I verified with someone who was there that since 1980,
1294 # Palmer has followed Chile. Prior to that, before the Falklands War,
1295 # Palmer used to be supplied from Argentina.
1296 #
1297 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1298 Zone Antarctica/Palmer 0 - zzz 1965
1299 -4:00 Arg AR%sT 1969 Oct 5
1300 -3:00 Arg AR%sT 1982 May
1301 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1302 -3:00 - CLT
1303
1304 # Colombia
1305
1306 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1307 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1308
1309 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1310 Rule CO 1992 only - May 3 0:00 1:00 S
1311 Rule CO 1993 only - Apr 4 0:00 0 -
1312 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1313 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1314 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1315 -5:00 CO CO%sT # Colombia Time
1316 # Malpelo, Providencia, San Andres
1317 # no information; probably like America/Bogota
1318
1319 # Curaçao
1320
1321 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1322 #
1323 # From Paul Eggert (2006-03-22):
1512 # I have three independent reports that Paraguay changed to DST this Sunday
1513 # (10-01).
1514 #
1515 # Translated by Gwillim Law (2001-02-27) from
1516 # Noticias, a daily paper in Asunción, Paraguay (2000-10-01):
1517 # http://www.diarionoticias.com.py/011000/nacional/naciona1.htm
1518 # Starting at 0:00 today, the clock will be set forward 60 minutes, in
1519 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change
1520 # system has been operating for several years. Formerly there was a separate
1521 # decree each year; the new law has the same effect, but permanently. Every
1522 # year, the time will change on the first Sunday of October; likewise, the
1523 # clock will be set back on the first Sunday of March.
1524 #
1525 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
1526 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
1527 Rule Para 1997 only - Feb lastSun 0:00 0 -
1528 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
1529 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
1530 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -
1531 # From Rives McDow (2002-02-28):
1532 # A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the
1533 # dst method to be from the first Sunday in September to the first Sunday in
1534 # April.
1535 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 -
1536 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S
1537 #
1538 # From Jesper Nørgaard Welen (2005-01-02):
1539 # There are several sources that claim that Paraguay made
1540 # a timezone rule change in autumn 2004.
1541 # From Steffen Thorsen (2005-01-05):
1542 # Decree 1,867 (2004-03-05)
1543 # From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)
1544 # http://www.presidencia.gov.py/decretos/D1867.pdf
1545 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S
1546 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 -
1547 # From Carlos Raúl Perasso (2010-02-18):
1548 # By decree number 3958 issued yesterday
1549 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf
1550 # Paraguay changes its DST schedule, postponing the March rule to April and
1551 # modifying the October date. The decree reads:
1552 # ...
1611
1612 # South Sandwich Is
1613 # uninhabited; scientific personnel have wintered
1614
1615 # Suriname
1616 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1617 Zone America/Paramaribo -3:40:40 - LMT 1911
1618 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1619 -3:40:36 - PMT 1945 Oct # The capital moved?
1620 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
1621 -3:30 - SRT 1984 Oct # Suriname Time
1622 -3:00 - SRT
1623
1624 # Trinidad and Tobago
1625 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1626 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1627 -4:00 - AST
1628
1629 # These all agree with Trinidad and Tobago since 1970.
1630 Link America/Port_of_Spain America/Anguilla
1631 Link America/Port_of_Spain America/Antigua
1632 Link America/Port_of_Spain America/Dominica
1633 Link America/Port_of_Spain America/Grenada
1634 Link America/Port_of_Spain America/Guadeloupe
1635 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1636 Link America/Port_of_Spain America/Montserrat
1637 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1638 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1639 Link America/Port_of_Spain America/St_Lucia
1640 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1641 Link America/Port_of_Spain America/St_Vincent
1642 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1643
1644 # Uruguay
1645 # From Paul Eggert (1993-11-18):
1646 # Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1647 # From Shanks & Pottenger:
1648 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1649 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1650 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1651 Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1692 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
1693 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
1694 Rule Uruguay 1993 only - Feb 28 0:00 0 -
1695 # From Eduardo Cota (2004-09-20):
1696 # The Uruguayan government has decreed a change in the local time....
1697 # http://www.presidencia.gub.uy/decretos/2004091502.htm
1698 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S
1699 # From Steffen Thorsen (2005-03-11):
1700 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
1701 # save energy ... it was postponed two weeks....
1702 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
1703 Rule Uruguay 2005 only - Mar 27 2:00 0 -
1704 # From Eduardo Cota (2005-09-27):
1705 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1706 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1707 # 02:00 local time, official time in Uruguay will be at GMT -2.
1708 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1709 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1710 # From Jesper Nørgaard Welen (2006-09-06):
1711 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1712 #
1713 # From Steffen Thorsen (2015-06-30):
1714 # ... it looks like they will not be using DST the coming summer:
1715 # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
1716 # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/
1717 # From Paul Eggert (2015-06-30):
1718 # Apparently restaurateurs complained that DST caused people to go to the beach
1719 # instead of out to dinner.
1720 # From Pablo Camargo (2015-07-13):
1721 # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
1722 # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
1723 Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S
1724 Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 -
1725 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1726 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1727 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1728 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
1729 -3:00 Uruguay UY%sT
1730
1731 # Venezuela
1732 #
1733 # From Paul Eggert (2015-07-28):
1734 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1735 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1736 #
1737 # From John Stainforth (2007-11-28):
1738 # ... the change for Venezuela originally expected for 2007-12-31 has
1739 # been brought forward to 2007-12-09. The official announcement was
1740 # published today in the "Gaceta Oficial de la República Bolivariana
1741 # de Venezuela, número 38.819" (official document for all laws or
1742 # resolution publication)
1743 # http://www.globovision.com/news.php?nid=72208
1744
1745 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1746 Zone America/Caracas -4:27:44 - LMT 1890
1747 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1748 -4:30 - VET 1965 Jan 1 0:00 # Venezuela T.
1749 -4:00 - VET 2007 Dec 9 3:00
1750 -4:30 - VET
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