1 # 2 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 # 4 # This code is free software; you can redistribute it and/or modify it 5 # under the terms of the GNU General Public License version 2 only, as 6 # published by the Free Software Foundation. Sun designates this 7 # particular file as subject to the "Classpath" exception as provided 8 # by Sun in the LICENSE file that accompanied this code. 9 # 10 # This code is distributed in the hope that it will be useful, but WITHOUT 11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 # version 2 for more details (a copy is included in the LICENSE file that 14 # accompanied this code). 15 # 16 # You should have received a copy of the GNU General Public License version 17 # 2 along with this work; if not, write to the Free Software Foundation, 18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 # 20 # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 21 # CA 95054 USA or visit www.sun.com if you need additional information or 22 # have any questions. 23 # 24 # @(#)southamerica 8.29 25 # <pre> 26 27 # This data is by no means authoritative; if you think you know better, 28 # go ahead and edit the file (and please send any changes to 29 # tz@elsie.nci.nih.gov for general use in the future). 30 31 # From Paul Eggert (2006-03-22): 32 # A good source for time zone historical data outside the U.S. is 33 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 34 # San Diego: ACS Publications, Inc. (2003). 35 # 36 # Gwillim Law writes that a good source 37 # for recent time zone data is the International Air Transport 38 # Association's Standard Schedules Information Manual (IATA SSIM), 39 # published semiannually. Law sent in several helpful summaries 40 # of the IATA's data after 1990. 41 # 42 # Except where otherwise noted, Shanks & Pottenger is the source for 43 # entries through 1990, and IATA SSIM is the source for entries afterwards. 44 # 45 # Earlier editions of these tables used the North American style (e.g. ARST and 46 # ARDT for Argentine Standard and Daylight Time), but the following quote 47 # suggests that it's better to use European style (e.g. ART and ARST). 48 # I suggest the use of _Summer time_ instead of the more cumbersome 49 # _daylight-saving time_. _Summer time_ seems to be in general use 50 # in Europe and South America. 51 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in 52 # H L Mencken, _The American Language: Supplement I_ (1960), p 466 53 # 54 # Earlier editions of these tables also used the North American style 55 # for time zones in Brazil, but this was incorrect, as Brazilians say 56 # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 57 # the railroad sector, writes (1999-07-06): 58 # The subject of time zones is currently a matter of discussion/debate in 59 # Brazil. Let's say that "the Brasilia time" is considered the 60 # "official time" because Brasilia is the capital city. 61 # The other three time zones are called "Brasilia time "minus one" or 62 # "plus one" or "plus two". As far as I know there is no such 63 # name/designation as "Eastern Time" or "Central Time". 64 # So I invented the following (English-language) abbreviations for now. 65 # Corrections are welcome! 66 # std dst 67 # -2:00 FNT FNST Fernando de Noronha 68 # -3:00 BRT BRST Brasilia 69 # -4:00 AMT AMST Amazon 70 # -5:00 ACT ACST Acre 71 72 ############################################################################### 73 74 ############################################################################### 75 76 # Argentina 77 78 # From Bob Devine (1988-01-28): 79 # Argentina: first Sunday in October to first Sunday in April since 1976. 80 # Double Summer time from 1969 to 1974. Switches at midnight. 81 82 # From U. S. Naval Observatory (1988-01-199): 83 # ARGENTINA 3 H BEHIND UTC 84 85 # From Hernan G. Otero (1995-06-26): 86 # I am sending modifications to the Argentine time zone table... 87 # AR was chosen because they are the ISO letters that represent Argentina. 88 89 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 90 Rule Arg 1930 only - Dec 1 0:00 1:00 S 91 Rule Arg 1931 only - Apr 1 0:00 0 - 92 Rule Arg 1931 only - Oct 15 0:00 1:00 S 93 Rule Arg 1932 1940 - Mar 1 0:00 0 - 94 Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 95 Rule Arg 1940 only - Jul 1 0:00 1:00 S 96 Rule Arg 1941 only - Jun 15 0:00 0 - 97 Rule Arg 1941 only - Oct 15 0:00 1:00 S 98 Rule Arg 1943 only - Aug 1 0:00 0 - 99 Rule Arg 1943 only - Oct 15 0:00 1:00 S 100 Rule Arg 1946 only - Mar 1 0:00 0 - 101 Rule Arg 1946 only - Oct 1 0:00 1:00 S 102 Rule Arg 1963 only - Oct 1 0:00 0 - 103 Rule Arg 1963 only - Dec 15 0:00 1:00 S 104 Rule Arg 1964 1966 - Mar 1 0:00 0 - 105 Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 106 Rule Arg 1967 only - Apr 2 0:00 0 - 107 Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 108 Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 109 Rule Arg 1974 only - Jan 23 0:00 1:00 S 110 Rule Arg 1974 only - May 1 0:00 0 - 111 Rule Arg 1988 only - Dec 1 0:00 1:00 S 112 # 113 # From Hernan G. Otero (1995-06-26): 114 # These corrections were contributed by InterSoft Argentina S.A., 115 # obtaining the data from the: 116 # Talleres de Hidrografia Naval Argentina 117 # (Argentine Naval Hydrography Institute) 118 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 119 Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 120 # 121 # From Hernan G. Otero (1995-06-26): 122 # From this moment on, the law that mandated the daylight saving 123 # time corrections was derogated and no more modifications 124 # to the time zones (for daylight saving) are now made. 125 # 126 # From Rives McDow (2000-01-10): 127 # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 128 # which did not result in the switch of a time zone, as they stayed 9 hours 129 # from the International Date Line. 130 Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 131 # From Paul Eggert (2007-12-28): 132 # DST was set to expire on March 5, not March 3, but since it was converted 133 # to standard time on March 3 it's more convenient for us to pretend that 134 # it ended on March 3. 135 Rule Arg 2000 only - Mar 3 0:00 0 - 136 # 137 # From Peter Gradelski via Steffen Thorsen (2000-03-01): 138 # We just checked with our Sao Paulo office and they say the government of 139 # Argentina decided not to become one of the countries that go on or off DST. 140 # So Buenos Aires should be -3 hours from GMT at all times. 141 # 142 # From Fabian L. Arce Jofre (2000-04-04): 143 # The law that claimed DST for Argentina was derogated by President Fernando 144 # de la Rua on March 2, 2000, because it would make people spend more energy 145 # in the winter time, rather than less. The change took effect on March 3. 146 # 147 # From Mariano Absatz (2001-06-06): 148 # one of the major newspapers here in Argentina said that the 1999 149 # Timezone Law (which never was effectively applied) will (would?) be 150 # in effect.... The article is at 151 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm 152 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 153 # 1999-09-17, and published 1999-09-21. The official publication is at: 154 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 155 # Regretfully, you have to subscribe (and pay) for the on-line version.... 156 # 157 # (2001-06-12): 158 # the timezone for Argentina will not change next Sunday. 159 # Apparently it will do so on Sunday 24th.... 160 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm 161 # 162 # (2001-06-25): 163 # Last Friday (yes, the last working day before the date of the change), the 164 # Senate annulled the 1999 law that introduced the changes later postponed. 165 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 166 # It remains the vote of the Deputies..., but it will be the same.... 167 # This kind of things had always been done this way in Argentina. 168 # We are still -03:00 all year round in all of the country. 169 # 170 # From Steffen Thorsen (2007-12-21): 171 # A user (Leonardo Chaim) reported that Argentina will adopt DST.... 172 # all of the country (all Zone-entries) are affected. News reports like 173 # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 174 # that Argentina will use DST next year as well, from October to 175 # March, although exact rules are not given. 176 # 177 # From Jesper Norgaard Welen (2007-12-26) 178 # The last hurdle of Argentina DST is over, the proposal was approved in 179 # the lower chamber too (Deputados) with a vote 192 for and 2 against. 180 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 181 # the original scanned proposal, where the dates and the zero hours are 182 # clear and unambiguous...This is the article about final approval: 183 # <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 184 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 185 # </a> 186 # 187 # From Paul Eggert (2007-12-22): 188 # For dates after mid-2008, the following rules are my guesses and 189 # are quite possibly wrong, but are more likely than no DST at all. 190 191 # From Alexander Krivenyshev (2008-09-05): 192 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 193 # Argentina will start DST on Sunday October 19, 2008. 194 # 195 # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 196 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 197 # </a> 198 # OR 199 # <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 200 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 201 # </a> 202 203 Rule Arg 2007 only - Dec 30 0:00 1:00 S 204 Rule Arg 2008 max - Mar Sun>=15 0:00 0 - 205 Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S 206 207 # From Mariano Absatz (2004-05-21): 208 # Today it was officially published that the Province of Mendoza is changing 209 # its timezone this winter... starting tomorrow night.... 210 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 211 # From Paul Eggert (2004-05-24): 212 # It's Law No. 7,210. This change is due to a public power emergency, so for 213 # now we'll assume it's for this year only. 214 # 215 # From Paul Eggert (2006-03-22): 216 # <a href="http://www.spicasc.net/horvera.html"> 217 # Hora de verano para la Republica Argentina (2003-06-08) 218 # </a> says that standard time in Argentina from 1894-10-31 219 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value 220 # over Shanks & Pottenger. 221 # 222 # From Mariano Absatz (2004-06-05): 223 # These media articles from a major newspaper mostly cover the current state: 224 # http://www.lanacion.com.ar/04/05/27/de_604825.asp 225 # http://www.lanacion.com.ar/04/05/28/de_605203.asp 226 # 227 # The following eight (8) provinces pulled clocks back to UTC-04:00 at 228 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 229 # Apparently, all nine provinces would go back to UTC-03:00 at the same 230 # time in October 17th. 231 # 232 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 233 # Tierra del Fuego, Tucuman. 234 # 235 # From Mariano Absatz (2004-06-14): 236 # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 237 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 238 # annoyance with the change is much higher than the power savings obtained.... 239 # 240 # From Gwillim Law (2004-06-14): 241 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 242 # "The time change in Tierra del Fuego was a conflicted decision from 243 # the start. The government had decreed that the measure would take 244 # effect on June 1, but a normative error forced the new time to begin 245 # three days earlier, from a Saturday to a Sunday.... 246 # Our understanding was that the change was originally scheduled to take place 247 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 248 # provinces). Sunday was May 30, only two days earlier. So the article 249 # contains a contradiction. I would give more credence to the Saturday/Sunday 250 # date than the "three days earlier" phrase, and conclude that Tierra del 251 # Fuego set its clocks back at 2004-05-30 00:00. 252 # 253 # From Steffen Thorsen (2004-10-05): 254 # The previous law 7210 which changed the province of Mendoza's time zone 255 # back in May have been modified slightly in a new law 7277, which set the 256 # new end date to 2004-09-26 (original date was 2004-10-17). 257 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 258 # 259 # From Mariano Absatz (2004-10-05): 260 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 261 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 262 # at midnight between Saturday, July 24th and Sunday, July 25th.... 263 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html 264 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html 265 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html 266 267 # From Alex Krivenyshev (2008-01-17): 268 # Here are articles that Argentina Province San Luis is planning to end DST 269 # as earlier as upcoming Monday January 21, 2008 or February 2008: 270 # 271 # Provincia argentina retrasa reloj y marca diferencia con resto del pais 272 # (Argentine Province delayed clock and mark difference with the rest of the 273 # country) 274 # <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 275 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 276 # </a> 277 # 278 # Es inminente que en San Luis atrasen una hora los relojes 279 # (It is imminent in San Luis clocks one hour delay) 280 # <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 281 # http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 282 # </a> 283 # 284 # <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 285 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 286 # </a> 287 288 # From Jesper Norgaard Welen (2008-01-18): 289 # The page of the San Luis provincial government 290 # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 291 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 292 # </a> 293 # confirms what Alex Krivenyshev has earlier sent to the tz 294 # emailing list about that San Luis plans to return to standard 295 # time much earlier than the rest of the country. It also 296 # confirms that upon request the provinces San Juan and Mendoza 297 # refused to follow San Luis in this change. 298 # 299 # The change is supposed to take place Monday the 21.st at 0:00 300 # hours. As far as I understand it if this goes ahead, we need 301 # a new timezone for San Luis (although there are also documented 302 # independent changes in the southamerica file of San Luis in 303 # 1990 and 1991 which has not been confirmed). 304 305 # From Jesper Norgaard Welen (2008-01-25): 306 # Unfortunately the below page has become defunct, about the San Luis 307 # time change. Perhaps because it now is part of a group of pages "Most 308 # important pages of 2008." 309 # 310 # You can use 311 # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 312 # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 313 # </a> 314 # instead it seems. Or use "Buscador" from the main page of the San Luis 315 # government, and fill in "huso" and click OK, and you will get 3 pages 316 # from which the first one is identical to the above. 317 318 # From Mariano Absatz (2008-01-28): 319 # I can confirm that the Province of San Luis (and so far only that 320 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008 321 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back 322 # 1 hour), and they intend to keep UTC-3 as their timezone all year round 323 # (that is, unless they change their mind any minute now). 324 # 325 # So we'll have to add yet another city to 'southamerica' (I think San 326 # Luis city is the mos populated city in the Province, so it'd be 327 # America/Argentina/San_Luis... of course I can't remember if San Luis's 328 # history of particular changes goes along with Mendoza or San Juan :-( 329 # (I only remember not being able to collect hard facts about San Luis 330 # back in 2004, when these provinces changed to UTC-4 for a few days, I 331 # mailed them personally and never got an answer). 332 333 # From Paul Eggert (2008-06-30): 334 # Unless otherwise specified, data are from Shanks & Pottenger through 1992, 335 # from the IATA otherwise. As noted below, Shanks & Pottenger say that 336 # America/Cordoba split into 6 subregions during 1991/1992, one of which 337 # was America/San_Luis, but we haven't verified this yet so for now we'll 338 # keep America/Cordoba a single region rather than splitting it into the 339 # other 5 subregions. 340 341 # 342 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 343 # 344 # Buenos Aires (BA), Capital Federal (CF), 345 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 346 -4:16:48 - CMT 1920 May # Cordoba Mean Time 347 -4:00 - ART 1930 Dec 348 -4:00 Arg AR%sT 1969 Oct 5 349 -3:00 Arg AR%sT 1999 Oct 3 350 -4:00 Arg AR%sT 2000 Mar 3 351 -3:00 Arg AR%sT 352 # 353 # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 354 # Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), 355 # La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 356 # 357 # Shanks & Pottenger also make the following claims, which we haven't verified: 358 # - Formosa switched to -3:00 on 1991-01-07. 359 # - Misiones switched to -3:00 on 1990-12-29. 360 # - Chaco switched to -3:00 on 1991-01-04. 361 # - Santiago del Estero switched to -4:00 on 1991-04-01, 362 # then to -3:00 on 1991-04-26. 363 # 364 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 365 -4:16:48 - CMT 1920 May 366 -4:00 - ART 1930 Dec 367 -4:00 Arg AR%sT 1969 Oct 5 368 -3:00 Arg AR%sT 1991 Mar 3 369 -4:00 - WART 1991 Oct 20 370 -3:00 Arg AR%sT 1999 Oct 3 371 -4:00 Arg AR%sT 2000 Mar 3 372 -3:00 Arg AR%sT 373 # 374 # Tucuman (TM) 375 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 376 -4:16:48 - CMT 1920 May 377 -4:00 - ART 1930 Dec 378 -4:00 Arg AR%sT 1969 Oct 5 379 -3:00 Arg AR%sT 1991 Mar 3 380 -4:00 - WART 1991 Oct 20 381 -3:00 Arg AR%sT 1999 Oct 3 382 -4:00 Arg AR%sT 2000 Mar 3 383 -3:00 - ART 2004 Jun 1 384 -4:00 - WART 2004 Jun 13 385 -3:00 Arg AR%sT 386 # 387 # La Rioja (LR) 388 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 389 -4:16:48 - CMT 1920 May 390 -4:00 - ART 1930 Dec 391 -4:00 Arg AR%sT 1969 Oct 5 392 -3:00 Arg AR%sT 1991 Mar 1 393 -4:00 - WART 1991 May 7 394 -3:00 Arg AR%sT 1999 Oct 3 395 -4:00 Arg AR%sT 2000 Mar 3 396 -3:00 - ART 2004 Jun 1 397 -4:00 - WART 2004 Jun 20 398 -3:00 Arg AR%sT 399 # 400 # San Juan (SJ) 401 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 402 -4:16:48 - CMT 1920 May 403 -4:00 - ART 1930 Dec 404 -4:00 Arg AR%sT 1969 Oct 5 405 -3:00 Arg AR%sT 1991 Mar 1 406 -4:00 - WART 1991 May 7 407 -3:00 Arg AR%sT 1999 Oct 3 408 -4:00 Arg AR%sT 2000 Mar 3 409 -3:00 - ART 2004 May 31 410 -4:00 - WART 2004 Jul 25 411 -3:00 Arg AR%sT 412 # 413 # Jujuy (JY) 414 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 415 -4:16:48 - CMT 1920 May 416 -4:00 - ART 1930 Dec 417 -4:00 Arg AR%sT 1969 Oct 5 418 -3:00 Arg AR%sT 1990 Mar 4 419 -4:00 - WART 1990 Oct 28 420 -4:00 1:00 WARST 1991 Mar 17 421 -4:00 - WART 1991 Oct 6 422 -3:00 1:00 ARST 1992 423 -3:00 Arg AR%sT 1999 Oct 3 424 -4:00 Arg AR%sT 2000 Mar 3 425 -3:00 Arg AR%sT 426 # 427 # Catamarca (CT), Chubut (CH) 428 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 429 -4:16:48 - CMT 1920 May 430 -4:00 - ART 1930 Dec 431 -4:00 Arg AR%sT 1969 Oct 5 432 -3:00 Arg AR%sT 1991 Mar 3 433 -4:00 - WART 1991 Oct 20 434 -3:00 Arg AR%sT 1999 Oct 3 435 -4:00 Arg AR%sT 2000 Mar 3 436 -3:00 - ART 2004 Jun 1 437 -4:00 - WART 2004 Jun 20 438 -3:00 Arg AR%sT 439 # 440 # Mendoza (MZ) 441 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 442 -4:16:48 - CMT 1920 May 443 -4:00 - ART 1930 Dec 444 -4:00 Arg AR%sT 1969 Oct 5 445 -3:00 Arg AR%sT 1990 Mar 4 446 -4:00 - WART 1990 Oct 15 447 -4:00 1:00 WARST 1991 Mar 1 448 -4:00 - WART 1991 Oct 15 449 -4:00 1:00 WARST 1992 Mar 1 450 -4:00 - WART 1992 Oct 18 451 -3:00 Arg AR%sT 1999 Oct 3 452 -4:00 Arg AR%sT 2000 Mar 3 453 -3:00 - ART 2004 May 23 454 -4:00 - WART 2004 Sep 26 455 -3:00 Arg AR%sT 456 # 457 # San Luis (SL) 458 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 459 -4:16:48 - CMT 1920 May 460 -4:00 - ART 1930 Dec 461 -4:00 Arg AR%sT 1969 Oct 5 462 -3:00 Arg AR%sT 1990 463 -3:00 1:00 ARST 1990 Mar 14 464 -4:00 - WART 1990 Oct 15 465 -4:00 1:00 WARST 1991 Mar 1 466 -4:00 - WART 1991 Jun 1 467 -3:00 - ART 1999 Oct 3 468 -4:00 1:00 WARST 2000 Mar 3 469 -3:00 - ART 2004 May 31 470 -4:00 - WART 2004 Jul 25 471 -3:00 Arg AR%sT 2008 Jan 21 472 -3:00 - ART 473 # 474 # Santa Cruz (SC) 475 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 476 -4:16:48 - CMT 1920 May # Cordoba Mean Time 477 -4:00 - ART 1930 Dec 478 -4:00 Arg AR%sT 1969 Oct 5 479 -3:00 Arg AR%sT 1999 Oct 3 480 -4:00 Arg AR%sT 2000 Mar 3 481 -3:00 - ART 2004 Jun 1 482 -4:00 - WART 2004 Jun 20 483 -3:00 Arg AR%sT 484 # 485 # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 486 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 487 -4:16:48 - CMT 1920 May # Cordoba Mean Time 488 -4:00 - ART 1930 Dec 489 -4:00 Arg AR%sT 1969 Oct 5 490 -3:00 Arg AR%sT 1999 Oct 3 491 -4:00 Arg AR%sT 2000 Mar 3 492 -3:00 - ART 2004 May 30 493 -4:00 - WART 2004 Jun 20 494 -3:00 Arg AR%sT 495 496 # Aruba 497 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 498 Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 499 -4:30 - ANT 1965 # Netherlands Antilles Time 500 -4:00 - AST 501 502 # Bolivia 503 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 504 Zone America/La_Paz -4:32:36 - LMT 1890 505 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 506 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 507 -4:00 - BOT # Bolivia Time 508 509 # Brazil 510 511 # From Paul Eggert (1993-11-18): 512 # The mayor of Rio recently attempted to change the time zone rules 513 # just in his city, in order to leave more summer time for the tourist trade. 514 # The rule change lasted only part of the day; 515 # the federal government refused to follow the city's rules, and business 516 # was in a chaos, so the mayor backed down that afternoon. 517 518 # From IATA SSIM (1996-02): 519 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 520 # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 521 # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 522 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 523 # [The last three states are new to this issue of the IATA SSIM.] 524 525 # From Gwillim Law (1996-10-07): 526 # Geography, history (Tocantins was part of Goias until 1989), and other 527 # sources of time zone information lead me to believe that AL, SE, and TO were 528 # always in BR1, and so the only change was whether or not they observed DST.... 529 # The earliest issue of the SSIM I have is 2/91. Each issue from then until 530 # 9/95 says that DST is observed only in the ten states I quoted from 9/95, 531 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 532 # (UTC-4).... The other two time zones given for Brazil are BR3, which is 533 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 534 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 535 # become part of the state of Pernambuco). The boundary between BR1 and BR2 536 # has never been clearly stated. They've simply been called East and West. 537 # However, some conclusions can be drawn from another IATA manual: the Airline 538 # Coding Directory, which lists close to 400 airports in Brazil. For each 539 # airport it gives a time zone which is coded to the SSIM. From that 540 # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 541 # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 542 # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 543 544 # From Marcos Tadeu (1998-09-27): 545 # <a href="http://pcdsh01.on.br/verao1.html"> 546 # Brazilian official page 547 # </a> 548 549 # From Jesper Norgaard (2000-11-03): 550 # [For an official list of which regions in Brazil use which time zones, see:] 551 # http://pcdsh01.on.br/Fusbr.htm 552 # http://pcdsh01.on.br/Fusbrhv.htm 553 554 # From Celso Doria via David Madeo (2002-10-09): 555 # The reason for the delay this year has to do with elections in Brazil. 556 # 557 # Unlike in the United States, elections in Brazil are 100% computerized and 558 # the results are known almost immediately. Yesterday, it was the first 559 # round of the elections when 115 million Brazilians voted for President, 560 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is 561 # counting (or re-counting) votes anymore and we know there will be a second 562 # round for the Presidency and also for some Governors. The 2nd round will 563 # take place on October 27th. 564 # 565 # The reason why the DST will only begin November 3rd is that the thousands 566 # of electoral machines used cannot have their time changed, and since the 567 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 568 # the Government decided to postpone DST, instead of changing the Constitution 569 # (maybe, for the next elections, it will be possible to change the clock)... 570 571 # From Rodrigo Severo (2004-10-04): 572 # It's just the biannual change made necessary by the much hyped, supposedly 573 # modern Brazilian eletronic voting machines which, apparently, can't deal 574 # with a time change between the first and the second rounds of the elections. 575 576 # From Steffen Thorsen (2007-09-20): 577 # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 578 # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 579 580 # From Paul Schulze (2008-06-24): 581 # ...by law number 11.662 of April 24, 2008 (published in the "Diario 582 # Oficial da Uniao"...) in Brazil there are changes in the timezones, 583 # effective today (00:00am at June 24, 2008) as follows: 584 # 585 # a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 586 # part of the Amazonas state that had this timezone now being put to the 587 # timezone UTC+4 588 # b) The whole Para state now is put at timezone UTC+3, instead of just 589 # part of it, as was before. 590 # 591 # This change follows a proposal of senator Tiao Viana of Acre state, that 592 # proposed it due to concerns about open television channels displaying 593 # programs inappropriate to youths in the states that had the timezone 594 # UTC+5 too early in the night. In the occasion, some more corrections 595 # were proposed, trying to unify the timezones of any given state. This 596 # change modifies timezone rules defined in decree 2.784 of 18 June, 597 # 1913. 598 599 # From Rodrigo Severo (2008-06-24): 600 # Just correcting the URL: 601 # <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008"> 602 # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008 603 # </a> 604 # 605 # As a result of the above Decree I believe the America/Rio_Branco 606 # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 607 # be created to represent the the west side of the Para State. I 608 # suggest this new timezone be called Santarem as the most 609 # important/populated city in the affected area. 610 # 611 # This new timezone would be the same as the Rio_Branco timezone up to 612 # the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 613 614 # From Alex Krivenyshev (2008-06-24): 615 # This is a quick reference page for New and Old Brazil Time Zones map. 616 # <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 617 # http://www.worldtimezone.com/brazil-time-new-old.php 618 # </a> 619 # 620 # - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 621 # (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 622 # part of Par state is moving to one timezone UTC- 03 (from UTC -04). 623 624 # From Paul Eggert (2002-10-10): 625 # The official decrees referenced below are mostly taken from 626 # <a href="http://pcdsh01.on.br/DecHV.html"> 627 # Decretos sobre o Horario de Verao no Brasil 628 # </a>. 629 630 # From Steffen Thorsen (2008-08-29): 631 # As announced by the government and many newspapers in Brazil late 632 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 633 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on 634 # past years experience with the elections, there was a good chance that 635 # the start was postponed to November, but it did not happen this year. 636 # 637 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html 638 # 639 # An official page about it: 640 # <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 641 # http://www.mme.gov.br/site/news/detail.do?newsId=16722 642 # </a> 643 # Note that this link does not always work directly, but must be accessed 644 # by going to 645 # <a href="http://www.mme.gov.br/first"> 646 # http://www.mme.gov.br/first 647 # </a> 648 # 649 # One example link that works directly: 650 # <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 651 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 652 # (Portuguese) 653 # </a> 654 # 655 # We have a written a short article about it as well: 656 # <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 657 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 658 # </a> 659 660 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 661 # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 662 # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 663 Rule Brazil 1931 only - Oct 3 11:00 1:00 S 664 Rule Brazil 1932 1933 - Apr 1 0:00 0 - 665 Rule Brazil 1932 only - Oct 3 0:00 1:00 S 666 # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 667 # revoked DST. 668 # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 669 # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 670 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 671 Rule Brazil 1950 only - Apr 16 1:00 0 - 672 Rule Brazil 1951 1952 - Apr 1 0:00 0 - 673 # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 674 Rule Brazil 1953 only - Mar 1 0:00 0 - 675 # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 676 # revoked DST. 677 # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 678 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 679 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 680 # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 681 # extended the above decree to all of the national territory on 12-09. 682 Rule Brazil 1963 only - Dec 9 0:00 1:00 S 683 # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 684 # extended summer time by one day to 1964-03-01 00:00 (start of school). 685 Rule Brazil 1964 only - Mar 1 0:00 0 - 686 # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 687 Rule Brazil 1965 only - Jan 31 0:00 1:00 S 688 Rule Brazil 1965 only - Mar 31 0:00 0 - 689 # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 690 Rule Brazil 1965 only - Dec 1 0:00 1:00 S 691 # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 692 Rule Brazil 1966 1968 - Mar 1 0:00 0 - 693 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 694 # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 695 # revoked DST. 696 # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 697 Rule Brazil 1985 only - Nov 2 0:00 1:00 S 698 # Decree 92,310 (1986-01-21) 699 # Decree 92,463 (1986-03-13) 700 Rule Brazil 1986 only - Mar 15 0:00 0 - 701 # Decree 93,316 (1986-10-01) 702 Rule Brazil 1986 only - Oct 25 0:00 1:00 S 703 Rule Brazil 1987 only - Feb 14 0:00 0 - 704 # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 705 Rule Brazil 1987 only - Oct 25 0:00 1:00 S 706 Rule Brazil 1988 only - Feb 7 0:00 0 - 707 # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 708 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 709 Rule Brazil 1988 only - Oct 16 0:00 1:00 S 710 Rule Brazil 1989 only - Jan 29 0:00 0 - 711 # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 712 # with the same exceptions 713 Rule Brazil 1989 only - Oct 15 0:00 1:00 S 714 Rule Brazil 1990 only - Feb 11 0:00 0 - 715 # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 716 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 717 # Decree 99,629 (1990-10-19) adds BA, MT. 718 Rule Brazil 1990 only - Oct 21 0:00 1:00 S 719 Rule Brazil 1991 only - Feb 17 0:00 0 - 720 # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 721 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 722 Rule Brazil 1991 only - Oct 20 0:00 1:00 S 723 Rule Brazil 1992 only - Feb 9 0:00 0 - 724 # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 725 # adopted by same states. 726 Rule Brazil 1992 only - Oct 25 0:00 1:00 S 727 Rule Brazil 1993 only - Jan 31 0:00 0 - 728 # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 729 # adopted by same states, plus AM. 730 # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 731 # web page corrected 2004-01-07) adopted by same states, minus AM. 732 # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 733 # adopted by same states, plus MT and TO. 734 # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 735 # adds AL, SE. 736 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 737 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 738 Rule Brazil 1996 only - Feb 11 0:00 0 - 739 # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 740 # adopted by same states, minus AL, SE. 741 Rule Brazil 1996 only - Oct 6 0:00 1:00 S 742 Rule Brazil 1997 only - Feb 16 0:00 0 - 743 # From Daniel C. Sobral (1998-02-12): 744 # In 1997, the DS began on October 6. The stated reason was that 745 # because international television networks ignored Brazil's policy on DS, 746 # they bought the wrong times on satellite for coverage of Pope's visit. 747 # This year, the ending date of DS was postponed to March 1 748 # to help dealing with the shortages of electric power. 749 # 750 # Decree 2,317 (1997-09-04), adopted by same states. 751 Rule Brazil 1997 only - Oct 6 0:00 1:00 S 752 # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 753 # (1998-02-10) 754 Rule Brazil 1998 only - Mar 1 0:00 0 - 755 # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 756 # adopted by the same states as before. 757 Rule Brazil 1998 only - Oct 11 0:00 1:00 S 758 Rule Brazil 1999 only - Feb 21 0:00 0 - 759 # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 760 # (1999-08-23) adopted by same states. 761 # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 762 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 763 Rule Brazil 1999 only - Oct 3 0:00 1:00 S 764 Rule Brazil 2000 only - Feb 27 0:00 0 - 765 # Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 766 # adopted by the same states as before. 767 # Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 768 # repeals DST in PE and RR, effective 2000-10-15 00:00. 769 # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 770 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 771 # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 772 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 773 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 774 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 775 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 776 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 777 Rule Brazil 2002 only - Nov 3 0:00 1:00 S 778 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 779 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 780 Rule Brazil 2003 only - Oct 19 0:00 1:00 S 781 # Decree 5,223 (2004-10-01) reestablishes DST in MT. 782 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 783 Rule Brazil 2004 only - Nov 2 0:00 1:00 S 784 # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 785 # adopted by the same states as before. 786 Rule Brazil 2005 only - Oct 16 0:00 1:00 S 787 # Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 788 # adopted by the same states as before. 789 Rule Brazil 2006 only - Nov 5 0:00 1:00 S 790 Rule Brazil 2007 only - Feb 25 0:00 0 - 791 # Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 792 # adopted by the same states as before. 793 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 794 # From Frederico A. C. Neves (2008-09-10): 795 # Acording to this decree 796 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 797 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 798 # </a> 799 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 800 # 3rd Feb Sunday. There is an exception on the return date when this is 801 # the Carnival Sunday then the return date will be the next Sunday... 802 Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 803 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 804 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 805 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 806 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 807 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 808 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 809 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 810 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 811 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 812 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 813 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 814 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 815 # From Arthur David Olson (2008-09-29): 816 # The next is wrong in some years but is better than nothing. 817 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 818 819 # The latest ruleset listed above says that the following states observe DST: 820 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 821 822 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 823 # 824 # Fernando de Noronha (administratively part of PE) 825 Zone America/Noronha -2:09:40 - LMT 1914 826 -2:00 Brazil FN%sT 1990 Sep 17 827 -2:00 - FNT 1999 Sep 30 828 -2:00 Brazil FN%sT 2000 Oct 15 829 -2:00 - FNT 2001 Sep 13 830 -2:00 Brazil FN%sT 2002 Oct 1 831 -2:00 - FNT 832 # Other Atlantic islands have no permanent settlement. 833 # These include Trindade and Martin Vaz (administratively part of ES), 834 # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 835 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 836 # it also included the Penedos. 837 # 838 # Amapa (AP), east Para (PA) 839 # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 840 # The division between east and west Para is the river Xingu. 841 # In the north a very small part from the river Javary (now Jari I guess, 842 # the border with Amapa) to the Amazon, then to the Xingu. 843 Zone America/Belem -3:13:56 - LMT 1914 844 -3:00 Brazil BR%sT 1988 Sep 12 845 -3:00 - BRT 846 # 847 # west Para (PA) 848 # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 849 Zone America/Santarem -3:38:48 - LMT 1914 850 -4:00 Brazil AM%sT 1988 Sep 12 851 -4:00 - AMT 2008 Jun 24 00:00 852 -3:00 - BRT 853 # 854 # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 855 # Paraiba (PB) 856 Zone America/Fortaleza -2:34:00 - LMT 1914 857 -3:00 Brazil BR%sT 1990 Sep 17 858 -3:00 - BRT 1999 Sep 30 859 -3:00 Brazil BR%sT 2000 Oct 22 860 -3:00 - BRT 2001 Sep 13 861 -3:00 Brazil BR%sT 2002 Oct 1 862 -3:00 - BRT 863 # 864 # Pernambuco (PE) (except Atlantic islands) 865 Zone America/Recife -2:19:36 - LMT 1914 866 -3:00 Brazil BR%sT 1990 Sep 17 867 -3:00 - BRT 1999 Sep 30 868 -3:00 Brazil BR%sT 2000 Oct 15 869 -3:00 - BRT 2001 Sep 13 870 -3:00 Brazil BR%sT 2002 Oct 1 871 -3:00 - BRT 872 # 873 # Tocantins (TO) 874 Zone America/Araguaina -3:12:48 - LMT 1914 875 -3:00 Brazil BR%sT 1990 Sep 17 876 -3:00 - BRT 1995 Sep 14 877 -3:00 Brazil BR%sT 2003 Sep 24 878 -3:00 - BRT 879 # 880 # Alagoas (AL), Sergipe (SE) 881 Zone America/Maceio -2:22:52 - LMT 1914 882 -3:00 Brazil BR%sT 1990 Sep 17 883 -3:00 - BRT 1995 Oct 13 884 -3:00 Brazil BR%sT 1996 Sep 4 885 -3:00 - BRT 1999 Sep 30 886 -3:00 Brazil BR%sT 2000 Oct 22 887 -3:00 - BRT 2001 Sep 13 888 -3:00 Brazil BR%sT 2002 Oct 1 889 -3:00 - BRT 890 # 891 # Bahia (BA) 892 # There are too many Salvadors elsewhere, so use America/Bahia instead 893 # of America/Salvador. 894 Zone America/Bahia -2:34:04 - LMT 1914 895 -3:00 Brazil BR%sT 2003 Sep 24 896 -3:00 - BRT 897 # 898 # Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 899 # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 900 # Santa Catarina (SC), Rio Grande do Sul (RS) 901 Zone America/Sao_Paulo -3:06:28 - LMT 1914 902 -3:00 Brazil BR%sT 1963 Oct 23 00:00 903 -3:00 1:00 BRST 1964 904 -3:00 Brazil BR%sT 905 # 906 # Mato Grosso do Sul (MS) 907 Zone America/Campo_Grande -3:38:28 - LMT 1914 908 -4:00 Brazil AM%sT 909 # 910 # Mato Grosso (MT) 911 Zone America/Cuiaba -3:44:20 - LMT 1914 912 -4:00 Brazil AM%sT 2003 Sep 24 913 -4:00 - AMT 2004 Oct 1 914 -4:00 Brazil AM%sT 915 # 916 # Rondonia (RO) 917 Zone America/Porto_Velho -4:15:36 - LMT 1914 918 -4:00 Brazil AM%sT 1988 Sep 12 919 -4:00 - AMT 920 # 921 # Roraima (RR) 922 Zone America/Boa_Vista -4:02:40 - LMT 1914 923 -4:00 Brazil AM%sT 1988 Sep 12 924 -4:00 - AMT 1999 Sep 30 925 -4:00 Brazil AM%sT 2000 Oct 15 926 -4:00 - AMT 927 # 928 # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 929 # The great circle line from Tabatinga to Porto Acre divides 930 # east from west Amazonas. 931 Zone America/Manaus -4:00:04 - LMT 1914 932 -4:00 Brazil AM%sT 1988 Sep 12 933 -4:00 - AMT 1993 Sep 28 934 -4:00 Brazil AM%sT 1994 Sep 22 935 -4:00 - AMT 936 # 937 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 938 # Eirunepe, Envira, Ipixuna 939 Zone America/Eirunepe -4:39:28 - LMT 1914 940 -5:00 Brazil AC%sT 1988 Sep 12 941 -5:00 - ACT 1993 Sep 28 942 -5:00 Brazil AC%sT 1994 Sep 22 943 -5:00 - ACT 2008 Jun 24 00:00 944 -4:00 - AMT 945 # 946 # Acre (AC) 947 Zone America/Rio_Branco -4:31:12 - LMT 1914 948 -5:00 Brazil AC%sT 1988 Sep 12 949 -5:00 - ACT 2008 Jun 24 00:00 950 -4:00 - AMT 951 952 # Chile 953 954 # From Eduardo Krell (1995-10-19): 955 # The law says to switch to DST at midnight [24:00] on the second SATURDAY 956 # of October.... The law is the same for March and October. 957 # (1998-09-29): 958 # Because of the drought this year, the government decided to go into 959 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 960 # (unless there's another dry season next year, I guess). 961 962 # From Julio I. Pacheco Troncoso (1999-03-18): 963 # Because of the same drought, the government decided to end DST later, 964 # on April 3, (one-time change). 965 966 # From Oscar van Vlijmen (2006-10-08): 967 # http://www.horaoficial.cl/cambio.htm 968 969 # From Jesper Norgaard Welen (2006-10-08): 970 # I think that there are some obvious mistakes in the suggested link 971 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 972 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 973 # (they should have been 1990-09-15 and 1990-09-16 respectively), but 974 # anyhow it clears up some doubts too. 975 976 # From Paul Eggert (2006-12-27): 977 # The following data for Chile and America/Santiago are from 978 # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 979 # Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 980 # & Pottenger, except with DST transitions after 1932 cloned from 981 # America/Santiago. The pre-1980 Pacific/Easter data are dubious, 982 # but we have no other source. 983 984 # From German Poo-Caaman~o (2008-03-03): 985 # Due to drought, Chile extends Daylight Time in three weeks. This 986 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago 987 # and Saturday 3/29 at 22:00 for Pacific/Easter) 988 # The Supreme Decree is located at 989 # <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 990 # http://www.shoa.cl/servicios/supremo316.pdf 991 # </a> 992 # and the instructions for 2008 are located in: 993 # <a href="http://www.horaoficial.cl/cambio.htm"> 994 # http://www.horaoficial.cl/cambio.htm 995 # </a>. 996 997 # From Jose Miguel Garrido (2008-03-05): 998 # ... 999 # You could see the announces of the change on 1000 # <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1001 # http://www.shoa.cl/noticias/2008/04hora/hora.htm 1002 # </a>. 1003 1004 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1005 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1006 Rule Chile 1928 1932 - Apr 1 0:00 0 - 1007 Rule Chile 1942 only - Jun 1 4:00u 0 - 1008 Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1009 Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1010 Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1011 Rule Chile 1947 only - Apr 1 4:00u 0 - 1012 Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1013 Rule Chile 1969 only - Mar 30 3:00u 0 - 1014 Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1015 Rule Chile 1970 only - Mar 29 3:00u 0 - 1016 Rule Chile 1971 only - Mar 14 3:00u 0 - 1017 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1018 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1019 Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1020 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1021 Rule Chile 1987 only - Apr 12 3:00u 0 - 1022 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1023 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1024 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1025 Rule Chile 1990 only - Mar 18 3:00u 0 - 1026 Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1027 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1028 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1029 Rule Chile 1997 only - Mar 30 3:00u 0 - 1030 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1031 Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1032 Rule Chile 1999 only - Apr 4 3:00u 0 - 1033 Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1034 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1035 # N.B.: the end of March 29 in Chile is March 30 in Universal time, 1036 # which is used below in specifying the transition. 1037 Rule Chile 2008 only - Mar 30 3:00u 0 - 1038 Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 1039 # IATA SSIM anomalies: (1992-02) says 1992-03-14; 1040 # (1996-09) says 1998-03-08. Ignore these. 1041 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1042 Zone America/Santiago -4:42:46 - LMT 1890 1043 -4:42:46 - SMT 1910 # Santiago Mean Time 1044 -5:00 - CLT 1916 Jul 1 # Chile Time 1045 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1046 -4:00 - CLT 1919 Jul 1 # Chile Time 1047 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1048 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1049 -4:00 Chile CL%sT 1050 Zone Pacific/Easter -7:17:44 - LMT 1890 1051 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1052 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1053 -6:00 Chile EAS%sT 1054 # 1055 # Sala y Gomez Island is like Pacific/Easter. 1056 # Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1057 # San Felix, and Antarctic bases, are like America/Santiago. 1058 1059 # Colombia 1060 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1061 Rule CO 1992 only - May 3 0:00 1:00 S 1062 Rule CO 1993 only - Apr 4 0:00 0 - 1063 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1064 Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1065 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1066 -5:00 CO CO%sT # Colombia Time 1067 # Malpelo, Providencia, San Andres 1068 # no information; probably like America/Bogota 1069 1070 # Curacao 1071 # 1072 # From Paul Eggert (2006-03-22): 1073 # Shanks & Pottenger say that The Bottom and Philipsburg have been at 1074 # -4:00 since standard time was introduced on 1912-03-02; and that 1075 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1076 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1077 # Saba Island has been like Curacao. 1078 # This all predates our 1970 cutoff, though. 1079 # 1080 # By July 2007 Curacao and St Maarten are planned to become 1081 # associated states within the Netherlands, much like Aruba; 1082 # Bonaire, Saba and St Eustatius would become directly part of the 1083 # Netherlands as Kingdom Islands. This won't affect their time zones 1084 # though, as far as we know. 1085 # 1086 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1087 Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1088 -4:30 - ANT 1965 # Netherlands Antilles Time 1089 -4:00 - AST 1090 1091 # Ecuador 1092 # 1093 # From Paul Eggert (2007-03-04): 1094 # Apparently Ecuador had a failed experiment with DST in 1992. 1095 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1096 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1097 # talk about "hora Sixto". Leave this alone for now, as we have no data. 1098 # 1099 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1100 Zone America/Guayaquil -5:19:20 - LMT 1890 1101 -5:14:00 - QMT 1931 # Quito Mean Time 1102 -5:00 - ECT # Ecuador Time 1103 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1104 -5:00 - ECT 1986 1105 -6:00 - GALT # Galapagos Time 1106 1107 # Falklands 1108 1109 # From Paul Eggert (2006-03-22): 1110 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1111 # the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1112 1113 # From Falkland Islands Government Office, London (2001-01-22) 1114 # via Jesper Norgaard: 1115 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1116 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 1117 # September. It is anticipated that the clocks will revert back at 2 1118 # am on Sunday 21 April 2002 and advance to summer time at 2 am on 1119 # Sunday 1 September. 1120 1121 # From Rives McDow (2001-02-13): 1122 # 1123 # I have communicated several times with people there, and the last 1124 # time I had communications that was helpful was in 1998. Here is 1125 # what was said then: 1126 # 1127 # "The general rule was that Stanley used daylight saving and the Camp 1128 # did not. However for various reasons many people in the Camp have 1129 # started to use daylight saving (known locally as 'Stanley Time') 1130 # There is no rule as to who uses daylight saving - it is a matter of 1131 # personal choice and so it is impossible to draw a map showing who 1132 # uses it and who does not. Any list would be out of date as soon as 1133 # it was produced. This year daylight saving ended on April 18/19th 1134 # and started again on September 12/13th. I do not know what the rule 1135 # is, but can find out if you like. We do not change at the same time 1136 # as UK or Chile." 1137 # 1138 # I did have in my notes that the rule was "Second Saturday in Sep at 1139 # 0:00 until third Saturday in Apr at 0:00". I think that this does 1140 # not agree in some cases with Shanks; is this true? 1141 # 1142 # Also, there is no mention in the list that some areas in the 1143 # Falklands do not use DST. I have found in my communications there 1144 # that these areas are on the western half of East Falkland and all of 1145 # West Falkland. Stanley is the only place that consistently observes 1146 # DST. Again, as in other places in the world, the farmers don't like 1147 # it. West Falkland is almost entirely sheep farmers. 1148 # 1149 # I know one lady there that keeps a list of which farm keeps DST and 1150 # which doesn't each year. She runs a shop in Stanley, and says that 1151 # the list changes each year. She uses it to communicate to her 1152 # customers, catching them when they are home for lunch or dinner. 1153 1154 # From Paul Eggert (2001-03-05): 1155 # For now, we'll just record the time in Stanley, since we have no 1156 # better info. 1157 1158 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1159 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1160 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1161 Rule Falk 1939 only - Oct 1 0:00 1:00 S 1162 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1163 Rule Falk 1943 only - Jan 1 0:00 0 - 1164 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1165 Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1166 Rule Falk 1984 only - Sep 16 0:00 1:00 S 1167 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1168 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1169 Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1170 Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1171 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1172 Zone Atlantic/Stanley -3:51:24 - LMT 1890 1173 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1174 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1175 -3:00 Falk FK%sT 1985 Sep 15 1176 -4:00 Falk FK%sT 1177 1178 # French Guiana 1179 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1180 Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1181 -4:00 - GFT 1967 Oct # French Guiana Time 1182 -3:00 - GFT 1183 1184 # Guyana 1185 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1186 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1187 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1188 -3:45 - GYT 1975 Jul 31 # Guyana Time 1189 -3:00 - GYT 1991 1190 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1191 -4:00 - GYT 1192 1193 # Paraguay 1194 # From Paul Eggert (2006-03-22): 1195 # Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1196 # and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1197 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1198 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1199 Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1200 Rule Para 1975 1978 - Mar 1 0:00 0 - 1201 Rule Para 1979 1991 - Apr 1 0:00 0 - 1202 Rule Para 1989 only - Oct 22 0:00 1:00 S 1203 Rule Para 1990 only - Oct 1 0:00 1:00 S 1204 Rule Para 1991 only - Oct 6 0:00 1:00 S 1205 Rule Para 1992 only - Mar 1 0:00 0 - 1206 Rule Para 1992 only - Oct 5 0:00 1:00 S 1207 Rule Para 1993 only - Mar 31 0:00 0 - 1208 Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1209 Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1210 Rule Para 1996 only - Mar 1 0:00 0 - 1211 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1212 # From Steffen Thorsen (2000-10-02): 1213 # I have three independent reports that Paraguay changed to DST this Sunday 1214 # (10-01). 1215 # 1216 # Translated by Gwillim Law (2001-02-27) from 1217 # <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1218 # Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1219 # </a>: 1220 # Starting at 0:00 today, the clock will be set forward 60 minutes, in 1221 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1222 # system has been operating for several years. Formerly there was a separate 1223 # decree each year; the new law has the same effect, but permanently. Every 1224 # year, the time will change on the first Sunday of October; likewise, the 1225 # clock will be set back on the first Sunday of March. 1226 # 1227 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1228 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1229 Rule Para 1997 only - Feb lastSun 0:00 0 - 1230 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1231 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1232 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1233 # From Rives McDow (2002-02-28): 1234 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1235 # dst method to be from the first Sunday in September to the first Sunday in 1236 # April. 1237 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1238 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1239 # 1240 # From Jesper Norgaard Welen (2005-01-02): 1241 # There are several sources that claim that Paraguay made 1242 # a timezone rule change in autumn 2004. 1243 # From Steffen Thorsen (2005-01-05): 1244 # Decree 1,867 (2004-03-05) 1245 # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1246 # <http://www.presidencia.gov.py/decretos/D1867.pdf> 1247 Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1248 Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1249 1250 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1251 Zone America/Asuncion -3:50:40 - LMT 1890 1252 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1253 -4:00 - PYT 1972 Oct # Paraguay Time 1254 -3:00 - PYT 1974 Apr 1255 -4:00 Para PY%sT 1256 1257 # Peru 1258 # 1259 # <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1260 # From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1261 # When we were in Peru in 1985-1986, they apparently switched over 1262 # sometime between December 29 and January 3 while we were on the Amazon. 1263 # 1264 # From Paul Eggert (2006-03-22): 1265 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1266 1267 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1268 Rule Peru 1938 only - Jan 1 0:00 1:00 S 1269 Rule Peru 1938 only - Apr 1 0:00 0 - 1270 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1271 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1272 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1273 Rule Peru 1986 1987 - Apr 1 0:00 0 - 1274 Rule Peru 1990 only - Jan 1 0:00 1:00 S 1275 Rule Peru 1990 only - Apr 1 0:00 0 - 1276 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1277 Rule Peru 1994 only - Jan 1 0:00 1:00 S 1278 Rule Peru 1994 only - Apr 1 0:00 0 - 1279 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1280 Zone America/Lima -5:08:12 - LMT 1890 1281 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1282 -5:00 Peru PE%sT # Peru Time 1283 1284 # South Georgia 1285 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1286 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1287 -2:00 - GST # South Georgia Time 1288 1289 # South Sandwich Is 1290 # uninhabited; scientific personnel have wintered 1291 1292 # Suriname 1293 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1294 Zone America/Paramaribo -3:40:40 - LMT 1911 1295 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1296 -3:40:36 - PMT 1945 Oct # The capital moved? 1297 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1298 -3:30 - SRT 1984 Oct # Suriname Time 1299 -3:00 - SRT 1300 1301 # Trinidad and Tobago 1302 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1303 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1304 -4:00 - AST 1305 1306 # Uruguay 1307 # From Paul Eggert (1993-11-18): 1308 # Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1309 # From Shanks & Pottenger: 1310 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1311 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1312 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1313 Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1314 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1315 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1316 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1317 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1318 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1319 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1320 # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1321 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1322 # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1323 # and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1324 Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1325 Rule Uruguay 1942 only - Jan 1 0:00 0 - 1326 Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1327 Rule Uruguay 1943 only - Mar 14 0:00 0 - 1328 Rule Uruguay 1959 only - May 24 0:00 1:00 S 1329 Rule Uruguay 1959 only - Nov 15 0:00 0 - 1330 Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1331 Rule Uruguay 1960 only - Mar 6 0:00 0 - 1332 Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1333 Rule Uruguay 1965 only - Sep 26 0:00 0 - 1334 Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1335 Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1336 Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1337 Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1338 Rule Uruguay 1972 only - Aug 15 0:00 0 - 1339 Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1340 Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1341 Rule Uruguay 1976 only - Oct 1 0:00 0 - 1342 Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1343 Rule Uruguay 1978 only - Apr 1 0:00 0 - 1344 Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1345 Rule Uruguay 1980 only - May 1 0:00 0 - 1346 Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1347 Rule Uruguay 1988 only - Mar 14 0:00 0 - 1348 Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1349 Rule Uruguay 1989 only - Mar 12 0:00 0 - 1350 Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1351 # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1352 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1353 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1354 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1355 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1356 Rule Uruguay 1993 only - Feb 28 0:00 0 - 1357 # From Eduardo Cota (2004-09-20): 1358 # The uruguayan government has decreed a change in the local time.... 1359 # http://www.presidencia.gub.uy/decretos/2004091502.htm 1360 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1361 # From Steffen Thorsen (2005-03-11): 1362 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1363 # save energy ... it was postponed two weeks.... 1364 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1365 Rule Uruguay 2005 only - Mar 27 2:00 0 - 1366 # From Eduardo Cota (2005-09-27): 1367 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1368 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1369 # 02:00 local time, official time in Uruguay will be at GMT -2. 1370 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1371 Rule Uruguay 2006 only - Mar 12 2:00 0 - 1372 # From Jesper Norgaard Welen (2006-09-06): 1373 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1374 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1375 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1376 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1377 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1378 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1379 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1380 -3:00 Uruguay UY%sT 1381 1382 # Venezuela 1383 # 1384 # From John Stainforth (2007-11-28): 1385 # ... the change for Venezuela originally expected for 2007-12-31 has 1386 # been brought forward to 2007-12-09. The official announcement was 1387 # published today in the "Gaceta Oficial de la Republica Bolivariana 1388 # de Venezuela, numero 38.819" (official document for all laws or 1389 # resolution publication) 1390 # http://www.globovision.com/news.php?nid=72208 1391 1392 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1393 Zone America/Caracas -4:27:44 - LMT 1890 1394 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1395 -4:30 - VET 1965 # Venezuela Time 1396 -4:00 - VET 2007 Dec 9 03:00 1397 -4:30 - VET