J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | # |
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| 21 | # CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | # have any questions. |
| 23 | # |
| 24 | # <pre> |
| 25 | |
| 26 | # This data is by no means authoritative; if you think you know better, |
| 27 | # go ahead and edit the file (and please send any changes to |
| 28 | # tz@elsie.nci.nih.gov for general use in the future). |
| 29 | |
| 30 | # From Paul Eggert (2006-03-22): |
| 31 | # A good source for time zone historical data outside the U.S. is |
| 32 | # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| 33 | # San Diego: ACS Publications, Inc. (2003). |
| 34 | # |
| 35 | # Gwillim Law writes that a good source |
| 36 | # for recent time zone data is the International Air Transport |
| 37 | # Association's Standard Schedules Information Manual (IATA SSIM), |
| 38 | # published semiannually. Law sent in several helpful summaries |
| 39 | # of the IATA's data after 1990. |
| 40 | # |
| 41 | # Except where otherwise noted, Shanks & Pottenger is the source for |
| 42 | # entries through 1990, and IATA SSIM is the source for entries afterwards. |
| 43 | # |
| 44 | # Earlier editions of these tables used the North American style (e.g. ARST and |
| 45 | # ARDT for Argentine Standard and Daylight Time), but the following quote |
| 46 | # suggests that it's better to use European style (e.g. ART and ARST). |
| 47 | # I suggest the use of _Summer time_ instead of the more cumbersome |
| 48 | # _daylight-saving time_. _Summer time_ seems to be in general use |
| 49 | # in Europe and South America. |
| 50 | # -- E O Cutler, _New York Times_ (1937-02-14), quoted in |
| 51 | # H L Mencken, _The American Language: Supplement I_ (1960), p 466 |
| 52 | # |
| 53 | # Earlier editions of these tables also used the North American style |
| 54 | # for time zones in Brazil, but this was incorrect, as Brazilians say |
| 55 | # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in |
| 56 | # the railroad sector, writes (1999-07-06): |
| 57 | # The subject of time zones is currently a matter of discussion/debate in |
| 58 | # Brazil. Let's say that "the Brasilia time" is considered the |
| 59 | # "official time" because Brasilia is the capital city. |
| 60 | # The other three time zones are called "Brasilia time "minus one" or |
| 61 | # "plus one" or "plus two". As far as I know there is no such |
| 62 | # name/designation as "Eastern Time" or "Central Time". |
| 63 | # So I invented the following (English-language) abbreviations for now. |
| 64 | # Corrections are welcome! |
| 65 | # std dst |
| 66 | # -2:00 FNT FNST Fernando de Noronha |
| 67 | # -3:00 BRT BRST Brasilia |
| 68 | # -4:00 AMT AMST Amazon |
| 69 | # -5:00 ACT ACST Acre |
| 70 | |
| 71 | ############################################################################### |
| 72 | |
| 73 | ############################################################################### |
| 74 | |
| 75 | # Argentina |
| 76 | |
| 77 | # From Bob Devine (1988-01-28): |
| 78 | # Argentina: first Sunday in October to first Sunday in April since 1976. |
| 79 | # Double Summer time from 1969 to 1974. Switches at midnight. |
| 80 | |
| 81 | # From U. S. Naval Observatory (1988-01-199): |
| 82 | # ARGENTINA 3 H BEHIND UTC |
| 83 | |
| 84 | # From Hernan G. Otero (1995-06-26): |
| 85 | # I am sending modifications to the Argentine time zone table... |
| 86 | # AR was chosen because they are the ISO letters that represent Argentina. |
| 87 | |
| 88 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 89 | Rule Arg 1930 only - Dec 1 0:00 1:00 S |
| 90 | Rule Arg 1931 only - Apr 1 0:00 0 - |
| 91 | Rule Arg 1931 only - Oct 15 0:00 1:00 S |
| 92 | Rule Arg 1932 1940 - Mar 1 0:00 0 - |
| 93 | Rule Arg 1932 1939 - Nov 1 0:00 1:00 S |
| 94 | Rule Arg 1940 only - Jul 1 0:00 1:00 S |
| 95 | Rule Arg 1941 only - Jun 15 0:00 0 - |
| 96 | Rule Arg 1941 only - Oct 15 0:00 1:00 S |
| 97 | Rule Arg 1943 only - Aug 1 0:00 0 - |
| 98 | Rule Arg 1943 only - Oct 15 0:00 1:00 S |
| 99 | Rule Arg 1946 only - Mar 1 0:00 0 - |
| 100 | Rule Arg 1946 only - Oct 1 0:00 1:00 S |
| 101 | Rule Arg 1963 only - Oct 1 0:00 0 - |
| 102 | Rule Arg 1963 only - Dec 15 0:00 1:00 S |
| 103 | Rule Arg 1964 1966 - Mar 1 0:00 0 - |
| 104 | Rule Arg 1964 1966 - Oct 15 0:00 1:00 S |
| 105 | Rule Arg 1967 only - Apr 2 0:00 0 - |
| 106 | Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S |
| 107 | Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - |
| 108 | Rule Arg 1974 only - Jan 23 0:00 1:00 S |
| 109 | Rule Arg 1974 only - May 1 0:00 0 - |
| 110 | Rule Arg 1988 only - Dec 1 0:00 1:00 S |
| 111 | # |
| 112 | # From Hernan G. Otero (1995-06-26): |
| 113 | # These corrections were contributed by InterSoft Argentina S.A., |
| 114 | # obtaining the data from the: |
| 115 | # Talleres de Hidrografia Naval Argentina |
| 116 | # (Argentine Naval Hydrography Institute) |
| 117 | Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - |
| 118 | Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S |
| 119 | # |
| 120 | # From Hernan G. Otero (1995-06-26): |
| 121 | # From this moment on, the law that mandated the daylight saving |
| 122 | # time corrections was derogated and no more modifications |
| 123 | # to the time zones (for daylight saving) are now made. |
| 124 | # |
| 125 | # From Rives McDow (2000-01-10): |
| 126 | # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, |
| 127 | # which did not result in the switch of a time zone, as they stayed 9 hours |
| 128 | # from the International Date Line. |
| 129 | Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S |
| 130 | Rule Arg 2000 only - Mar Sun>=1 0:00 0 - |
| 131 | # |
| 132 | # From Peter Gradelski via Steffen Thorsen (2000-03-01): |
| 133 | # We just checked with our Sao Paulo office and they say the government of |
| 134 | # Argentina decided not to become one of the countries that go on or off DST. |
| 135 | # So Buenos Aires should be -3 hours from GMT at all times. |
| 136 | # |
| 137 | # From Fabian L. Arce Jofre (2000-04-04): |
| 138 | # The law that claimed DST for Argentina was derogated by President Fernando |
| 139 | # de la Rua on March 2, 2000, because it would make people spend more energy |
| 140 | # in the winter time, rather than less. The change took effect on March 3. |
| 141 | # |
| 142 | # From Mariano Absatz (2001-06-06): |
| 143 | # one of the major newspapers here in Argentina said that the 1999 |
| 144 | # Timezone Law (which never was effectively applied) will (would?) be |
| 145 | # in effect.... The article is at |
| 146 | # http://ar.clarin.com/diario/2001-06-06/e-01701.htm |
| 147 | # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted |
| 148 | # 1999-09-17, and published 1999-09-21. The official publication is at: |
| 149 | # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF |
| 150 | # Regretfully, you have to subscribe (and pay) for the on-line version.... |
| 151 | # |
| 152 | # (2001-06-12): |
| 153 | # the timezone for Argentina will not change next Sunday. |
| 154 | # Apparently it will do so on Sunday 24th.... |
| 155 | # http://ar.clarin.com/diario/2001-06-12/s-03501.htm |
| 156 | # |
| 157 | # (2001-06-25): |
| 158 | # Last Friday (yes, the last working day before the date of the change), the |
| 159 | # Senate annulled the 1999 law that introduced the changes later postponed. |
| 160 | # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm |
| 161 | # It remains the vote of the Deputies..., but it will be the same.... |
| 162 | # This kind of things had always been done this way in Argentina. |
| 163 | # We are still -03:00 all year round in all of the country. |
| 164 | # |
| 165 | # From Mariano Absatz (2004-05-21): |
| 166 | # Today it was officially published that the Province of Mendoza is changing |
| 167 | # its timezone this winter... starting tomorrow night.... |
| 168 | # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf |
| 169 | # From Paul Eggert (2004-05-24): |
| 170 | # It's Law No. 7,210. This change is due to a public power emergency, so for |
| 171 | # now we'll assume it's for this year only. |
| 172 | # |
| 173 | # From Paul Eggert (2006-03-22): |
| 174 | # <a href="http://www.spicasc.net/horvera.html"> |
| 175 | # Hora de verano para la Republica Argentina (2003-06-08) |
| 176 | # </a> says that standard time in Argentina from 1894-10-31 |
| 177 | # to 1920-05-01 was -4:16:48.25. Go with this more-precise value |
| 178 | # over Shanks & Pottenger. |
| 179 | # |
| 180 | # From Mariano Absatz (2004-06-05): |
| 181 | # These media articles from a major newspaper mostly cover the current state: |
| 182 | # http://www.lanacion.com.ar/04/05/27/de_604825.asp |
| 183 | # http://www.lanacion.com.ar/04/05/28/de_605203.asp |
| 184 | # |
| 185 | # The following eight (8) provinces pulled clocks back to UTC-04:00 at |
| 186 | # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). |
| 187 | # Apparently, all nine provinces would go back to UTC-03:00 at the same |
| 188 | # time in October 17th. |
| 189 | # |
| 190 | # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, |
| 191 | # Tierra del Fuego, Tucuman. |
| 192 | # |
| 193 | # From Mariano Absatz (2004-06-14): |
| 194 | # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 |
| 195 | # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's |
| 196 | # annoyance with the change is much higher than the power savings obtained.... |
| 197 | # |
| 198 | # From Gwillim Law (2004-06-14): |
| 199 | # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... |
| 200 | # "The time change in Tierra del Fuego was a conflicted decision from |
| 201 | # the start. The government had decreed that the measure would take |
| 202 | # effect on June 1, but a normative error forced the new time to begin |
| 203 | # three days earlier, from a Saturday to a Sunday.... |
| 204 | # Our understanding was that the change was originally scheduled to take place |
| 205 | # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other |
| 206 | # provinces). Sunday was May 30, only two days earlier. So the article |
| 207 | # contains a contradiction. I would give more credence to the Saturday/Sunday |
| 208 | # date than the "three days earlier" phrase, and conclude that Tierra del |
| 209 | # Fuego set its clocks back at 2004-05-30 00:00. |
| 210 | # |
| 211 | # From Steffen Thorsen (2004-10-05): |
| 212 | # The previous law 7210 which changed the province of Mendoza's time zone |
| 213 | # back in May have been modified slightly in a new law 7277, which set the |
| 214 | # new end date to 2004-09-26 (original date was 2004-10-17). |
| 215 | # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf |
| 216 | # |
| 217 | # From Mariano Absatz (2004-10-05): |
| 218 | # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between |
| 219 | # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 |
| 220 | # at midnight between Saturday, July 24th and Sunday, July 25th.... |
| 221 | # http://www.sanjuan.gov.ar/prensa/archivo/000329.html |
| 222 | # http://www.sanjuan.gov.ar/prensa/archivo/000426.html |
| 223 | # http://www.sanjuan.gov.ar/prensa/archivo/000441.html |
| 224 | |
| 225 | # Unless otherwise specified, data are from Shanks & Pottenger through 1992, |
| 226 | # from the IATA otherwise. As noted below, Shanks & Pottenger say that |
| 227 | # America/Cordoba split into 6 subregions during 1991/1992, but we |
| 228 | # haven't verified this yet so for now we'll keep it a single region. |
| 229 | # |
| 230 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 231 | # |
| 232 | # Buenos Aires (BA), Capital Federal (CF), |
| 233 | Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 |
| 234 | -4:16:48 - CMT 1920 May # Cordoba Mean Time |
| 235 | -4:00 - ART 1930 Dec |
| 236 | -4:00 Arg AR%sT 1969 Oct 5 |
| 237 | -3:00 Arg AR%sT 1999 Oct 3 |
| 238 | -4:00 Arg AR%sT 2000 Mar 3 |
| 239 | -3:00 - ART |
| 240 | # |
| 241 | # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), |
| 242 | # Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), |
| 243 | # San Luis (SL), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) |
| 244 | # |
| 245 | # Shanks & Pottenger also make the following claims, which we haven't verified: |
| 246 | # - Formosa switched to -3:00 on 1991-01-07. |
| 247 | # - Misiones switched to -3:00 on 1990-12-29. |
| 248 | # - Chaco switched to -3:00 on 1991-01-04. |
| 249 | # - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15, |
| 250 | # then to -4:00 on 1991-03-01, then to -3:00 on 1991-06-01. |
| 251 | # - Santiago del Estero switched to -4:00 on 1991-04-01, |
| 252 | # then to -3:00 on 1991-04-26. |
| 253 | # |
| 254 | Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 |
| 255 | -4:16:48 - CMT 1920 May |
| 256 | -4:00 - ART 1930 Dec |
| 257 | -4:00 Arg AR%sT 1969 Oct 5 |
| 258 | -3:00 Arg AR%sT 1991 Mar 3 |
| 259 | -4:00 - WART 1991 Oct 20 |
| 260 | -3:00 Arg AR%sT 1999 Oct 3 |
| 261 | -4:00 Arg AR%sT 2000 Mar 3 |
| 262 | -3:00 - ART |
| 263 | # |
| 264 | # Tucuman (TM) |
| 265 | Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 |
| 266 | -4:16:48 - CMT 1920 May |
| 267 | -4:00 - ART 1930 Dec |
| 268 | -4:00 Arg AR%sT 1969 Oct 5 |
| 269 | -3:00 Arg AR%sT 1991 Mar 3 |
| 270 | -4:00 - WART 1991 Oct 20 |
| 271 | -3:00 Arg AR%sT 1999 Oct 3 |
| 272 | -4:00 Arg AR%sT 2000 Mar 3 |
| 273 | -3:00 - ART 2004 Jun 1 |
| 274 | -4:00 - WART 2004 Jun 13 |
| 275 | -3:00 - ART |
| 276 | # |
| 277 | # La Rioja (LR) |
| 278 | Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 |
| 279 | -4:16:48 - CMT 1920 May |
| 280 | -4:00 - ART 1930 Dec |
| 281 | -4:00 Arg AR%sT 1969 Oct 5 |
| 282 | -3:00 Arg AR%sT 1991 Mar 1 |
| 283 | -4:00 - WART 1991 May 7 |
| 284 | -3:00 Arg AR%sT 1999 Oct 3 |
| 285 | -4:00 Arg AR%sT 2000 Mar 3 |
| 286 | -3:00 - ART 2004 Jun 1 |
| 287 | -4:00 - WART 2004 Jun 20 |
| 288 | -3:00 - ART |
| 289 | # |
| 290 | # San Juan (SJ) |
| 291 | Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 |
| 292 | -4:16:48 - CMT 1920 May |
| 293 | -4:00 - ART 1930 Dec |
| 294 | -4:00 Arg AR%sT 1969 Oct 5 |
| 295 | -3:00 Arg AR%sT 1991 Mar 1 |
| 296 | -4:00 - WART 1991 May 7 |
| 297 | -3:00 Arg AR%sT 1999 Oct 3 |
| 298 | -4:00 Arg AR%sT 2000 Mar 3 |
| 299 | -3:00 - ART 2004 May 31 |
| 300 | -4:00 - WART 2004 Jul 25 |
| 301 | -3:00 - ART |
| 302 | # |
| 303 | # Jujuy (JY) |
| 304 | Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 |
| 305 | -4:16:48 - CMT 1920 May |
| 306 | -4:00 - ART 1930 Dec |
| 307 | -4:00 Arg AR%sT 1969 Oct 5 |
| 308 | -3:00 Arg AR%sT 1990 Mar 4 |
| 309 | -4:00 - WART 1990 Oct 28 |
| 310 | -4:00 1:00 WARST 1991 Mar 17 |
| 311 | -4:00 - WART 1991 Oct 6 |
| 312 | -3:00 1:00 ARST 1992 |
| 313 | -3:00 Arg AR%sT 1999 Oct 3 |
| 314 | -4:00 Arg AR%sT 2000 Mar 3 |
| 315 | -3:00 - ART |
| 316 | # |
| 317 | # Catamarca (CT), Chubut (CH) |
| 318 | Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 |
| 319 | -4:16:48 - CMT 1920 May |
| 320 | -4:00 - ART 1930 Dec |
| 321 | -4:00 Arg AR%sT 1969 Oct 5 |
| 322 | -3:00 Arg AR%sT 1991 Mar 3 |
| 323 | -4:00 - WART 1991 Oct 20 |
| 324 | -3:00 Arg AR%sT 1999 Oct 3 |
| 325 | -4:00 Arg AR%sT 2000 Mar 3 |
| 326 | -3:00 - ART 2004 Jun 1 |
| 327 | -4:00 - WART 2004 Jun 20 |
| 328 | -3:00 - ART |
| 329 | # |
| 330 | # Mendoza (MZ) |
| 331 | Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 |
| 332 | -4:16:48 - CMT 1920 May |
| 333 | -4:00 - ART 1930 Dec |
| 334 | -4:00 Arg AR%sT 1969 Oct 5 |
| 335 | -3:00 Arg AR%sT 1990 Mar 4 |
| 336 | -4:00 - WART 1990 Oct 15 |
| 337 | -4:00 1:00 WARST 1991 Mar 1 |
| 338 | -4:00 - WART 1991 Oct 15 |
| 339 | -4:00 1:00 WARST 1992 Mar 1 |
| 340 | -4:00 - WART 1992 Oct 18 |
| 341 | -3:00 Arg AR%sT 1999 Oct 3 |
| 342 | -4:00 Arg AR%sT 2000 Mar 3 |
| 343 | -3:00 - ART 2004 May 23 |
| 344 | -4:00 - WART 2004 Sep 26 |
| 345 | -3:00 - ART |
| 346 | # |
| 347 | # Santa Cruz (SC) |
| 348 | Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 |
| 349 | -4:16:48 - CMT 1920 May # Cordoba Mean Time |
| 350 | -4:00 - ART 1930 Dec |
| 351 | -4:00 Arg AR%sT 1969 Oct 5 |
| 352 | -3:00 Arg AR%sT 1999 Oct 3 |
| 353 | -4:00 Arg AR%sT 2000 Mar 3 |
| 354 | -3:00 - ART 2004 Jun 1 |
| 355 | -4:00 - WART 2004 Jun 20 |
| 356 | -3:00 - ART |
| 357 | # |
| 358 | # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) |
| 359 | Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 |
| 360 | -4:16:48 - CMT 1920 May # Cordoba Mean Time |
| 361 | -4:00 - ART 1930 Dec |
| 362 | -4:00 Arg AR%sT 1969 Oct 5 |
| 363 | -3:00 Arg AR%sT 1999 Oct 3 |
| 364 | -4:00 Arg AR%sT 2000 Mar 3 |
| 365 | -3:00 - ART 2004 May 30 |
| 366 | -4:00 - WART 2004 Jun 20 |
| 367 | -3:00 - ART |
| 368 | |
| 369 | # Aruba |
| 370 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 371 | Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad |
| 372 | -4:30 - ANT 1965 # Netherlands Antilles Time |
| 373 | -4:00 - AST |
| 374 | |
| 375 | # Bolivia |
| 376 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 377 | Zone America/La_Paz -4:32:36 - LMT 1890 |
| 378 | -4:32:36 - CMT 1931 Oct 15 # Calamarca MT |
| 379 | -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST |
| 380 | -4:00 - BOT # Bolivia Time |
| 381 | |
| 382 | # Brazil |
| 383 | |
| 384 | # From Paul Eggert (1993-11-18): |
| 385 | # The mayor of Rio recently attempted to change the time zone rules |
| 386 | # just in his city, in order to leave more summer time for the tourist trade. |
| 387 | # The rule change lasted only part of the day; |
| 388 | # the federal government refused to follow the city's rules, and business |
| 389 | # was in a chaos, so the mayor backed down that afternoon. |
| 390 | |
| 391 | # From IATA SSIM (1996-02): |
| 392 | # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), |
| 393 | # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), |
| 394 | # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), |
| 395 | # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. |
| 396 | # [The last three states are new to this issue of the IATA SSIM.] |
| 397 | |
| 398 | # From Gwillim Law (1996-10-07): |
| 399 | # Geography, history (Tocantins was part of Goias until 1989), and other |
| 400 | # sources of time zone information lead me to believe that AL, SE, and TO were |
| 401 | # always in BR1, and so the only change was whether or not they observed DST.... |
| 402 | # The earliest issue of the SSIM I have is 2/91. Each issue from then until |
| 403 | # 9/95 says that DST is observed only in the ten states I quoted from 9/95, |
| 404 | # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 |
| 405 | # (UTC-4).... The other two time zones given for Brazil are BR3, which is |
| 406 | # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is |
| 407 | # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's |
| 408 | # become part of the state of Pernambuco). The boundary between BR1 and BR2 |
| 409 | # has never been clearly stated. They've simply been called East and West. |
| 410 | # However, some conclusions can be drawn from another IATA manual: the Airline |
| 411 | # Coding Directory, which lists close to 400 airports in Brazil. For each |
| 412 | # airport it gives a time zone which is coded to the SSIM. From that |
| 413 | # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), |
| 414 | # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do |
| 415 | # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. |
| 416 | |
| 417 | # From Marcos Tadeu (1998-09-27): |
| 418 | # <a href="http://pcdsh01.on.br/verao1.html"> |
| 419 | # Brazilian official page |
| 420 | # </a> |
| 421 | |
| 422 | # From Jesper Norgaard (2000-11-03): |
| 423 | # [For an official list of which regions in Brazil use which time zones, see:] |
| 424 | # http://pcdsh01.on.br/Fusbr.htm |
| 425 | # http://pcdsh01.on.br/Fusbrhv.htm |
| 426 | |
| 427 | # From Celso Doria via David Madeo (2002-10-09): |
| 428 | # The reason for the delay this year has to do with elections in Brazil. |
| 429 | # |
| 430 | # Unlike in the United States, elections in Brazil are 100% computerized and |
| 431 | # the results are known almost immediately. Yesterday, it was the first |
| 432 | # round of the elections when 115 million Brazilians voted for President, |
| 433 | # Governor, Senators, Federal Deputies, and State Deputies. Nobody is |
| 434 | # counting (or re-counting) votes anymore and we know there will be a second |
| 435 | # round for the Presidency and also for some Governors. The 2nd round will |
| 436 | # take place on October 27th. |
| 437 | # |
| 438 | # The reason why the DST will only begin November 3rd is that the thousands |
| 439 | # of electoral machines used cannot have their time changed, and since the |
| 440 | # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, |
| 441 | # the Government decided to postpone DST, instead of changing the Constitution |
| 442 | # (maybe, for the next elections, it will be possible to change the clock)... |
| 443 | |
| 444 | # From Rodrigo Severo (2004-10-04): |
| 445 | # It's just the biannual change made necessary by the much hyped, supposedly |
| 446 | # modern Brazilian eletronic voting machines which, apparently, can't deal |
| 447 | # with a time change between the first and the second rounds of the elections. |
| 448 | |
| 449 | # From Steffen Thorsen (2007-09-20): |
| 450 | # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: |
| 451 | # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 |
| 452 | |
| 453 | # From Paul Eggert (2002-10-10): |
| 454 | # The official decrees referenced below are mostly taken from |
| 455 | # <a href="http://pcdsh01.on.br/DecHV.html"> |
| 456 | # Decretos sobre o Horario de Verao no Brasil |
| 457 | # </a>. |
| 458 | |
| 459 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 460 | # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) |
| 461 | # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) |
| 462 | Rule Brazil 1931 only - Oct 3 11:00 1:00 S |
| 463 | Rule Brazil 1932 1933 - Apr 1 0:00 0 - |
| 464 | Rule Brazil 1932 only - Oct 3 0:00 1:00 S |
| 465 | # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) |
| 466 | # revoked DST. |
| 467 | # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) |
| 468 | # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) |
| 469 | Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S |
| 470 | Rule Brazil 1950 only - Apr 16 1:00 0 - |
| 471 | Rule Brazil 1951 1952 - Apr 1 0:00 0 - |
| 472 | # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) |
| 473 | Rule Brazil 1953 only - Mar 1 0:00 0 - |
| 474 | # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) |
| 475 | # revoked DST. |
| 476 | # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) |
| 477 | # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 |
| 478 | # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. |
| 479 | # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) |
| 480 | # extended the above decree to all of the national territory on 12-09. |
| 481 | Rule Brazil 1963 only - Dec 9 0:00 1:00 S |
| 482 | # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) |
| 483 | # extended summer time by one day to 1964-03-01 00:00 (start of school). |
| 484 | Rule Brazil 1964 only - Mar 1 0:00 0 - |
| 485 | # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) |
| 486 | Rule Brazil 1965 only - Jan 31 0:00 1:00 S |
| 487 | Rule Brazil 1965 only - Mar 31 0:00 0 - |
| 488 | # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) |
| 489 | Rule Brazil 1965 only - Dec 1 0:00 1:00 S |
| 490 | # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) |
| 491 | Rule Brazil 1966 1968 - Mar 1 0:00 0 - |
| 492 | Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S |
| 493 | # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) |
| 494 | # revoked DST. |
| 495 | # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) |
| 496 | Rule Brazil 1985 only - Nov 2 0:00 1:00 S |
| 497 | # Decree 92,310 (1986-01-21) |
| 498 | # Decree 92,463 (1986-03-13) |
| 499 | Rule Brazil 1986 only - Mar 15 0:00 0 - |
| 500 | # Decree 93,316 (1986-10-01) |
| 501 | Rule Brazil 1986 only - Oct 25 0:00 1:00 S |
| 502 | Rule Brazil 1987 only - Feb 14 0:00 0 - |
| 503 | # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) |
| 504 | Rule Brazil 1987 only - Oct 25 0:00 1:00 S |
| 505 | Rule Brazil 1988 only - Feb 7 0:00 0 - |
| 506 | # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) |
| 507 | # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) |
| 508 | Rule Brazil 1988 only - Oct 16 0:00 1:00 S |
| 509 | Rule Brazil 1989 only - Jan 29 0:00 0 - |
| 510 | # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) |
| 511 | # with the same exceptions |
| 512 | Rule Brazil 1989 only - Oct 15 0:00 1:00 S |
| 513 | Rule Brazil 1990 only - Feb 11 0:00 0 - |
| 514 | # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) |
| 515 | # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. |
| 516 | # Decree 99,629 (1990-10-19) adds BA, MT. |
| 517 | Rule Brazil 1990 only - Oct 21 0:00 1:00 S |
| 518 | Rule Brazil 1991 only - Feb 17 0:00 0 - |
| 519 | # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) |
| 520 | # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. |
| 521 | Rule Brazil 1991 only - Oct 20 0:00 1:00 S |
| 522 | Rule Brazil 1992 only - Feb 9 0:00 0 - |
| 523 | # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) |
| 524 | # adopted by same states. |
| 525 | Rule Brazil 1992 only - Oct 25 0:00 1:00 S |
| 526 | Rule Brazil 1993 only - Jan 31 0:00 0 - |
| 527 | # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) |
| 528 | # adopted by same states, plus AM. |
| 529 | # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; |
| 530 | # web page corrected 2004-01-07) adopted by same states, minus AM. |
| 531 | # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) |
| 532 | # adopted by same states, plus MT and TO. |
| 533 | # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) |
| 534 | # adds AL, SE. |
| 535 | Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S |
| 536 | Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - |
| 537 | Rule Brazil 1996 only - Feb 11 0:00 0 - |
| 538 | # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) |
| 539 | # adopted by same states, minus AL, SE. |
| 540 | Rule Brazil 1996 only - Oct 6 0:00 1:00 S |
| 541 | Rule Brazil 1997 only - Feb 16 0:00 0 - |
| 542 | # From Daniel C. Sobral (1998-02-12): |
| 543 | # In 1997, the DS began on October 6. The stated reason was that |
| 544 | # because international television networks ignored Brazil's policy on DS, |
| 545 | # they bought the wrong times on satellite for coverage of Pope's visit. |
| 546 | # This year, the ending date of DS was postponed to March 1 |
| 547 | # to help dealing with the shortages of electric power. |
| 548 | # |
| 549 | # Decree 2,317 (1997-09-04), adopted by same states. |
| 550 | Rule Brazil 1997 only - Oct 6 0:00 1:00 S |
| 551 | # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> |
| 552 | # (1998-02-10) |
| 553 | Rule Brazil 1998 only - Mar 1 0:00 0 - |
| 554 | # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) |
| 555 | # adopted by the same states as before. |
| 556 | Rule Brazil 1998 only - Oct 11 0:00 1:00 S |
| 557 | Rule Brazil 1999 only - Feb 21 0:00 0 - |
| 558 | # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> |
| 559 | # (1999-08-23) adopted by same states. |
| 560 | # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) |
| 561 | # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. |
| 562 | Rule Brazil 1999 only - Oct 3 0:00 1:00 S |
| 563 | Rule Brazil 2000 only - Feb 27 0:00 0 - |
| 564 | # Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) |
| 565 | # adopted by the same states as before. |
| 566 | # Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) |
| 567 | # repeals DST in PE and RR, effective 2000-10-15 00:00. |
| 568 | # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) |
| 569 | # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. |
| 570 | # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> |
| 571 | # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. |
| 572 | Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S |
| 573 | Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - |
| 574 | # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. |
| 575 | # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm"></a> |
| 576 | Rule Brazil 2002 only - Nov 3 0:00 1:00 S |
| 577 | # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. |
| 578 | # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm"></a> |
| 579 | Rule Brazil 2003 only - Oct 19 0:00 1:00 S |
| 580 | # Decree 5,223 (2004-10-01) reestablishes DST in MT. |
| 581 | # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm"></a> |
| 582 | Rule Brazil 2004 only - Nov 2 0:00 1:00 S |
| 583 | # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), |
| 584 | # adopted by the same states as before. |
| 585 | Rule Brazil 2005 only - Oct 16 0:00 1:00 S |
| 586 | # Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), |
| 587 | # adopted by the same states as before. |
| 588 | Rule Brazil 2006 only - Nov 5 0:00 1:00 S |
| 589 | Rule Brazil 2007 only - Feb 25 0:00 0 - |
| 590 | # (Decree number not yet known) |
| 591 | # http://www.brasil.gov.br/noticias/ultimas_noticias/horario_verao070920/ |
| 592 | # (2007-09-20) after a heads-up from Steffen Thorsen: |
| 593 | Rule Brazil 2007 max - Oct Sun>=8 0:00 1:00 S |
| 594 | Rule Brazil 2008 max - Feb Sun>=15 0:00 0 - |
| 595 | # The latest ruleset listed above says that the following states observe DST: |
| 596 | # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. |
| 597 | # For dates after mid-2008, the above rules with TO="max" are guesses |
| 598 | # and are quite possibly wrong, but are more likely than no DST at all. |
| 599 | |
| 600 | |
| 601 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 602 | # |
| 603 | # Fernando de Noronha (administratively part of PE) |
| 604 | Zone America/Noronha -2:09:40 - LMT 1914 |
| 605 | -2:00 Brazil FN%sT 1990 Sep 17 |
| 606 | -2:00 - FNT 1999 Sep 30 |
| 607 | -2:00 Brazil FN%sT 2000 Oct 15 |
| 608 | -2:00 - FNT 2001 Sep 13 |
| 609 | -2:00 Brazil FN%sT 2002 Oct 1 |
| 610 | -2:00 - FNT |
| 611 | # Other Atlantic islands have no permanent settlement. |
| 612 | # These include Trindade and Martin Vaz (administratively part of ES), |
| 613 | # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). |
| 614 | # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; |
| 615 | # it also included the Penedos. |
| 616 | # |
| 617 | # Amapa (AP), east Para (PA) |
| 618 | # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. |
| 619 | # The division between east and west Para is the river Xingu. |
| 620 | # In the north a very small part from the river Javary (now Jari I guess, |
| 621 | # the border with Amapa) to the Amazon, then to the Xingu. |
| 622 | Zone America/Belem -3:13:56 - LMT 1914 |
| 623 | -3:00 Brazil BR%sT 1988 Sep 12 |
| 624 | -3:00 - BRT |
| 625 | # |
| 626 | # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), |
| 627 | # Paraiba (PB) |
| 628 | Zone America/Fortaleza -2:34:00 - LMT 1914 |
| 629 | -3:00 Brazil BR%sT 1990 Sep 17 |
| 630 | -3:00 - BRT 1999 Sep 30 |
| 631 | -3:00 Brazil BR%sT 2000 Oct 22 |
| 632 | -3:00 - BRT 2001 Sep 13 |
| 633 | -3:00 Brazil BR%sT 2002 Oct 1 |
| 634 | -3:00 - BRT |
| 635 | # |
| 636 | # Pernambuco (PE) (except Atlantic islands) |
| 637 | Zone America/Recife -2:19:36 - LMT 1914 |
| 638 | -3:00 Brazil BR%sT 1990 Sep 17 |
| 639 | -3:00 - BRT 1999 Sep 30 |
| 640 | -3:00 Brazil BR%sT 2000 Oct 15 |
| 641 | -3:00 - BRT 2001 Sep 13 |
| 642 | -3:00 Brazil BR%sT 2002 Oct 1 |
| 643 | -3:00 - BRT |
| 644 | # |
| 645 | # Tocantins (TO) |
| 646 | Zone America/Araguaina -3:12:48 - LMT 1914 |
| 647 | -3:00 Brazil BR%sT 1990 Sep 17 |
| 648 | -3:00 - BRT 1995 Sep 14 |
| 649 | -3:00 Brazil BR%sT 2003 Sep 24 |
| 650 | -3:00 - BRT |
| 651 | # |
| 652 | # Alagoas (AL), Sergipe (SE) |
| 653 | Zone America/Maceio -2:22:52 - LMT 1914 |
| 654 | -3:00 Brazil BR%sT 1990 Sep 17 |
| 655 | -3:00 - BRT 1995 Oct 13 |
| 656 | -3:00 Brazil BR%sT 1996 Sep 4 |
| 657 | -3:00 - BRT 1999 Sep 30 |
| 658 | -3:00 Brazil BR%sT 2000 Oct 22 |
| 659 | -3:00 - BRT 2001 Sep 13 |
| 660 | -3:00 Brazil BR%sT 2002 Oct 1 |
| 661 | -3:00 - BRT |
| 662 | # |
| 663 | # Bahia (BA) |
| 664 | # There are too many Salvadors elsewhere, so use America/Bahia instead |
| 665 | # of America/Salvador. |
| 666 | Zone America/Bahia -2:34:04 - LMT 1914 |
| 667 | -3:00 Brazil BR%sT 2003 Sep 24 |
| 668 | -3:00 - BRT |
| 669 | # |
| 670 | # Goias (GO), Distrito Federal (DF), Minas Gerais (MG), |
| 671 | # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), |
| 672 | # Santa Catarina (SC), Rio Grande do Sul (RS) |
| 673 | Zone America/Sao_Paulo -3:06:28 - LMT 1914 |
| 674 | -3:00 Brazil BR%sT 1963 Oct 23 00:00 |
| 675 | -3:00 1:00 BRST 1964 |
| 676 | -3:00 Brazil BR%sT |
| 677 | # |
| 678 | # Mato Grosso do Sul (MS) |
| 679 | Zone America/Campo_Grande -3:38:28 - LMT 1914 |
| 680 | -4:00 Brazil AM%sT |
| 681 | # |
| 682 | # Mato Grosso (MT) |
| 683 | Zone America/Cuiaba -3:44:20 - LMT 1914 |
| 684 | -4:00 Brazil AM%sT 2003 Sep 24 |
| 685 | -4:00 - AMT 2004 Oct 1 |
| 686 | -4:00 Brazil AM%sT |
| 687 | # |
| 688 | # west Para (PA), Rondonia (RO) |
| 689 | # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. |
| 690 | Zone America/Porto_Velho -4:15:36 - LMT 1914 |
| 691 | -4:00 Brazil AM%sT 1988 Sep 12 |
| 692 | -4:00 - AMT |
| 693 | # |
| 694 | # Roraima (RR) |
| 695 | Zone America/Boa_Vista -4:02:40 - LMT 1914 |
| 696 | -4:00 Brazil AM%sT 1988 Sep 12 |
| 697 | -4:00 - AMT 1999 Sep 30 |
| 698 | -4:00 Brazil AM%sT 2000 Oct 15 |
| 699 | -4:00 - AMT |
| 700 | # |
| 701 | # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto |
| 702 | # The great circle line from Tabatinga to Porto Acre divides |
| 703 | # east from west Amazonas. |
| 704 | Zone America/Manaus -4:00:04 - LMT 1914 |
| 705 | -4:00 Brazil AM%sT 1988 Sep 12 |
| 706 | -4:00 - AMT 1993 Sep 28 |
| 707 | -4:00 Brazil AM%sT 1994 Sep 22 |
| 708 | -4:00 - AMT |
| 709 | # |
| 710 | # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, |
| 711 | # Eirunepe, Envira, Ipixuna |
| 712 | Zone America/Eirunepe -4:39:28 - LMT 1914 |
| 713 | -5:00 Brazil AC%sT 1988 Sep 12 |
| 714 | -5:00 - ACT 1993 Sep 28 |
| 715 | -5:00 Brazil AC%sT 1994 Sep 22 |
| 716 | -5:00 - ACT |
| 717 | # |
| 718 | # Acre (AC) |
| 719 | Zone America/Rio_Branco -4:31:12 - LMT 1914 |
| 720 | -5:00 Brazil AC%sT 1988 Sep 12 |
| 721 | -5:00 - ACT |
| 722 | |
| 723 | |
| 724 | # Chile |
| 725 | |
| 726 | # From Eduardo Krell (1995-10-19): |
| 727 | # The law says to switch to DST at midnight [24:00] on the second SATURDAY |
| 728 | # of October.... The law is the same for March and October. |
| 729 | # (1998-09-29): |
| 730 | # Because of the drought this year, the government decided to go into |
| 731 | # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... |
| 732 | # (unless there's another dry season next year, I guess). |
| 733 | |
| 734 | # From Julio I. Pacheco Troncoso (1999-03-18): |
| 735 | # Because of the same drought, the government decided to end DST later, |
| 736 | # on April 3, (one-time change). |
| 737 | |
| 738 | # From Oscar van Vlijmen (2006-10-08): |
| 739 | # http://www.horaoficial.cl/cambio.htm |
| 740 | |
| 741 | # From Jesper Norgaard Welen (2006-10-08): |
| 742 | # I think that there are some obvious mistakes in the suggested link |
| 743 | # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 |
| 744 | # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 |
| 745 | # (they should have been 1990-09-15 and 1990-09-16 respectively), but |
| 746 | # anyhow it clears up some doubts too. |
| 747 | |
| 748 | # From Paul Eggert (2006-12-27): |
| 749 | # The following data for Chile and America/Santiago are from |
| 750 | # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by |
| 751 | # Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks |
| 752 | # & Pottenger, except with DST transitions after 1932 cloned from |
| 753 | # America/Santiago. The pre-1980 Pacific/Easter data are dubious, |
| 754 | # but we have no other source. |
| 755 | |
| 756 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 757 | Rule Chile 1927 1932 - Sep 1 0:00 1:00 S |
| 758 | Rule Chile 1928 1932 - Apr 1 0:00 0 - |
| 759 | Rule Chile 1942 only - Jun 1 4:00u 0 - |
| 760 | Rule Chile 1942 only - Aug 1 5:00u 1:00 S |
| 761 | Rule Chile 1946 only - Jul 15 4:00u 1:00 S |
| 762 | Rule Chile 1946 only - Sep 1 3:00u 0:00 - |
| 763 | Rule Chile 1947 only - Apr 1 4:00u 0 - |
| 764 | Rule Chile 1968 only - Nov 3 4:00u 1:00 S |
| 765 | Rule Chile 1969 only - Mar 30 3:00u 0 - |
| 766 | Rule Chile 1969 only - Nov 23 4:00u 1:00 S |
| 767 | Rule Chile 1970 only - Mar 29 3:00u 0 - |
| 768 | Rule Chile 1971 only - Mar 14 3:00u 0 - |
| 769 | Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S |
| 770 | Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - |
| 771 | Rule Chile 1973 only - Sep 30 4:00u 1:00 S |
| 772 | Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S |
| 773 | Rule Chile 1987 only - Apr 12 3:00u 0 - |
| 774 | Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - |
| 775 | Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S |
| 776 | Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S |
| 777 | Rule Chile 1990 only - Mar 18 3:00u 0 - |
| 778 | Rule Chile 1990 only - Sep 16 4:00u 1:00 S |
| 779 | Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - |
| 780 | Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S |
| 781 | Rule Chile 1997 only - Mar 30 3:00u 0 - |
| 782 | Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - |
| 783 | Rule Chile 1998 only - Sep 27 4:00u 1:00 S |
| 784 | Rule Chile 1999 only - Apr 4 3:00u 0 - |
| 785 | Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S |
| 786 | Rule Chile 2000 max - Mar Sun>=9 3:00u 0 - |
| 787 | # IATA SSIM anomalies: (1992-02) says 1992-03-14; |
| 788 | # (1996-09) says 1998-03-08. Ignore these. |
| 789 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 790 | Zone America/Santiago -4:42:46 - LMT 1890 |
| 791 | -4:42:46 - SMT 1910 # Santiago Mean Time |
| 792 | -5:00 - CLT 1916 Jul 1 # Chile Time |
| 793 | -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time |
| 794 | -4:00 - CLT 1919 Jul 1 # Chile Time |
| 795 | -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time |
| 796 | -5:00 Chile CL%sT 1947 May 22 # Chile Time |
| 797 | -4:00 Chile CL%sT |
| 798 | Zone Pacific/Easter -7:17:44 - LMT 1890 |
| 799 | -7:17:28 - EMT 1932 Sep # Easter Mean Time |
| 800 | -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time |
| 801 | -6:00 Chile EAS%sT |
| 802 | # |
| 803 | # Sala y Gomez Island is like Pacific/Easter. |
| 804 | # Other Chilean locations, including Juan Fernandez Is, San Ambrosio, |
| 805 | # San Felix, and Antarctic bases, are like America/Santiago. |
| 806 | |
| 807 | # Colombia |
| 808 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 809 | Rule CO 1992 only - May 3 0:00 1:00 S |
| 810 | Rule CO 1993 only - Apr 4 0:00 0 - |
| 811 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 812 | Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 |
| 813 | -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time |
| 814 | -5:00 CO CO%sT # Colombia Time |
| 815 | # Malpelo, Providencia, San Andres |
| 816 | # no information; probably like America/Bogota |
| 817 | |
| 818 | # Curacao |
| 819 | # |
| 820 | # From Paul Eggert (2006-03-22): |
| 821 | # Shanks & Pottenger say that The Bottom and Philipsburg have been at |
| 822 | # -4:00 since standard time was introduced on 1912-03-02; and that |
| 823 | # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from |
| 824 | # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say |
| 825 | # Saba Island has been like Curacao. |
| 826 | # This all predates our 1970 cutoff, though. |
| 827 | # |
| 828 | # By July 2007 Curacao and St Maarten are planned to become |
| 829 | # associated states within the Netherlands, much like Aruba; |
| 830 | # Bonaire, Saba and St Eustatius would become directly part of the |
| 831 | # Netherlands as Kingdom Islands. This won't affect their time zones |
| 832 | # though, as far as we know. |
| 833 | # |
| 834 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 835 | Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad |
| 836 | -4:30 - ANT 1965 # Netherlands Antilles Time |
| 837 | -4:00 - AST |
| 838 | |
| 839 | # Ecuador |
| 840 | # |
| 841 | # From Paul Eggert (2007-03-04): |
| 842 | # Apparently Ecuador had a failed experiment with DST in 1992. |
| 843 | # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and |
| 844 | # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both |
| 845 | # talk about "hora Sixto". Leave this alone for now, as we have no data. |
| 846 | # |
| 847 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 848 | Zone America/Guayaquil -5:19:20 - LMT 1890 |
| 849 | -5:14:00 - QMT 1931 # Quito Mean Time |
| 850 | -5:00 - ECT # Ecuador Time |
| 851 | Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno |
| 852 | -5:00 - ECT 1986 |
| 853 | -6:00 - GALT # Galapagos Time |
| 854 | |
| 855 | # Falklands |
| 856 | |
| 857 | # From Paul Eggert (2006-03-22): |
| 858 | # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except |
| 859 | # the IATA gives 1996-09-08. Go with Shanks & Pottenger. |
| 860 | |
| 861 | # From Falkland Islands Government Office, London (2001-01-22) |
| 862 | # via Jesper Norgaard: |
| 863 | # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 |
| 864 | # April 2001 and advance one hour to summer time at 2 am on Sunday 2 |
| 865 | # September. It is anticipated that the clocks will revert back at 2 |
| 866 | # am on Sunday 21 April 2002 and advance to summer time at 2 am on |
| 867 | # Sunday 1 September. |
| 868 | |
| 869 | # From Rives McDow (2001-02-13): |
| 870 | # |
| 871 | # I have communicated several times with people there, and the last |
| 872 | # time I had communications that was helpful was in 1998. Here is |
| 873 | # what was said then: |
| 874 | # |
| 875 | # "The general rule was that Stanley used daylight saving and the Camp |
| 876 | # did not. However for various reasons many people in the Camp have |
| 877 | # started to use daylight saving (known locally as 'Stanley Time') |
| 878 | # There is no rule as to who uses daylight saving - it is a matter of |
| 879 | # personal choice and so it is impossible to draw a map showing who |
| 880 | # uses it and who does not. Any list would be out of date as soon as |
| 881 | # it was produced. This year daylight saving ended on April 18/19th |
| 882 | # and started again on September 12/13th. I do not know what the rule |
| 883 | # is, but can find out if you like. We do not change at the same time |
| 884 | # as UK or Chile." |
| 885 | # |
| 886 | # I did have in my notes that the rule was "Second Saturday in Sep at |
| 887 | # 0:00 until third Saturday in Apr at 0:00". I think that this does |
| 888 | # not agree in some cases with Shanks; is this true? |
| 889 | # |
| 890 | # Also, there is no mention in the list that some areas in the |
| 891 | # Falklands do not use DST. I have found in my communications there |
| 892 | # that these areas are on the western half of East Falkland and all of |
| 893 | # West Falkland. Stanley is the only place that consistently observes |
| 894 | # DST. Again, as in other places in the world, the farmers don't like |
| 895 | # it. West Falkland is almost entirely sheep farmers. |
| 896 | # |
| 897 | # I know one lady there that keeps a list of which farm keeps DST and |
| 898 | # which doesn't each year. She runs a shop in Stanley, and says that |
| 899 | # the list changes each year. She uses it to communicate to her |
| 900 | # customers, catching them when they are home for lunch or dinner. |
| 901 | |
| 902 | # From Paul Eggert (2001-03-05): |
| 903 | # For now, we'll just record the time in Stanley, since we have no |
| 904 | # better info. |
| 905 | |
| 906 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 907 | Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S |
| 908 | Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - |
| 909 | Rule Falk 1939 only - Oct 1 0:00 1:00 S |
| 910 | Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S |
| 911 | Rule Falk 1943 only - Jan 1 0:00 0 - |
| 912 | Rule Falk 1983 only - Sep lastSun 0:00 1:00 S |
| 913 | Rule Falk 1984 1985 - Apr lastSun 0:00 0 - |
| 914 | Rule Falk 1984 only - Sep 16 0:00 1:00 S |
| 915 | Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S |
| 916 | Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - |
| 917 | Rule Falk 2001 max - Apr Sun>=15 2:00 0 - |
| 918 | Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S |
| 919 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 920 | Zone Atlantic/Stanley -3:51:24 - LMT 1890 |
| 921 | -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time |
| 922 | -4:00 Falk FK%sT 1983 May # Falkland Is Time |
| 923 | -3:00 Falk FK%sT 1985 Sep 15 |
| 924 | -4:00 Falk FK%sT |
| 925 | |
| 926 | # French Guiana |
| 927 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 928 | Zone America/Cayenne -3:29:20 - LMT 1911 Jul |
| 929 | -4:00 - GFT 1967 Oct # French Guiana Time |
| 930 | -3:00 - GFT |
| 931 | |
| 932 | # Guyana |
| 933 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 934 | Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown |
| 935 | -3:45 - GBGT 1966 May 26 # Br Guiana Time |
| 936 | -3:45 - GYT 1975 Jul 31 # Guyana Time |
| 937 | -3:00 - GYT 1991 |
| 938 | # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. |
| 939 | -4:00 - GYT |
| 940 | |
| 941 | # Paraguay |
| 942 | # From Paul Eggert (2006-03-22): |
| 943 | # Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, |
| 944 | # and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 |
| 945 | # editions of Shanks, and with the IATA, who say transitions occur at 00:00. |
| 946 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 947 | Rule Para 1975 1988 - Oct 1 0:00 1:00 S |
| 948 | Rule Para 1975 1978 - Mar 1 0:00 0 - |
| 949 | Rule Para 1979 1991 - Apr 1 0:00 0 - |
| 950 | Rule Para 1989 only - Oct 22 0:00 1:00 S |
| 951 | Rule Para 1990 only - Oct 1 0:00 1:00 S |
| 952 | Rule Para 1991 only - Oct 6 0:00 1:00 S |
| 953 | Rule Para 1992 only - Mar 1 0:00 0 - |
| 954 | Rule Para 1992 only - Oct 5 0:00 1:00 S |
| 955 | Rule Para 1993 only - Mar 31 0:00 0 - |
| 956 | Rule Para 1993 1995 - Oct 1 0:00 1:00 S |
| 957 | Rule Para 1994 1995 - Feb lastSun 0:00 0 - |
| 958 | Rule Para 1996 only - Mar 1 0:00 0 - |
| 959 | # IATA SSIM (2000-02) says 1999-10-10; ignore this for now. |
| 960 | # From Steffen Thorsen (2000-10-02): |
| 961 | # I have three independent reports that Paraguay changed to DST this Sunday |
| 962 | # (10-01). |
| 963 | # |
| 964 | # Translated by Gwillim Law (2001-02-27) from |
| 965 | # <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> |
| 966 | # Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) |
| 967 | # </a>: |
| 968 | # Starting at 0:00 today, the clock will be set forward 60 minutes, in |
| 969 | # fulfillment of Decree No. 7,273 of the Executive Power.... The time change |
| 970 | # system has been operating for several years. Formerly there was a separate |
| 971 | # decree each year; the new law has the same effect, but permanently. Every |
| 972 | # year, the time will change on the first Sunday of October; likewise, the |
| 973 | # clock will be set back on the first Sunday of March. |
| 974 | # |
| 975 | Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S |
| 976 | # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. |
| 977 | Rule Para 1997 only - Feb lastSun 0:00 0 - |
| 978 | # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but |
| 979 | # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). |
| 980 | Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - |
| 981 | # From Rives McDow (2002-02-28): |
| 982 | # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the |
| 983 | # dst method to be from the first Sunday in September to the first Sunday in |
| 984 | # April. |
| 985 | Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - |
| 986 | Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S |
| 987 | # |
| 988 | # From Jesper Norgaard Welen (2005-01-02): |
| 989 | # There are several sources that claim that Paraguay made |
| 990 | # a timezone rule change in autumn 2004. |
| 991 | # From Steffen Thorsen (2005-01-05): |
| 992 | # Decree 1,867 (2004-03-05) |
| 993 | # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) |
| 994 | # <http://www.presidencia.gov.py/decretos/D1867.pdf> |
| 995 | Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S |
| 996 | Rule Para 2005 max - Mar Sun>=8 0:00 0 - |
| 997 | |
| 998 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 999 | Zone America/Asuncion -3:50:40 - LMT 1890 |
| 1000 | -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time |
| 1001 | -4:00 - PYT 1972 Oct # Paraguay Time |
| 1002 | -3:00 - PYT 1974 Apr |
| 1003 | -4:00 Para PY%sT |
| 1004 | |
| 1005 | # Peru |
| 1006 | # |
| 1007 | # <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> |
| 1008 | # From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> |
| 1009 | # When we were in Peru in 1985-1986, they apparently switched over |
| 1010 | # sometime between December 29 and January 3 while we were on the Amazon. |
| 1011 | # |
| 1012 | # From Paul Eggert (2006-03-22): |
| 1013 | # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. |
| 1014 | |
| 1015 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 1016 | Rule Peru 1938 only - Jan 1 0:00 1:00 S |
| 1017 | Rule Peru 1938 only - Apr 1 0:00 0 - |
| 1018 | Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S |
| 1019 | Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - |
| 1020 | Rule Peru 1986 1987 - Jan 1 0:00 1:00 S |
| 1021 | Rule Peru 1986 1987 - Apr 1 0:00 0 - |
| 1022 | Rule Peru 1990 only - Jan 1 0:00 1:00 S |
| 1023 | Rule Peru 1990 only - Apr 1 0:00 0 - |
| 1024 | # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. |
| 1025 | Rule Peru 1994 only - Jan 1 0:00 1:00 S |
| 1026 | Rule Peru 1994 only - Apr 1 0:00 0 - |
| 1027 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 1028 | Zone America/Lima -5:08:12 - LMT 1890 |
| 1029 | -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? |
| 1030 | -5:00 Peru PE%sT # Peru Time |
| 1031 | |
| 1032 | # South Georgia |
| 1033 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 1034 | Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken |
| 1035 | -2:00 - GST # South Georgia Time |
| 1036 | |
| 1037 | # South Sandwich Is |
| 1038 | # uninhabited; scientific personnel have wintered |
| 1039 | |
| 1040 | # Suriname |
| 1041 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 1042 | Zone America/Paramaribo -3:40:40 - LMT 1911 |
| 1043 | -3:40:52 - PMT 1935 # Paramaribo Mean Time |
| 1044 | -3:40:36 - PMT 1945 Oct # The capital moved? |
| 1045 | -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time |
| 1046 | -3:30 - SRT 1984 Oct # Suriname Time |
| 1047 | -3:00 - SRT |
| 1048 | |
| 1049 | # Trinidad and Tobago |
| 1050 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 1051 | Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 |
| 1052 | -4:00 - AST |
| 1053 | |
| 1054 | # Uruguay |
| 1055 | # From Paul Eggert (1993-11-18): |
| 1056 | # Uruguay wins the prize for the strangest peacetime manipulation of the rules. |
| 1057 | # From Shanks & Pottenger: |
| 1058 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| 1059 | # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. |
| 1060 | Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS |
| 1061 | Rule Uruguay 1924 1926 - Apr 1 0:00 0 - |
| 1062 | Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS |
| 1063 | Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS |
| 1064 | # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. |
| 1065 | Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - |
| 1066 | Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS |
| 1067 | Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - |
| 1068 | # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. |
| 1069 | Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS |
| 1070 | # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, |
| 1071 | # and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. |
| 1072 | Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS |
| 1073 | Rule Uruguay 1942 only - Jan 1 0:00 0 - |
| 1074 | Rule Uruguay 1942 only - Dec 14 0:00 1:00 S |
| 1075 | Rule Uruguay 1943 only - Mar 14 0:00 0 - |
| 1076 | Rule Uruguay 1959 only - May 24 0:00 1:00 S |
| 1077 | Rule Uruguay 1959 only - Nov 15 0:00 0 - |
| 1078 | Rule Uruguay 1960 only - Jan 17 0:00 1:00 S |
| 1079 | Rule Uruguay 1960 only - Mar 6 0:00 0 - |
| 1080 | Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S |
| 1081 | Rule Uruguay 1965 only - Sep 26 0:00 0 - |
| 1082 | Rule Uruguay 1966 1967 - Oct 31 0:00 0 - |
| 1083 | Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS |
| 1084 | Rule Uruguay 1968 1970 - Dec 2 0:00 0 - |
| 1085 | Rule Uruguay 1972 only - Apr 24 0:00 1:00 S |
| 1086 | Rule Uruguay 1972 only - Aug 15 0:00 0 - |
| 1087 | Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS |
| 1088 | Rule Uruguay 1974 only - Dec 22 0:00 1:00 S |
| 1089 | Rule Uruguay 1976 only - Oct 1 0:00 0 - |
| 1090 | Rule Uruguay 1977 only - Dec 4 0:00 1:00 S |
| 1091 | Rule Uruguay 1978 only - Apr 1 0:00 0 - |
| 1092 | Rule Uruguay 1979 only - Oct 1 0:00 1:00 S |
| 1093 | Rule Uruguay 1980 only - May 1 0:00 0 - |
| 1094 | Rule Uruguay 1987 only - Dec 14 0:00 1:00 S |
| 1095 | Rule Uruguay 1988 only - Mar 14 0:00 0 - |
| 1096 | Rule Uruguay 1988 only - Dec 11 0:00 1:00 S |
| 1097 | Rule Uruguay 1989 only - Mar 12 0:00 0 - |
| 1098 | Rule Uruguay 1989 only - Oct 29 0:00 1:00 S |
| 1099 | # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, |
| 1100 | # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. |
| 1101 | Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - |
| 1102 | Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S |
| 1103 | Rule Uruguay 1992 only - Oct 18 0:00 1:00 S |
| 1104 | Rule Uruguay 1993 only - Feb 28 0:00 0 - |
| 1105 | # From Eduardo Cota (2004-09-20): |
| 1106 | # The uruguayan government has decreed a change in the local time.... |
| 1107 | # http://www.presidencia.gub.uy/decretos/2004091502.htm |
| 1108 | Rule Uruguay 2004 only - Sep 19 0:00 1:00 S |
| 1109 | # From Steffen Thorsen (2005-03-11): |
| 1110 | # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to |
| 1111 | # save energy ... it was postponed two weeks.... |
| 1112 | # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm |
| 1113 | Rule Uruguay 2005 only - Mar 27 2:00 0 - |
| 1114 | # From Eduardo Cota (2005-09-27): |
| 1115 | # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF |
| 1116 | # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at |
| 1117 | # 02:00 local time, official time in Uruguay will be at GMT -2. |
| 1118 | Rule Uruguay 2005 only - Oct 9 2:00 1:00 S |
| 1119 | Rule Uruguay 2006 only - Mar 12 2:00 0 - |
| 1120 | # From Jesper Norgaard Welen (2006-09-06): |
| 1121 | # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF |
| 1122 | Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S |
| 1123 | Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - |
| 1124 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 1125 | Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 |
| 1126 | -3:44:44 - MMT 1920 May 1 # Montevideo MT |
| 1127 | -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time |
| 1128 | -3:00 Uruguay UY%sT |
| 1129 | |
| 1130 | # Venezuela |
| 1131 | # |
| 1132 | # From Kiraz Janicke (2007-09-25), in |
| 1133 | # http://www.venezuelanalysis.com/analysis/2645: |
| 1134 | # The proposal ... involves turning the clock back half an hour from |
| 1135 | # +4.00 Greenwich Mean Time (GMT), to +4.30GMT, the time zone |
| 1136 | # Venezuela had until December 31, 1964, when the current time zone |
| 1137 | # was adopted. The change was due to take place on September 17 and |
| 1138 | # then on September 24, but has since been postponed until December |
| 1139 | # 31, to allow for compliance with international organizations, such |
| 1140 | # as the International Office of Weights and Measures. |
| 1141 | |
| 1142 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| 1143 | Zone America/Caracas -4:27:44 - LMT 1890 |
| 1144 | -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? |
| 1145 | -4:30 - VET 1965 # Venezuela Time |
| 1146 | -4:00 - VET 2008 |
| 1147 | -4:30 - VET |