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1 # @(#)southamerica 8.6 |
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2 # <pre> |
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3 |
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4 # This data is by no means authoritative; if you think you know better, |
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5 # go ahead and edit the file (and please send any changes to |
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6 # tz@elsie.nci.nih.gov for general use in the future). |
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7 |
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8 # From Paul Eggert (2006-03-22): |
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9 # A good source for time zone historical data outside the U.S. is |
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10 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
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11 # San Diego: ACS Publications, Inc. (2003). |
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12 # |
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13 # Gwillim Law writes that a good source |
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14 # for recent time zone data is the International Air Transport |
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15 # Association's Standard Schedules Information Manual (IATA SSIM), |
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16 # published semiannually. Law sent in several helpful summaries |
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17 # of the IATA's data after 1990. |
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18 # |
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19 # Except where otherwise noted, Shanks & Pottenger is the source for |
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20 # entries through 1990, and IATA SSIM is the source for entries afterwards. |
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21 # |
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22 # Earlier editions of these tables used the North American style (e.g. ARST and |
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23 # ARDT for Argentine Standard and Daylight Time), but the following quote |
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24 # suggests that it's better to use European style (e.g. ART and ARST). |
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25 # I suggest the use of _Summer time_ instead of the more cumbersome |
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26 # _daylight-saving time_. _Summer time_ seems to be in general use |
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27 # in Europe and South America. |
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28 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in |
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29 # H L Mencken, _The American Language: Supplement I_ (1960), p 466 |
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30 # |
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31 # Earlier editions of these tables also used the North American style |
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32 # for time zones in Brazil, but this was incorrect, as Brazilians say |
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33 # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in |
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34 # the railroad sector, writes (1999-07-06): |
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35 # The subject of time zones is currently a matter of discussion/debate in |
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36 # Brazil. Let's say that "the Brasilia time" is considered the |
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37 # "official time" because Brasilia is the capital city. |
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38 # The other three time zones are called "Brasilia time "minus one" or |
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39 # "plus one" or "plus two". As far as I know there is no such |
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40 # name/designation as "Eastern Time" or "Central Time". |
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41 # So I invented the following (English-language) abbreviations for now. |
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42 # Corrections are welcome! |
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43 # std dst |
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44 # -2:00 FNT FNST Fernando de Noronha |
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45 # -3:00 BRT BRST Brasilia |
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46 # -4:00 AMT AMST Amazon |
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47 # -5:00 ACT ACST Acre |
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48 |
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49 ############################################################################### |
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50 |
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51 ############################################################################### |
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52 |
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53 # Argentina |
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54 |
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55 # From Bob Devine (1988-01-28): |
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56 # Argentina: first Sunday in October to first Sunday in April since 1976. |
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57 # Double Summer time from 1969 to 1974. Switches at midnight. |
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58 |
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59 # From U. S. Naval Observatory (1988-01-199): |
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60 # ARGENTINA 3 H BEHIND UTC |
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61 |
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62 # From Hernan G. Otero (1995-06-26): |
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63 # I am sending modifications to the Argentine time zone table... |
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64 # AR was chosen because they are the ISO letters that represent Argentina. |
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65 |
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66 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
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67 Rule Arg 1930 only - Dec 1 0:00 1:00 S |
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68 Rule Arg 1931 only - Apr 1 0:00 0 - |
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69 Rule Arg 1931 only - Oct 15 0:00 1:00 S |
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70 Rule Arg 1932 1940 - Mar 1 0:00 0 - |
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71 Rule Arg 1932 1939 - Nov 1 0:00 1:00 S |
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72 Rule Arg 1940 only - Jul 1 0:00 1:00 S |
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73 Rule Arg 1941 only - Jun 15 0:00 0 - |
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74 Rule Arg 1941 only - Oct 15 0:00 1:00 S |
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75 Rule Arg 1943 only - Aug 1 0:00 0 - |
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76 Rule Arg 1943 only - Oct 15 0:00 1:00 S |
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77 Rule Arg 1946 only - Mar 1 0:00 0 - |
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78 Rule Arg 1946 only - Oct 1 0:00 1:00 S |
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79 Rule Arg 1963 only - Oct 1 0:00 0 - |
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80 Rule Arg 1963 only - Dec 15 0:00 1:00 S |
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81 Rule Arg 1964 1966 - Mar 1 0:00 0 - |
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82 Rule Arg 1964 1966 - Oct 15 0:00 1:00 S |
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83 Rule Arg 1967 only - Apr 2 0:00 0 - |
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84 Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S |
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85 Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - |
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86 Rule Arg 1974 only - Jan 23 0:00 1:00 S |
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87 Rule Arg 1974 only - May 1 0:00 0 - |
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88 Rule Arg 1988 only - Dec 1 0:00 1:00 S |
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89 # |
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90 # From Hernan G. Otero (1995-06-26): |
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91 # These corrections were contributed by InterSoft Argentina S.A., |
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92 # obtaining the data from the: |
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93 # Talleres de Hidrografia Naval Argentina |
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94 # (Argentine Naval Hydrography Institute) |
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95 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - |
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96 Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S |
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97 # |
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98 # From Hernan G. Otero (1995-06-26): |
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99 # From this moment on, the law that mandated the daylight saving |
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100 # time corrections was derogated and no more modifications |
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101 # to the time zones (for daylight saving) are now made. |
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102 # |
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103 # From Rives McDow (2000-01-10): |
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104 # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, |
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105 # which did not result in the switch of a time zone, as they stayed 9 hours |
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106 # from the International Date Line. |
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107 Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S |
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108 Rule Arg 2000 only - Mar Sun>=1 0:00 0 - |
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109 # |
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110 # From Peter Gradelski via Steffen Thorsen (2000-03-01): |
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111 # We just checked with our Sao Paulo office and they say the government of |
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112 # Argentina decided not to become one of the countries that go on or off DST. |
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113 # So Buenos Aires should be -3 hours from GMT at all times. |
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114 # |
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115 # From Fabian L. Arce Jofre (2000-04-04): |
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116 # The law that claimed DST for Argentina was derogated by President Fernando |
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117 # de la Rua on March 2, 2000, because it would make people spend more energy |
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118 # in the winter time, rather than less. The change took effect on March 3. |
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119 # |
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120 # From Mariano Absatz (2001-06-06): |
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121 # one of the major newspapers here in Argentina said that the 1999 |
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122 # Timezone Law (which never was effectively applied) will (would?) be |
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123 # in effect.... The article is at |
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124 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm |
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125 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted |
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126 # 1999-09-17, and published 1999-09-21. The official publication is at: |
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127 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF |
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128 # Regretfully, you have to subscribe (and pay) for the on-line version.... |
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129 # |
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130 # (2001-06-12): |
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131 # the timezone for Argentina will not change next Sunday. |
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132 # Apparently it will do so on Sunday 24th.... |
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133 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm |
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134 # |
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135 # (2001-06-25): |
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136 # Last Friday (yes, the last working day before the date of the change), the |
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137 # Senate annulled the 1999 law that introduced the changes later postponed. |
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138 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm |
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139 # It remains the vote of the Deputies..., but it will be the same.... |
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140 # This kind of things had always been done this way in Argentina. |
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141 # We are still -03:00 all year round in all of the country. |
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142 # |
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143 # From Mariano Absatz (2004-05-21): |
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144 # Today it was officially published that the Province of Mendoza is changing |
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145 # its timezone this winter... starting tomorrow night.... |
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146 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf |
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147 # From Paul Eggert (2004-05-24): |
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148 # It's Law No. 7,210. This change is due to a public power emergency, so for |
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149 # now we'll assume it's for this year only. |
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150 # |
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151 # From Paul Eggert (2006-03-22): |
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152 # <a href="http://www.spicasc.net/horvera.html"> |
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153 # Hora de verano para la Republica Argentina (2003-06-08) |
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154 # </a> says that standard time in Argentina from 1894-10-31 |
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155 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value |
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156 # over Shanks & Pottenger. |
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157 # |
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158 # From Mariano Absatz (2004-06-05): |
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159 # These media articles from a major newspaper mostly cover the current state: |
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160 # http://www.lanacion.com.ar/04/05/27/de_604825.asp |
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161 # http://www.lanacion.com.ar/04/05/28/de_605203.asp |
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162 # |
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163 # The following eight (8) provinces pulled clocks back to UTC-04:00 at |
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164 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). |
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165 # Apparently, all nine provinces would go back to UTC-03:00 at the same |
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166 # time in October 17th. |
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167 # |
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168 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, |
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169 # Tierra del Fuego, Tucuman. |
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170 # |
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171 # From Mariano Absatz (2004-06-14): |
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172 # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 |
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173 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's |
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174 # annoyance with the change is much higher than the power savings obtained.... |
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175 # |
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176 # From Gwillim Law (2004-06-14): |
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177 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... |
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178 # "The time change in Tierra del Fuego was a conflicted decision from |
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179 # the start. The government had decreed that the measure would take |
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180 # effect on June 1, but a normative error forced the new time to begin |
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181 # three days earlier, from a Saturday to a Sunday.... |
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182 # Our understanding was that the change was originally scheduled to take place |
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183 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other |
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184 # provinces). Sunday was May 30, only two days earlier. So the article |
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185 # contains a contradiction. I would give more credence to the Saturday/Sunday |
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186 # date than the "three days earlier" phrase, and conclude that Tierra del |
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187 # Fuego set its clocks back at 2004-05-30 00:00. |
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188 # |
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189 # From Steffen Thorsen (2004-10-05): |
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190 # The previous law 7210 which changed the province of Mendoza's time zone |
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191 # back in May have been modified slightly in a new law 7277, which set the |
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192 # new end date to 2004-09-26 (original date was 2004-10-17). |
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193 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf |
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194 # |
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195 # From Mariano Absatz (2004-10-05): |
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196 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between |
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197 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 |
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198 # at midnight between Saturday, July 24th and Sunday, July 25th.... |
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199 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html |
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200 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html |
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201 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html |
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202 |
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203 # Unless otherwise specified, data are from Shanks & Pottenger through 1992, |
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204 # from the IATA otherwise. As noted below, Shanks & Pottenger say that |
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205 # America/Cordoba split into 6 subregions during 1991/1992, but we |
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206 # haven't verified this yet so for now we'll keep it a single region. |
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207 # |
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208 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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209 # |
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210 # Buenos Aires (BA), Capital Federal (CF), |
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211 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 |
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212 -4:16:48 - CMT 1920 May # Cordoba Mean Time |
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213 -4:00 - ART 1930 Dec |
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214 -4:00 Arg AR%sT 1969 Oct 5 |
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215 -3:00 Arg AR%sT 1999 Oct 3 |
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216 -4:00 Arg AR%sT 2000 Mar 3 |
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217 -3:00 - ART |
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218 # |
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219 # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), |
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220 # Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), |
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221 # San Luis (SL), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) |
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222 # |
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223 # Shanks & Pottenger also make the following claims, which we haven't verified: |
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224 # - Formosa switched to -3:00 on 1991-01-07. |
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225 # - Misiones switched to -3:00 on 1990-12-29. |
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226 # - Chaco switched to -3:00 on 1991-01-04. |
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227 # - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15, |
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228 # then to -4:00 on 1991-03-01, then to -3:00 on 1991-06-01. |
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229 # - Santiago del Estero switched to -4:00 on 1991-04-01, |
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230 # then to -3:00 on 1991-04-26. |
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231 # |
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232 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 |
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233 -4:16:48 - CMT 1920 May |
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234 -4:00 - ART 1930 Dec |
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235 -4:00 Arg AR%sT 1969 Oct 5 |
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236 -3:00 Arg AR%sT 1991 Mar 3 |
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237 -4:00 - WART 1991 Oct 20 |
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238 -3:00 Arg AR%sT 1999 Oct 3 |
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239 -4:00 Arg AR%sT 2000 Mar 3 |
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240 -3:00 - ART |
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241 # |
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242 # Tucuman (TM) |
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243 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 |
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244 -4:16:48 - CMT 1920 May |
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245 -4:00 - ART 1930 Dec |
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246 -4:00 Arg AR%sT 1969 Oct 5 |
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247 -3:00 Arg AR%sT 1991 Mar 3 |
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248 -4:00 - WART 1991 Oct 20 |
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249 -3:00 Arg AR%sT 1999 Oct 3 |
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250 -4:00 Arg AR%sT 2000 Mar 3 |
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251 -3:00 - ART 2004 Jun 1 |
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252 -4:00 - WART 2004 Jun 13 |
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253 -3:00 - ART |
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254 # |
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255 # La Rioja (LR) |
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256 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 |
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257 -4:16:48 - CMT 1920 May |
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258 -4:00 - ART 1930 Dec |
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259 -4:00 Arg AR%sT 1969 Oct 5 |
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260 -3:00 Arg AR%sT 1991 Mar 1 |
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261 -4:00 - WART 1991 May 7 |
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262 -3:00 Arg AR%sT 1999 Oct 3 |
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263 -4:00 Arg AR%sT 2000 Mar 3 |
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264 -3:00 - ART 2004 Jun 1 |
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265 -4:00 - WART 2004 Jun 20 |
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266 -3:00 - ART |
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267 # |
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268 # San Juan (SJ) |
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269 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 |
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270 -4:16:48 - CMT 1920 May |
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271 -4:00 - ART 1930 Dec |
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272 -4:00 Arg AR%sT 1969 Oct 5 |
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273 -3:00 Arg AR%sT 1991 Mar 1 |
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274 -4:00 - WART 1991 May 7 |
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275 -3:00 Arg AR%sT 1999 Oct 3 |
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276 -4:00 Arg AR%sT 2000 Mar 3 |
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277 -3:00 - ART 2004 May 31 |
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278 -4:00 - WART 2004 Jul 25 |
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279 -3:00 - ART |
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280 # |
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281 # Jujuy (JY) |
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282 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 |
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283 -4:16:48 - CMT 1920 May |
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284 -4:00 - ART 1930 Dec |
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285 -4:00 Arg AR%sT 1969 Oct 5 |
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286 -3:00 Arg AR%sT 1990 Mar 4 |
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287 -4:00 - WART 1990 Oct 28 |
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288 -4:00 1:00 WARST 1991 Mar 17 |
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289 -4:00 - WART 1991 Oct 6 |
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290 -3:00 1:00 ARST 1992 |
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291 -3:00 Arg AR%sT 1999 Oct 3 |
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292 -4:00 Arg AR%sT 2000 Mar 3 |
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293 -3:00 - ART |
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294 # |
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295 # Catamarca (CT), Chubut (CH) |
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296 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 |
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297 -4:16:48 - CMT 1920 May |
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298 -4:00 - ART 1930 Dec |
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299 -4:00 Arg AR%sT 1969 Oct 5 |
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300 -3:00 Arg AR%sT 1991 Mar 3 |
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301 -4:00 - WART 1991 Oct 20 |
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302 -3:00 Arg AR%sT 1999 Oct 3 |
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303 -4:00 Arg AR%sT 2000 Mar 3 |
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304 -3:00 - ART 2004 Jun 1 |
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305 -4:00 - WART 2004 Jun 20 |
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306 -3:00 - ART |
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307 # |
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308 # Mendoza (MZ) |
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309 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 |
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310 -4:16:48 - CMT 1920 May |
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311 -4:00 - ART 1930 Dec |
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312 -4:00 Arg AR%sT 1969 Oct 5 |
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313 -3:00 Arg AR%sT 1990 Mar 4 |
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314 -4:00 - WART 1990 Oct 15 |
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315 -4:00 1:00 WARST 1991 Mar 1 |
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316 -4:00 - WART 1991 Oct 15 |
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317 -4:00 1:00 WARST 1992 Mar 1 |
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318 -4:00 - WART 1992 Oct 18 |
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319 -3:00 Arg AR%sT 1999 Oct 3 |
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320 -4:00 Arg AR%sT 2000 Mar 3 |
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321 -3:00 - ART 2004 May 23 |
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322 -4:00 - WART 2004 Sep 26 |
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323 -3:00 - ART |
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324 # |
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325 # Santa Cruz (SC) |
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326 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 |
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327 -4:16:48 - CMT 1920 May # Cordoba Mean Time |
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328 -4:00 - ART 1930 Dec |
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329 -4:00 Arg AR%sT 1969 Oct 5 |
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330 -3:00 Arg AR%sT 1999 Oct 3 |
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331 -4:00 Arg AR%sT 2000 Mar 3 |
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332 -3:00 - ART 2004 Jun 1 |
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333 -4:00 - WART 2004 Jun 20 |
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334 -3:00 - ART |
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335 # |
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336 # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) |
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337 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 |
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338 -4:16:48 - CMT 1920 May # Cordoba Mean Time |
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339 -4:00 - ART 1930 Dec |
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340 -4:00 Arg AR%sT 1969 Oct 5 |
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341 -3:00 Arg AR%sT 1999 Oct 3 |
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342 -4:00 Arg AR%sT 2000 Mar 3 |
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343 -3:00 - ART 2004 May 30 |
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344 -4:00 - WART 2004 Jun 20 |
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345 -3:00 - ART |
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346 |
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347 # Aruba |
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348 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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349 Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad |
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350 -4:30 - ANT 1965 # Netherlands Antilles Time |
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351 -4:00 - AST |
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352 |
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353 # Bolivia |
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354 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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355 Zone America/La_Paz -4:32:36 - LMT 1890 |
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356 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT |
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357 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST |
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358 -4:00 - BOT # Bolivia Time |
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359 |
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360 # Brazil |
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361 |
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362 # From Paul Eggert (1993-11-18): |
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363 # The mayor of Rio recently attempted to change the time zone rules |
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364 # just in his city, in order to leave more summer time for the tourist trade. |
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365 # The rule change lasted only part of the day; |
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366 # the federal government refused to follow the city's rules, and business |
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367 # was in a chaos, so the mayor backed down that afternoon. |
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368 |
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369 # From IATA SSIM (1996-02): |
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370 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), |
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371 # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), |
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372 # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), |
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373 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. |
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374 # [The last three states are new to this issue of the IATA SSIM.] |
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375 |
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376 # From Gwillim Law (1996-10-07): |
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377 # Geography, history (Tocantins was part of Goias until 1989), and other |
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378 # sources of time zone information lead me to believe that AL, SE, and TO were |
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379 # always in BR1, and so the only change was whether or not they observed DST.... |
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380 # The earliest issue of the SSIM I have is 2/91. Each issue from then until |
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381 # 9/95 says that DST is observed only in the ten states I quoted from 9/95, |
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382 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 |
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383 # (UTC-4).... The other two time zones given for Brazil are BR3, which is |
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384 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is |
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385 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's |
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386 # become part of the state of Pernambuco). The boundary between BR1 and BR2 |
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387 # has never been clearly stated. They've simply been called East and West. |
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388 # However, some conclusions can be drawn from another IATA manual: the Airline |
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389 # Coding Directory, which lists close to 400 airports in Brazil. For each |
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390 # airport it gives a time zone which is coded to the SSIM. From that |
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391 # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), |
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392 # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do |
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393 # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. |
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394 |
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395 # From Marcos Tadeu (1998-09-27): |
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396 # <a href="http://pcdsh01.on.br/verao1.html"> |
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397 # Brazilian official page |
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398 # </a> |
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399 |
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400 # From Jesper Norgaard (2000-11-03): |
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401 # [For an official list of which regions in Brazil use which time zones, see:] |
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402 # http://pcdsh01.on.br/Fusbr.htm |
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403 # http://pcdsh01.on.br/Fusbrhv.htm |
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404 |
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405 # From Celso Doria via David Madeo (2002-10-09): |
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406 # The reason for the delay this year has to do with elections in Brazil. |
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407 # |
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408 # Unlike in the United States, elections in Brazil are 100% computerized and |
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409 # the results are known almost immediately. Yesterday, it was the first |
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410 # round of the elections when 115 million Brazilians voted for President, |
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411 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is |
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412 # counting (or re-counting) votes anymore and we know there will be a second |
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413 # round for the Presidency and also for some Governors. The 2nd round will |
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414 # take place on October 27th. |
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415 # |
|
416 # The reason why the DST will only begin November 3rd is that the thousands |
|
417 # of electoral machines used cannot have their time changed, and since the |
|
418 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, |
|
419 # the Government decided to postpone DST, instead of changing the Constitution |
|
420 # (maybe, for the next elections, it will be possible to change the clock)... |
|
421 |
|
422 # From Rodrigo Severo (2004-10-04): |
|
423 # It's just the biannual change made necessary by the much hyped, supposedly |
|
424 # modern Brazilian eletronic voting machines which, apparently, can't deal |
|
425 # with a time change between the first and the second rounds of the elections. |
|
426 |
|
427 # From Paul Eggert (2002-10-10): |
|
428 # The official decrees referenced below are mostly taken from |
|
429 # <a href="http://pcdsh01.on.br/DecHV.html"> |
|
430 # Decretos sobre o Horario de Verao no Brasil |
|
431 # </a>. |
|
432 |
|
433 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
434 # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) |
|
435 # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) |
|
436 Rule Brazil 1931 only - Oct 3 11:00 1:00 S |
|
437 Rule Brazil 1932 1933 - Apr 1 0:00 0 - |
|
438 Rule Brazil 1932 only - Oct 3 0:00 1:00 S |
|
439 # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) |
|
440 # revoked DST. |
|
441 # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) |
|
442 # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) |
|
443 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S |
|
444 Rule Brazil 1950 only - Apr 16 1:00 0 - |
|
445 Rule Brazil 1951 1952 - Apr 1 0:00 0 - |
|
446 # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) |
|
447 Rule Brazil 1953 only - Mar 1 0:00 0 - |
|
448 # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) |
|
449 # revoked DST. |
|
450 # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) |
|
451 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 |
|
452 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. |
|
453 # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) |
|
454 # extended the above decree to all of the national territory on 12-09. |
|
455 Rule Brazil 1963 only - Dec 9 0:00 1:00 S |
|
456 # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) |
|
457 # extended summer time by one day to 1964-03-01 00:00 (start of school). |
|
458 Rule Brazil 1964 only - Mar 1 0:00 0 - |
|
459 # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) |
|
460 Rule Brazil 1965 only - Jan 31 0:00 1:00 S |
|
461 Rule Brazil 1965 only - Mar 31 0:00 0 - |
|
462 # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) |
|
463 Rule Brazil 1965 only - Dec 1 0:00 1:00 S |
|
464 # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) |
|
465 Rule Brazil 1966 1968 - Mar 1 0:00 0 - |
|
466 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S |
|
467 # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) |
|
468 # revoked DST. |
|
469 # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) |
|
470 Rule Brazil 1985 only - Nov 2 0:00 1:00 S |
|
471 # Decree 92,310 (1986-01-21) |
|
472 # Decree 92,463 (1986-03-13) |
|
473 Rule Brazil 1986 only - Mar 15 0:00 0 - |
|
474 # Decree 93,316 (1986-10-01) |
|
475 Rule Brazil 1986 only - Oct 25 0:00 1:00 S |
|
476 Rule Brazil 1987 only - Feb 14 0:00 0 - |
|
477 # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) |
|
478 Rule Brazil 1987 only - Oct 25 0:00 1:00 S |
|
479 Rule Brazil 1988 only - Feb 7 0:00 0 - |
|
480 # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) |
|
481 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) |
|
482 Rule Brazil 1988 only - Oct 16 0:00 1:00 S |
|
483 Rule Brazil 1989 only - Jan 29 0:00 0 - |
|
484 # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) |
|
485 # with the same exceptions |
|
486 Rule Brazil 1989 only - Oct 15 0:00 1:00 S |
|
487 Rule Brazil 1990 only - Feb 11 0:00 0 - |
|
488 # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) |
|
489 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. |
|
490 # Decree 99,629 (1990-10-19) adds BA, MT. |
|
491 Rule Brazil 1990 only - Oct 21 0:00 1:00 S |
|
492 Rule Brazil 1991 only - Feb 17 0:00 0 - |
|
493 # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) |
|
494 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. |
|
495 Rule Brazil 1991 only - Oct 20 0:00 1:00 S |
|
496 Rule Brazil 1992 only - Feb 9 0:00 0 - |
|
497 # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) |
|
498 # adopted by same states. |
|
499 Rule Brazil 1992 only - Oct 25 0:00 1:00 S |
|
500 Rule Brazil 1993 only - Jan 31 0:00 0 - |
|
501 # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) |
|
502 # adopted by same states, plus AM. |
|
503 # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; |
|
504 # web page corrected 2004-01-07) adopted by same states, minus AM. |
|
505 # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) |
|
506 # adopted by same states, plus MT and TO. |
|
507 # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) |
|
508 # adds AL, SE. |
|
509 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S |
|
510 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - |
|
511 Rule Brazil 1996 only - Feb 11 0:00 0 - |
|
512 # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) |
|
513 # adopted by same states, minus AL, SE. |
|
514 Rule Brazil 1996 only - Oct 6 0:00 1:00 S |
|
515 Rule Brazil 1997 only - Feb 16 0:00 0 - |
|
516 # From Daniel C. Sobral (1998-02-12): |
|
517 # In 1997, the DS began on October 6. The stated reason was that |
|
518 # because international television networks ignored Brazil's policy on DS, |
|
519 # they bought the wrong times on satellite for coverage of Pope's visit. |
|
520 # This year, the ending date of DS was postponed to March 1 |
|
521 # to help dealing with the shortages of electric power. |
|
522 # |
|
523 # Decree 2,317 (1997-09-04), adopted by same states. |
|
524 Rule Brazil 1997 only - Oct 6 0:00 1:00 S |
|
525 # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> |
|
526 # (1998-02-10) |
|
527 Rule Brazil 1998 only - Mar 1 0:00 0 - |
|
528 # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) |
|
529 # adopted by the same states as before. |
|
530 Rule Brazil 1998 only - Oct 11 0:00 1:00 S |
|
531 Rule Brazil 1999 only - Feb 21 0:00 0 - |
|
532 # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> |
|
533 # (1999-08-23) adopted by same states. |
|
534 # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) |
|
535 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. |
|
536 Rule Brazil 1999 only - Oct 3 0:00 1:00 S |
|
537 Rule Brazil 2000 only - Feb 27 0:00 0 - |
|
538 # Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) |
|
539 # adopted by the same states as before. |
|
540 # Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) |
|
541 # repeals DST in PE and RR, effective 2000-10-15 00:00. |
|
542 # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) |
|
543 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. |
|
544 # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> |
|
545 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. |
|
546 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S |
|
547 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - |
|
548 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. |
|
549 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm"></a> |
|
550 Rule Brazil 2002 only - Nov 3 0:00 1:00 S |
|
551 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. |
|
552 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm"></a> |
|
553 Rule Brazil 2003 only - Oct 19 0:00 1:00 S |
|
554 # Decree 5,223 (2004-10-01) reestablishes DST in MT. |
|
555 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm"></a> |
|
556 Rule Brazil 2004 only - Nov 2 0:00 1:00 S |
|
557 # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), |
|
558 # adopted by the same states as before. |
|
559 Rule Brazil 2005 only - Oct 16 0:00 1:00 S |
|
560 # Decree <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2006/Decreto/D5920.htm">5,920</a> |
|
561 # (2006-10-03), adopted by the same states as before. |
|
562 Rule Brazil 2006 max - Nov Sun>=1 0:00 1:00 S |
|
563 Rule Brazil 2007 max - Feb lastSun 0:00 0 - |
|
564 # The latest ruleset listed above says that the following states observe DST: |
|
565 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. |
|
566 # For dates after mid-2007, the above rules with TO="max" are guesses |
|
567 # and are quite possibly wrong, but are more likely than no DST at all. |
|
568 |
|
569 |
|
570 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
571 # |
|
572 # Fernando de Noronha (administratively part of PE) |
|
573 Zone America/Noronha -2:09:40 - LMT 1914 |
|
574 -2:00 Brazil FN%sT 1990 Sep 17 |
|
575 -2:00 - FNT 1999 Sep 30 |
|
576 -2:00 Brazil FN%sT 2000 Oct 15 |
|
577 -2:00 - FNT 2001 Sep 13 |
|
578 -2:00 Brazil FN%sT 2002 Oct 1 |
|
579 -2:00 - FNT |
|
580 # Other Atlantic islands have no permanent settlement. |
|
581 # These include Trindade and Martin Vaz (administratively part of ES), |
|
582 # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). |
|
583 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; |
|
584 # it also included the Penedos. |
|
585 # |
|
586 # Amapa (AP), east Para (PA) |
|
587 # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. |
|
588 # The division between east and west Para is the river Xingu. |
|
589 # In the north a very small part from the river Javary (now Jari I guess, |
|
590 # the border with Amapa) to the Amazon, then to the Xingu. |
|
591 Zone America/Belem -3:13:56 - LMT 1914 |
|
592 -3:00 Brazil BR%sT 1988 Sep 12 |
|
593 -3:00 - BRT |
|
594 # |
|
595 # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), |
|
596 # Paraiba (PB) |
|
597 Zone America/Fortaleza -2:34:00 - LMT 1914 |
|
598 -3:00 Brazil BR%sT 1990 Sep 17 |
|
599 -3:00 - BRT 1999 Sep 30 |
|
600 -3:00 Brazil BR%sT 2000 Oct 22 |
|
601 -3:00 - BRT 2001 Sep 13 |
|
602 -3:00 Brazil BR%sT 2002 Oct 1 |
|
603 -3:00 - BRT |
|
604 # |
|
605 # Pernambuco (PE) (except Atlantic islands) |
|
606 Zone America/Recife -2:19:36 - LMT 1914 |
|
607 -3:00 Brazil BR%sT 1990 Sep 17 |
|
608 -3:00 - BRT 1999 Sep 30 |
|
609 -3:00 Brazil BR%sT 2000 Oct 15 |
|
610 -3:00 - BRT 2001 Sep 13 |
|
611 -3:00 Brazil BR%sT 2002 Oct 1 |
|
612 -3:00 - BRT |
|
613 # |
|
614 # Tocantins (TO) |
|
615 Zone America/Araguaina -3:12:48 - LMT 1914 |
|
616 -3:00 Brazil BR%sT 1990 Sep 17 |
|
617 -3:00 - BRT 1995 Sep 14 |
|
618 -3:00 Brazil BR%sT 2003 Sep 24 |
|
619 -3:00 - BRT |
|
620 # |
|
621 # Alagoas (AL), Sergipe (SE) |
|
622 Zone America/Maceio -2:22:52 - LMT 1914 |
|
623 -3:00 Brazil BR%sT 1990 Sep 17 |
|
624 -3:00 - BRT 1995 Oct 13 |
|
625 -3:00 Brazil BR%sT 1996 Sep 4 |
|
626 -3:00 - BRT 1999 Sep 30 |
|
627 -3:00 Brazil BR%sT 2000 Oct 22 |
|
628 -3:00 - BRT 2001 Sep 13 |
|
629 -3:00 Brazil BR%sT 2002 Oct 1 |
|
630 -3:00 - BRT |
|
631 # |
|
632 # Bahia (BA) |
|
633 # There are too many Salvadors elsewhere, so use America/Bahia instead |
|
634 # of America/Salvador. |
|
635 Zone America/Bahia -2:34:04 - LMT 1914 |
|
636 -3:00 Brazil BR%sT 2003 Sep 24 |
|
637 -3:00 - BRT |
|
638 # |
|
639 # Goias (GO), Distrito Federal (DF), Minas Gerais (MG), |
|
640 # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), |
|
641 # Santa Catarina (SC), Rio Grande do Sul (RS) |
|
642 Zone America/Sao_Paulo -3:06:28 - LMT 1914 |
|
643 -3:00 Brazil BR%sT 1963 Oct 23 00:00 |
|
644 -3:00 1:00 BRST 1964 |
|
645 -3:00 Brazil BR%sT |
|
646 # |
|
647 # Mato Grosso do Sul (MS) |
|
648 Zone America/Campo_Grande -3:38:28 - LMT 1914 |
|
649 -4:00 Brazil AM%sT |
|
650 # |
|
651 # Mato Grosso (MT) |
|
652 Zone America/Cuiaba -3:44:20 - LMT 1914 |
|
653 -4:00 Brazil AM%sT 2003 Sep 24 |
|
654 -4:00 - AMT 2004 Oct 1 |
|
655 -4:00 Brazil AM%sT |
|
656 # |
|
657 # west Para (PA), Rondonia (RO) |
|
658 # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. |
|
659 Zone America/Porto_Velho -4:15:36 - LMT 1914 |
|
660 -4:00 Brazil AM%sT 1988 Sep 12 |
|
661 -4:00 - AMT |
|
662 # |
|
663 # Roraima (RR) |
|
664 Zone America/Boa_Vista -4:02:40 - LMT 1914 |
|
665 -4:00 Brazil AM%sT 1988 Sep 12 |
|
666 -4:00 - AMT 1999 Sep 30 |
|
667 -4:00 Brazil AM%sT 2000 Oct 15 |
|
668 -4:00 - AMT |
|
669 # |
|
670 # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto |
|
671 # The great circle line from Tabatinga to Porto Acre divides |
|
672 # east from west Amazonas. |
|
673 Zone America/Manaus -4:00:04 - LMT 1914 |
|
674 -4:00 Brazil AM%sT 1988 Sep 12 |
|
675 -4:00 - AMT 1993 Sep 28 |
|
676 -4:00 Brazil AM%sT 1994 Sep 22 |
|
677 -4:00 - AMT |
|
678 # |
|
679 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, |
|
680 # Eirunepe, Envira, Ipixuna |
|
681 Zone America/Eirunepe -4:39:28 - LMT 1914 |
|
682 -5:00 Brazil AC%sT 1988 Sep 12 |
|
683 -5:00 - ACT 1993 Sep 28 |
|
684 -5:00 Brazil AC%sT 1994 Sep 22 |
|
685 -5:00 - ACT |
|
686 # |
|
687 # Acre (AC) |
|
688 Zone America/Rio_Branco -4:31:12 - LMT 1914 |
|
689 -5:00 Brazil AC%sT 1988 Sep 12 |
|
690 -5:00 - ACT |
|
691 |
|
692 |
|
693 # Chile |
|
694 |
|
695 # From Eduardo Krell (1995-10-19): |
|
696 # The law says to switch to DST at midnight [24:00] on the second SATURDAY |
|
697 # of October.... The law is the same for March and October. |
|
698 # (1998-09-29): |
|
699 # Because of the drought this year, the government decided to go into |
|
700 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... |
|
701 # (unless there's another dry season next year, I guess). |
|
702 |
|
703 # From Julio I. Pacheco Troncoso (1999-03-18): |
|
704 # Because of the same drought, the government decided to end DST later, |
|
705 # on April 3, (one-time change). |
|
706 |
|
707 # From Oscar van Vlijmen (2006-10-08): |
|
708 # http://www.horaoficial.cl/cambio.htm |
|
709 |
|
710 # From Jesper Norgaard Welen (2006-10-08): |
|
711 # I think that there are some obvious mistakes in the suggested link |
|
712 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 |
|
713 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 |
|
714 # (they should have been 1990-09-15 and 1990-09-16 respectively), but |
|
715 # anyhow it clears up some doubts too. |
|
716 |
|
717 # The following data are from <http://www.horaoficial.cl/horaof.htm> |
|
718 # (2006-09-20), transcribed by Jesper Norgaard Welen. |
|
719 |
|
720 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
721 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S |
|
722 Rule Chile 1928 1932 - Apr 1 0:00 0 - |
|
723 Rule Chile 1942 only - Jun 1 4:00u 0 - |
|
724 Rule Chile 1942 only - Aug 1 5:00u 1:00 S |
|
725 Rule Chile 1946 only - Jul 15 4:00u 1:00 S |
|
726 Rule Chile 1946 only - Sep 1 3:00u 0:00 - |
|
727 Rule Chile 1947 only - Apr 1 4:00u 0 - |
|
728 Rule Chile 1968 only - Nov 3 4:00u 1:00 S |
|
729 Rule Chile 1969 only - Mar 30 3:00u 0 - |
|
730 Rule Chile 1969 only - Nov 23 4:00u 1:00 S |
|
731 Rule Chile 1970 only - Mar 29 3:00u 0 - |
|
732 Rule Chile 1971 only - Mar 14 3:00u 0 - |
|
733 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S |
|
734 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - |
|
735 Rule Chile 1973 only - Sep 30 4:00u 1:00 S |
|
736 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S |
|
737 Rule Chile 1987 only - Apr 12 3:00u 0 - |
|
738 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - |
|
739 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S |
|
740 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S |
|
741 Rule Chile 1990 only - Mar 18 3:00u 0 - |
|
742 Rule Chile 1990 only - Sep 16 4:00u 1:00 S |
|
743 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - |
|
744 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S |
|
745 Rule Chile 1997 only - Mar 30 3:00u 0 - |
|
746 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - |
|
747 Rule Chile 1998 only - Sep 27 4:00u 1:00 S |
|
748 Rule Chile 1999 only - Apr 4 3:00u 0 - |
|
749 Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S |
|
750 Rule Chile 2000 max - Mar Sun>=9 3:00u 0 - |
|
751 # IATA SSIM anomalies: (1992-02) says 1992-03-14; |
|
752 # (1996-09) says 1998-03-08. Ignore these. |
|
753 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
754 Zone America/Santiago -4:42:46 - LMT 1890 |
|
755 -4:42:46 - SMT 1910 # Santiago Mean Time |
|
756 -5:00 - CLT 1916 Jul 1 # Chile Time |
|
757 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time |
|
758 -4:00 - CLT 1919 Jul 1 # Chile Time |
|
759 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time |
|
760 -5:00 Chile CL%sT 1947 May 22 # Chile Time |
|
761 -4:00 Chile CL%sT |
|
762 Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri |
|
763 -7:17:28 - MMT 1932 Sep # Mataveri Mean Time |
|
764 -7:00 Chile EAS%sT 1982 Jan 18 21:00 # Easter I Time |
|
765 -6:00 Chile EAS%sT |
|
766 # |
|
767 # Sala y Gomez Island is like Pacific/Easter. |
|
768 # Other Chilean locations, including Juan Fernandez Is, San Ambrosio, |
|
769 # San Felix, and Antarctic bases, are like America/Santiago. |
|
770 |
|
771 # Colombia |
|
772 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
773 Rule CO 1992 only - May 3 0:00 1:00 S |
|
774 Rule CO 1993 only - Apr 4 0:00 0 - |
|
775 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
776 Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 |
|
777 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time |
|
778 -5:00 CO CO%sT # Colombia Time |
|
779 # Malpelo, Providencia, San Andres |
|
780 # no information; probably like America/Bogota |
|
781 |
|
782 # Curacao |
|
783 # |
|
784 # From Paul Eggert (2006-03-22): |
|
785 # Shanks & Pottenger say that The Bottom and Philipsburg have been at |
|
786 # -4:00 since standard time was introduced on 1912-03-02; and that |
|
787 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from |
|
788 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say |
|
789 # Saba Island has been like Curacao. |
|
790 # This all predates our 1970 cutoff, though. |
|
791 # |
|
792 # By July 2007 Curacao and St Maarten are planned to become |
|
793 # associated states within the Netherlands, much like Aruba; |
|
794 # Bonaire, Saba and St Eustatius would become directly part of the |
|
795 # Netherlands as Kingdom Islands. This won't affect their time zones |
|
796 # though, as far as we know. |
|
797 # |
|
798 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
799 Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad |
|
800 -4:30 - ANT 1965 # Netherlands Antilles Time |
|
801 -4:00 - AST |
|
802 |
|
803 # Ecuador |
|
804 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
805 Zone America/Guayaquil -5:19:20 - LMT 1890 |
|
806 -5:14:00 - QMT 1931 # Quito Mean Time |
|
807 -5:00 - ECT # Ecuador Time |
|
808 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno |
|
809 -5:00 - ECT 1986 |
|
810 -6:00 - GALT # Galapagos Time |
|
811 |
|
812 # Falklands |
|
813 |
|
814 # From Paul Eggert (2006-03-22): |
|
815 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except |
|
816 # the IATA gives 1996-09-08. Go with Shanks & Pottenger. |
|
817 |
|
818 # From Falkland Islands Government Office, London (2001-01-22) |
|
819 # via Jesper Norgaard: |
|
820 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 |
|
821 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 |
|
822 # September. It is anticipated that the clocks will revert back at 2 |
|
823 # am on Sunday 21 April 2002 and advance to summer time at 2 am on |
|
824 # Sunday 1 September. |
|
825 |
|
826 # From Rives McDow (2001-02-13): |
|
827 # |
|
828 # I have communicated several times with people there, and the last |
|
829 # time I had communications that was helpful was in 1998. Here is |
|
830 # what was said then: |
|
831 # |
|
832 # "The general rule was that Stanley used daylight saving and the Camp |
|
833 # did not. However for various reasons many people in the Camp have |
|
834 # started to use daylight saving (known locally as 'Stanley Time') |
|
835 # There is no rule as to who uses daylight saving - it is a matter of |
|
836 # personal choice and so it is impossible to draw a map showing who |
|
837 # uses it and who does not. Any list would be out of date as soon as |
|
838 # it was produced. This year daylight saving ended on April 18/19th |
|
839 # and started again on September 12/13th. I do not know what the rule |
|
840 # is, but can find out if you like. We do not change at the same time |
|
841 # as UK or Chile." |
|
842 # |
|
843 # I did have in my notes that the rule was "Second Saturday in Sep at |
|
844 # 0:00 until third Saturday in Apr at 0:00". I think that this does |
|
845 # not agree in some cases with Shanks; is this true? |
|
846 # |
|
847 # Also, there is no mention in the list that some areas in the |
|
848 # Falklands do not use DST. I have found in my communications there |
|
849 # that these areas are on the western half of East Falkland and all of |
|
850 # West Falkland. Stanley is the only place that consistently observes |
|
851 # DST. Again, as in other places in the world, the farmers don't like |
|
852 # it. West Falkland is almost entirely sheep farmers. |
|
853 # |
|
854 # I know one lady there that keeps a list of which farm keeps DST and |
|
855 # which doesn't each year. She runs a shop in Stanley, and says that |
|
856 # the list changes each year. She uses it to communicate to her |
|
857 # customers, catching them when they are home for lunch or dinner. |
|
858 |
|
859 # From Paul Eggert (2001-03-05): |
|
860 # For now, we'll just record the time in Stanley, since we have no |
|
861 # better info. |
|
862 |
|
863 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
864 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S |
|
865 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - |
|
866 Rule Falk 1939 only - Oct 1 0:00 1:00 S |
|
867 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S |
|
868 Rule Falk 1943 only - Jan 1 0:00 0 - |
|
869 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S |
|
870 Rule Falk 1984 1985 - Apr lastSun 0:00 0 - |
|
871 Rule Falk 1984 only - Sep 16 0:00 1:00 S |
|
872 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S |
|
873 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - |
|
874 Rule Falk 2001 max - Apr Sun>=15 2:00 0 - |
|
875 Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S |
|
876 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
877 Zone Atlantic/Stanley -3:51:24 - LMT 1890 |
|
878 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time |
|
879 -4:00 Falk FK%sT 1983 May # Falkland Is Time |
|
880 -3:00 Falk FK%sT 1985 Sep 15 |
|
881 -4:00 Falk FK%sT |
|
882 |
|
883 # French Guiana |
|
884 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
885 Zone America/Cayenne -3:29:20 - LMT 1911 Jul |
|
886 -4:00 - GFT 1967 Oct # French Guiana Time |
|
887 -3:00 - GFT |
|
888 |
|
889 # Guyana |
|
890 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
891 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown |
|
892 -3:45 - GBGT 1966 May 26 # Br Guiana Time |
|
893 -3:45 - GYT 1975 Jul 31 # Guyana Time |
|
894 -3:00 - GYT 1991 |
|
895 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. |
|
896 -4:00 - GYT |
|
897 |
|
898 # Paraguay |
|
899 # From Paul Eggert (2006-03-22): |
|
900 # Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, |
|
901 # and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 |
|
902 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. |
|
903 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
904 Rule Para 1975 1988 - Oct 1 0:00 1:00 S |
|
905 Rule Para 1975 1978 - Mar 1 0:00 0 - |
|
906 Rule Para 1979 1991 - Apr 1 0:00 0 - |
|
907 Rule Para 1989 only - Oct 22 0:00 1:00 S |
|
908 Rule Para 1990 only - Oct 1 0:00 1:00 S |
|
909 Rule Para 1991 only - Oct 6 0:00 1:00 S |
|
910 Rule Para 1992 only - Mar 1 0:00 0 - |
|
911 Rule Para 1992 only - Oct 5 0:00 1:00 S |
|
912 Rule Para 1993 only - Mar 31 0:00 0 - |
|
913 Rule Para 1993 1995 - Oct 1 0:00 1:00 S |
|
914 Rule Para 1994 1995 - Feb lastSun 0:00 0 - |
|
915 Rule Para 1996 only - Mar 1 0:00 0 - |
|
916 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now. |
|
917 # From Steffen Thorsen (2000-10-02): |
|
918 # I have three independent reports that Paraguay changed to DST this Sunday |
|
919 # (10-01). |
|
920 # |
|
921 # Translated by Gwillim Law (2001-02-27) from |
|
922 # <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> |
|
923 # Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) |
|
924 # </a>: |
|
925 # Starting at 0:00 today, the clock will be set forward 60 minutes, in |
|
926 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change |
|
927 # system has been operating for several years. Formerly there was a separate |
|
928 # decree each year; the new law has the same effect, but permanently. Every |
|
929 # year, the time will change on the first Sunday of October; likewise, the |
|
930 # clock will be set back on the first Sunday of March. |
|
931 # |
|
932 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S |
|
933 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. |
|
934 Rule Para 1997 only - Feb lastSun 0:00 0 - |
|
935 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but |
|
936 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). |
|
937 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - |
|
938 # From Rives McDow (2002-02-28): |
|
939 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the |
|
940 # dst method to be from the first Sunday in September to the first Sunday in |
|
941 # April. |
|
942 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - |
|
943 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S |
|
944 # |
|
945 # From Jesper Norgaard Welen (2005-01-02): |
|
946 # There are several sources that claim that Paraguay made |
|
947 # a timezone rule change in autumn 2004. |
|
948 # From Steffen Thorsen (2005-01-05): |
|
949 # Decree 1,867 (2004-03-05) |
|
950 # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) |
|
951 # <http://www.presidencia.gov.py/decretos/D1867.pdf> |
|
952 Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S |
|
953 Rule Para 2005 max - Mar Sun>=8 0:00 0 - |
|
954 |
|
955 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
956 Zone America/Asuncion -3:50:40 - LMT 1890 |
|
957 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time |
|
958 -4:00 - PYT 1972 Oct # Paraguay Time |
|
959 -3:00 - PYT 1974 Apr |
|
960 -4:00 Para PY%sT |
|
961 |
|
962 # Peru |
|
963 # |
|
964 # <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> |
|
965 # From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> |
|
966 # When we were in Peru in 1985-1986, they apparently switched over |
|
967 # sometime between December 29 and January 3 while we were on the Amazon. |
|
968 # |
|
969 # From Paul Eggert (2006-03-22): |
|
970 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. |
|
971 |
|
972 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
973 Rule Peru 1938 only - Jan 1 0:00 1:00 S |
|
974 Rule Peru 1938 only - Apr 1 0:00 0 - |
|
975 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S |
|
976 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - |
|
977 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S |
|
978 Rule Peru 1986 1987 - Apr 1 0:00 0 - |
|
979 Rule Peru 1990 only - Jan 1 0:00 1:00 S |
|
980 Rule Peru 1990 only - Apr 1 0:00 0 - |
|
981 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. |
|
982 Rule Peru 1994 only - Jan 1 0:00 1:00 S |
|
983 Rule Peru 1994 only - Apr 1 0:00 0 - |
|
984 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
985 Zone America/Lima -5:08:12 - LMT 1890 |
|
986 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? |
|
987 -5:00 Peru PE%sT # Peru Time |
|
988 |
|
989 # South Georgia |
|
990 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
991 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken |
|
992 -2:00 - GST # South Georgia Time |
|
993 |
|
994 # South Sandwich Is |
|
995 # uninhabited; scientific personnel have wintered |
|
996 |
|
997 # Suriname |
|
998 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
999 Zone America/Paramaribo -3:40:40 - LMT 1911 |
|
1000 -3:40:52 - PMT 1935 # Paramaribo Mean Time |
|
1001 -3:40:36 - PMT 1945 Oct # The capital moved? |
|
1002 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time |
|
1003 -3:30 - SRT 1984 Oct # Suriname Time |
|
1004 -3:00 - SRT |
|
1005 |
|
1006 # Trinidad and Tobago |
|
1007 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
1008 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 |
|
1009 -4:00 - AST |
|
1010 |
|
1011 # Uruguay |
|
1012 # From Paul Eggert (1993-11-18): |
|
1013 # Uruguay wins the prize for the strangest peacetime manipulation of the rules. |
|
1014 # From Shanks & Pottenger: |
|
1015 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
1016 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. |
|
1017 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS |
|
1018 Rule Uruguay 1924 1926 - Apr 1 0:00 0 - |
|
1019 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS |
|
1020 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS |
|
1021 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. |
|
1022 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - |
|
1023 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS |
|
1024 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - |
|
1025 # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. |
|
1026 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS |
|
1027 # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, |
|
1028 # and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. |
|
1029 Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS |
|
1030 Rule Uruguay 1942 only - Jan 1 0:00 0 - |
|
1031 Rule Uruguay 1942 only - Dec 14 0:00 1:00 S |
|
1032 Rule Uruguay 1943 only - Mar 14 0:00 0 - |
|
1033 Rule Uruguay 1959 only - May 24 0:00 1:00 S |
|
1034 Rule Uruguay 1959 only - Nov 15 0:00 0 - |
|
1035 Rule Uruguay 1960 only - Jan 17 0:00 1:00 S |
|
1036 Rule Uruguay 1960 only - Mar 6 0:00 0 - |
|
1037 Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S |
|
1038 Rule Uruguay 1965 only - Sep 26 0:00 0 - |
|
1039 Rule Uruguay 1966 1967 - Oct 31 0:00 0 - |
|
1040 Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS |
|
1041 Rule Uruguay 1968 1970 - Dec 2 0:00 0 - |
|
1042 Rule Uruguay 1972 only - Apr 24 0:00 1:00 S |
|
1043 Rule Uruguay 1972 only - Aug 15 0:00 0 - |
|
1044 Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS |
|
1045 Rule Uruguay 1974 only - Dec 22 0:00 1:00 S |
|
1046 Rule Uruguay 1976 only - Oct 1 0:00 0 - |
|
1047 Rule Uruguay 1977 only - Dec 4 0:00 1:00 S |
|
1048 Rule Uruguay 1978 only - Apr 1 0:00 0 - |
|
1049 Rule Uruguay 1979 only - Oct 1 0:00 1:00 S |
|
1050 Rule Uruguay 1980 only - May 1 0:00 0 - |
|
1051 Rule Uruguay 1987 only - Dec 14 0:00 1:00 S |
|
1052 Rule Uruguay 1988 only - Mar 14 0:00 0 - |
|
1053 Rule Uruguay 1988 only - Dec 11 0:00 1:00 S |
|
1054 Rule Uruguay 1989 only - Mar 12 0:00 0 - |
|
1055 Rule Uruguay 1989 only - Oct 29 0:00 1:00 S |
|
1056 # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, |
|
1057 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. |
|
1058 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - |
|
1059 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S |
|
1060 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S |
|
1061 Rule Uruguay 1993 only - Feb 28 0:00 0 - |
|
1062 # From Eduardo Cota (2004-09-20): |
|
1063 # The uruguayan government has decreed a change in the local time.... |
|
1064 # http://www.presidencia.gub.uy/decretos/2004091502.htm |
|
1065 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S |
|
1066 # From Steffen Thorsen (2005-03-11): |
|
1067 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to |
|
1068 # save energy ... it was postponed two weeks.... |
|
1069 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm |
|
1070 Rule Uruguay 2005 only - Mar 27 2:00 0 - |
|
1071 # From Eduardo Cota (2005-09-27): |
|
1072 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF |
|
1073 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at |
|
1074 # 02:00 local time, official time in Uruguay will be at GMT -2. |
|
1075 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S |
|
1076 Rule Uruguay 2006 only - Mar 12 2:00 0 - |
|
1077 # From Jesper Norgaard Welen (2006-09-06): |
|
1078 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF |
|
1079 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S |
|
1080 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - |
|
1081 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
1082 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 |
|
1083 -3:44:44 - MMT 1920 May 1 # Montevideo MT |
|
1084 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time |
|
1085 -3:00 Uruguay UY%sT |
|
1086 |
|
1087 # Venezuela |
|
1088 # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
1089 Zone America/Caracas -4:27:44 - LMT 1890 |
|
1090 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? |
|
1091 -4:30 - VET 1965 # Venezuela Time |
|
1092 -4:00 - VET |