1,2c1
< # @(#)northamerica 7.51
< # $FreeBSD: head/share/zoneinfo/northamerica 58787 2000-03-29 14:01:46Z ru $
---
> # @(#)northamerica 7.52
4a4,5
> # $FreeBSD: head/share/zoneinfo/northamerica 64499 2000-08-10 19:36:46Z wollman $
>
1006,1016c1007,1011
< # From Guy Harris:
< # Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
< # Rules [before] 1987 are unknown.
< # The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
< # observe DST." This is presumably Baja California Norte, above 28th parallel,
< # as listed there; [there is also] "Baja California Sur and N. Pacific
< # Coast (States of Sinaloa and Sonora)."
<
< # From Bob Devine (1988-01-28):
< # The Federal District (where Mexico City is) has observed [DST] several
< # times but not recently.
---
> # Gwillim Law reports this source for daylight saving time in Mexico:
> # <a href="http://www.spin.com.mx/verano/">
> # Daylight saving time * SPIN-Internet (in Spanish)
> # </a>
> # Law (2000-03-09) translates it as follows:
1018,1020c1013,1018
< # I don't where to draw the line in the North Baja area. 28th latitude
< # sounds good -- but it may be higher (how far [d]o radio stations from
< # San Diego affect culture?).
---
> # Standard time effective in Mexico takes its origin in the
> # presidential decree of April 24, 1942. The time of the 120th
> # meridian applies to the state of Baja California; of the 105th
> # meridian to the states of Baja California Sur, Sonora, Sinaloa, and
> # Nayarit; and the time of the 90th meridian to the rest of the
> # country.
1022,1023c1020,1031
< # The dates of DST probably go back to 1981. The rules are the same as
< # US's. This is going to be a headache for US presidential electi[o]n years!
---
> # In the country, there have been several attempts made to adapt
> # standard time with the object of arriving at a better use of
> # daylight for social and economic activities. In December, 1981 a
> # permanent time zone was decreed for the states of Campeche, Yucatan,
> # and Quintana Roo, displacing them from the 90th to the 75th
> # meridian. This disposition was annulled on December 2, 1982.
> #
> # In 1988 a Summer Time was established for the states of Tamaulipas,
> # Nuevo Leon, Coahuila, and Durango, which meant that from the first
> # Sunday in April to the last [Sunday] of October those states
> # displaced their time from the 90th to the 75th meridian. That
> # disposition lasted for one year.
1025,1027c1033,1035
< # From Arthur David Olson (1988-02-13)
< # Since the 1981 starting date is only "probable," we'll keep the 1987
< # starting date below.
---
> # From Paul Eggert (2000-07-26):
> # Shanks gives 1942-04-01 instead of 1942-04-24, and omits the 1981
> # and 1988 DST experiments. Go with spin.com.mx.
1029,1052d1036
< # From U. S. Naval Observatory (1989-01-19):
< # MEXICO BAJA CAL N 7 H BEHIND UTC BAJA CALIFORNIA SUR AND
< # MEXICO BAJA CAL N N. PACIFIC COAST (STATES
< # MEXICO BAJA CAL N OF SINALOA AND SONORA)
< # MEXICO BAJA CAL N 8 H BEHIND UTC ABOVE 28TH PARALLEL APR 3
< # MEXICO BAJA CAL N - OCT 29
< # MEXICO BAJA CAL N 7 H BEHIND UTC ABOVE 28TH PARALLEL APR 3
< # MEXICO BAJA CAL N - 0CT 29
< # MEXICO 6 H BEHIND UTC STATES OF DURANGO,
< # MEXICO COAHUILA, NUEVO LEON,
< # MEXICO TAMAULIPAS
< # MEXICO 5 H BEHIND UTC STATES OF DURANGO,
< # MEXICO COAHUILA, NUEVO LEON,
< # MEXICO TAMAULIPAS APR 3 - OCT 29
< # MEXICO 6 H BEHIND UTC GENERAL MEXICO, STATES OF
< # MEXICO CAMPECHE, QUINTANA ROO AND
< # MEXICO YUCATAN
<
< # From Arthur David Olson (1989-01-21):
< # April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
< # USNO claims there should be four Mexican zones rather than three:
< # a zone that's GMT-8 with DST; a zone that's always GMT-7;
< # a zone that's GMT-6 with DST; and a zone that's always GMT-6.
<
1097d1080
< # From Shanks:
1114a1098,1099
> -6:00 - CST 1981 Dec
> -5:00 - EST 1982 Dec 2
1118a1104,1113
> # Campeche, Yucatan
> Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
> -6:00 - CST 1981 Dec
> -5:00 - EST 1982 Dec 2
> -6:00 Mexico C%sT
> # Coahuila, Durango, Nuevo Leon, Tamaulipas
> Zone America/Monterrey -6:41:16 - LMT 1922 Jan 1 0:01:32
> -6:00 - CST 1988
> -6:00 US C%sT 1989
> -6:00 Mexico C%sT
1145c1140
< -6:00 - CST 1942 Apr
---
> -6:00 - CST 1942 Apr 24
1150c1145
< # S Baja California, Nayarit, Sinaloa
---
> # Baja California Sur, Nayarit, Sinaloa
1157c1152
< -6:00 - CST 1942 Apr
---
> -6:00 - CST 1942 Apr 24
1165c1160
< -8:00 - PST 1942 Apr
---
> -8:00 - PST 1942 Apr 24
< # @(#)northamerica 7.51
< # $FreeBSD: head/share/zoneinfo/northamerica 58787 2000-03-29 14:01:46Z ru $
---
> # @(#)northamerica 7.52
4a4,5
> # $FreeBSD: head/share/zoneinfo/northamerica 64499 2000-08-10 19:36:46Z wollman $
>
1006,1016c1007,1011
< # From Guy Harris:
< # Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
< # Rules [before] 1987 are unknown.
< # The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
< # observe DST." This is presumably Baja California Norte, above 28th parallel,
< # as listed there; [there is also] "Baja California Sur and N. Pacific
< # Coast (States of Sinaloa and Sonora)."
<
< # From Bob Devine (1988-01-28):
< # The Federal District (where Mexico City is) has observed [DST] several
< # times but not recently.
---
> # Gwillim Law reports this source for daylight saving time in Mexico:
> # <a href="http://www.spin.com.mx/verano/">
> # Daylight saving time * SPIN-Internet (in Spanish)
> # </a>
> # Law (2000-03-09) translates it as follows:
1018,1020c1013,1018
< # I don't where to draw the line in the North Baja area. 28th latitude
< # sounds good -- but it may be higher (how far [d]o radio stations from
< # San Diego affect culture?).
---
> # Standard time effective in Mexico takes its origin in the
> # presidential decree of April 24, 1942. The time of the 120th
> # meridian applies to the state of Baja California; of the 105th
> # meridian to the states of Baja California Sur, Sonora, Sinaloa, and
> # Nayarit; and the time of the 90th meridian to the rest of the
> # country.
1022,1023c1020,1031
< # The dates of DST probably go back to 1981. The rules are the same as
< # US's. This is going to be a headache for US presidential electi[o]n years!
---
> # In the country, there have been several attempts made to adapt
> # standard time with the object of arriving at a better use of
> # daylight for social and economic activities. In December, 1981 a
> # permanent time zone was decreed for the states of Campeche, Yucatan,
> # and Quintana Roo, displacing them from the 90th to the 75th
> # meridian. This disposition was annulled on December 2, 1982.
> #
> # In 1988 a Summer Time was established for the states of Tamaulipas,
> # Nuevo Leon, Coahuila, and Durango, which meant that from the first
> # Sunday in April to the last [Sunday] of October those states
> # displaced their time from the 90th to the 75th meridian. That
> # disposition lasted for one year.
1025,1027c1033,1035
< # From Arthur David Olson (1988-02-13)
< # Since the 1981 starting date is only "probable," we'll keep the 1987
< # starting date below.
---
> # From Paul Eggert (2000-07-26):
> # Shanks gives 1942-04-01 instead of 1942-04-24, and omits the 1981
> # and 1988 DST experiments. Go with spin.com.mx.
1029,1052d1036
< # From U. S. Naval Observatory (1989-01-19):
< # MEXICO BAJA CAL N 7 H BEHIND UTC BAJA CALIFORNIA SUR AND
< # MEXICO BAJA CAL N N. PACIFIC COAST (STATES
< # MEXICO BAJA CAL N OF SINALOA AND SONORA)
< # MEXICO BAJA CAL N 8 H BEHIND UTC ABOVE 28TH PARALLEL APR 3
< # MEXICO BAJA CAL N - OCT 29
< # MEXICO BAJA CAL N 7 H BEHIND UTC ABOVE 28TH PARALLEL APR 3
< # MEXICO BAJA CAL N - 0CT 29
< # MEXICO 6 H BEHIND UTC STATES OF DURANGO,
< # MEXICO COAHUILA, NUEVO LEON,
< # MEXICO TAMAULIPAS
< # MEXICO 5 H BEHIND UTC STATES OF DURANGO,
< # MEXICO COAHUILA, NUEVO LEON,
< # MEXICO TAMAULIPAS APR 3 - OCT 29
< # MEXICO 6 H BEHIND UTC GENERAL MEXICO, STATES OF
< # MEXICO CAMPECHE, QUINTANA ROO AND
< # MEXICO YUCATAN
<
< # From Arthur David Olson (1989-01-21):
< # April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
< # USNO claims there should be four Mexican zones rather than three:
< # a zone that's GMT-8 with DST; a zone that's always GMT-7;
< # a zone that's GMT-6 with DST; and a zone that's always GMT-6.
<
1097d1080
< # From Shanks:
1114a1098,1099
> -6:00 - CST 1981 Dec
> -5:00 - EST 1982 Dec 2
1118a1104,1113
> # Campeche, Yucatan
> Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
> -6:00 - CST 1981 Dec
> -5:00 - EST 1982 Dec 2
> -6:00 Mexico C%sT
> # Coahuila, Durango, Nuevo Leon, Tamaulipas
> Zone America/Monterrey -6:41:16 - LMT 1922 Jan 1 0:01:32
> -6:00 - CST 1988
> -6:00 US C%sT 1989
> -6:00 Mexico C%sT
1145c1140
< -6:00 - CST 1942 Apr
---
> -6:00 - CST 1942 Apr 24
1150c1145
< # S Baja California, Nayarit, Sinaloa
---
> # Baja California Sur, Nayarit, Sinaloa
1157c1152
< -6:00 - CST 1942 Apr
---
> -6:00 - CST 1942 Apr 24
1165c1160
< -8:00 - PST 1942 Apr
---
> -8:00 - PST 1942 Apr 24