From d266202619128406b96d400b48ade4e8446b463c Mon Sep 17 00:00:00 2001 From: Tim Parenti Date: Sun, 18 Jan 2015 14:14:01 -0500 Subject: America/Cancun switches to EST without DST on 2015-02-01. * northamerica (America/Cancun): Switch to EST without DST on 2015-02-01 at 02:00. * zone.tab, zone1970.tab: Update description for America/Cancun. * NEWS: Document this. --- NEWS | 4 ++++ northamerica | 21 ++++++++++++++++++++- zone.tab | 2 +- zone1970.tab | 2 +- 4 files changed, 26 insertions(+), 3 deletions(-) diff --git a/NEWS b/NEWS index 28623b7..b372dc8 100644 --- a/NEWS +++ b/NEWS @@ -7,6 +7,10 @@ Unreleased, experimental changes New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. (Thanks to Tim Parenti.) + The Mexican state of Quintana Roo, represented by America/Cancun, + will shift from Central Time with DST to Eastern Time without DST + on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) + Changes affecting past time stamps Iceland observed DST in 1919 and 1921, and its 1939 fallback diff --git a/northamerica b/northamerica index de28529..cb94c5e 100644 --- a/northamerica +++ b/northamerica @@ -2297,6 +2297,24 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # efecto desde las dos horas del segundo domingo de marzo y concluirá a # las dos horas del primer domingo de noviembre. +# From Steffen Thorsen (2014-12-08), translated by Gwillim Law: +# The Mexican state of Quintana Roo will likely change to EST in 2015. +# +# http://www.unioncancun.mx/articulo/2014/12/04/medio-ambiente/congreso-aprueba-una-hora-mas-de-sol-en-qroo +# "With this change, the time conflict that has existed between the municipios +# of Quintana Roo and the municipio of Felipe Carrillo Puerto may come to an +# end. The latter declared itself in rebellion 15 years ago when a time change +# was initiated in Mexico, and since then it has refused to change its time +# zone along with the rest of the country." +# +# From Steffen Thorsen (2015-01-14), translated by Gwillim Law: +# http://sipse.com/novedades/confirman-aplicacion-de-nueva-zona-horaria-para-quintana-roo-132331.html +# "...the new time zone will come into effect at two o'clock on the first Sunday +# of February, when we will have to advance the clock one hour from its current +# time..." +# +# Also, the new zone will not use DST. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S @@ -2317,7 +2335,8 @@ Rule Mexico 2002 max - Oct lastSun 2:00 0 S Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 - -6:00 Mexico C%sT + -6:00 Mexico C%sT 2015 Feb 1 2:00 + -5:00 - EST # Campeche, Yucatán; represented by Mérida Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 -6:00 - CST 1981 Dec 23 diff --git a/zone.tab b/zone.tab index a7373f1..f418e7f 100644 --- a/zone.tab +++ b/zone.tab @@ -274,7 +274,7 @@ MU -2010+05730 Indian/Mauritius MV +0410+07330 Indian/Maldives MW -1547+03500 Africa/Blantyre MX +1924-09909 America/Mexico_City Central Time - most locations -MX +2105-08646 America/Cancun Central Time - Quintana Roo +MX +2105-08646 America/Cancun Eastern Standard Time - Quintana Roo MX +2058-08937 America/Merida Central Time - Campeche, Yucatan MX +2540-10019 America/Monterrey Mexican Central Time - Coahuila, Durango, Nuevo Leon, Tamaulipas away from US border MX +2550-09730 America/Matamoros US Central Time - Coahuila, Durango, Nuevo Leon, Tamaulipas near US border diff --git a/zone1970.tab b/zone1970.tab index e971bc7..5da0200 100644 --- a/zone1970.tab +++ b/zone1970.tab @@ -233,7 +233,7 @@ MT +3554+01431 Europe/Malta MU -2010+05730 Indian/Mauritius MV +0410+07330 Indian/Maldives MX +1924-09909 America/Mexico_City Central Time - most locations -MX +2105-08646 America/Cancun Central Time - Quintana Roo +MX +2105-08646 America/Cancun Eastern Standard Time - Quintana Roo MX +2058-08937 America/Merida Central Time - Campeche, Yucatán MX +2540-10019 America/Monterrey Mexican Central Time - Coahuila, Durango, Nuevo León, Tamaulipas away from US border MX +2550-09730 America/Matamoros US Central Time - Coahuila, Durango, Nuevo León, Tamaulipas near US border -- 2.1.1