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In the United States and Canada, the Mountain Time Zone is to the east of the Pacific Time Zone and to the west of the Central Time Zone. In some areas, starting in 2007, the local time changes from MST to MDT at 2 am MST to 3 am MDT on the second Sunday in March and returns at 2 am MDT to 1 am MST on the first Sunday in November.
Standard Time (SDT) and Daylight Saving Time (DST) offsets from UTC in hours and minutes. For zones in which Daylight Saving is not observed, the DST offset shown in this table is a simple duplication of the SDT offset.
UTC−11:00 – American Samoa, Jarvis Island, Kingman Reef, Midway Atoll and Palmyra Atoll UTC−10:00 – Hawaii, most of the Aleutian Islands, and Johnston Atoll UTC−09:00 – Most of the state of Alaska UTC−08:00 – Pacific Time zone: the Pacific coast states, the Idaho Panhandle and most of Nevada and Oregon
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
Mexico observed daylight saving time (DST; Spanish: horario de verano) nationwide from 1996 to 2022, even in its tropical regions, because of its increasing economic ties to the United States. It previously observed the schedule used by the United States prior to 2007, with DST beginning on the first Sunday of April and ending on the last ...
In 1912, the first law was passed that called for the use of standard time.This law left the choice of time zone up to the municipal government. The result was a patchwork of towns following either of the two neighbouring time zones—Mountain Standard Time (MST) or Central Standard Time—with or without daylight saving time.
America/Hermosillo Sonora −07:00 −07:00 MST MX +2313−10625 America/Mazatlan Baja California Sur, Nayarit (most areas), Sinaloa −07:00 −07:00 MST MX +3144−10629 America/Ciudad_Juarez Chihuahua (US border - west) −07:00 −06:00 MST MDT Follows U.S. DST rules [a] MX +2838−10605 America/Chihuahua Chihuahua (most areas) −06:00 − ...
Converted small area of fishing camps west of Suomi ON from CST/CDT to EST/EDT; this improves alignment with boundaries shown on the official Ontario road map. Also applied a few cosmetic changes. 23:33, 25 October 2020: 1,114 × 942 (381 KB) MapGrid: Time zone boundary adjustment in the vicinity of Schefferville.