The Hopi Reservation, an enclave inside the Navajo Nation, does not observe daylight saving time. However, the Navajo Nation, the bulk of whose area is within Arizona, observes daylight saving time throughout its territory. However, the entire state of Oklahoma is officially in the Central Time Zone.Īrizona does not observe daylight saving time. Nevada - the border towns of West Wendover (near Utah) and Jackpot (near Idaho)Īlso, the unincorporated community of Kenton, Oklahoma, located in the extreme western end of the Oklahoma Panhandle, unofficially observes Mountain Time (as the nearest sizeable towns are located in Colorado and New Mexico, both of which are in the Mountain Time Zone).Texas - the two westernmost counties (Hudspeth, El Paso) and a portion of Culberson County.The remaining three counties which border Colorado- Cheyenne, Morton and Stanton-observe Central Standard Time, as do all other Kansas counties. Kansas - only the counties of Sherman, Wallace, Greeley and Hamilton, all of which border Colorado.North Dakota - southwestern quadrant, southwest of ( Missouri River).Oregon - northern three quarters of Malheur County, on Idaho border.Idaho - southern half, south of Salmon River.Arizona - no daylight saving time, always on MST (winter time), except in the Navajo Nation.The following states or areas are part of the Mountain Time Zone: MT following the same order of programming as the other two time zones).
MOUNTAIN STANDARD TIME TV
TV broadcasting in the Mountain Time Zone is typically tape-delayed one hour, so that shows match the broadcast times of the Central Time Zone (i.e.
The largest city in the Mountain Time Zone is Phoenix, Arizona, and its metropolitan area is the largest in the zone.
The Navajo Nation, most of which lies within Arizona, does observe daylight saving time, although the Hopi Nation, as well as some Arizona state offices lying within the Navajo Nation, do not. Most of Arizona does not observe daylight saving time, and during the spring, summer, and autumn months it is on the same time as Pacific Daylight Time, though it is still called Mountain Standard Time in Arizona. In some areas, starting in 2007, the local time changes from MST to MDT at 02:00 LST to 03:00 LDT on the second Sunday in March and returns at 02:00 LDT to 01:00 LST on the first Sunday in November. The zone is one hour ahead of the Pacific Time Zone and one hour behind the Central Time Zone.
MOUNTAIN STANDARD TIME CODE
In the USA, the exact specification for the location of time zones and the dividing line between zones is set forth in the Code of Federal Regulations at 49 CFR 71.
In Mexico this time is known as the Pacific Zone. The term refers to the fact that the Rocky Mountains, which range from northwestern Canada to the US state of New Mexico, are located almost entirely in the time zone. Specifically, it is Mountain Standard Time (MST) when observing standard time (winter), and Mountain Daylight Time (MDT) when observing daylight saving time (spring, summer, fall). In the United States and Canada, this time zone is generically called Mountain Time (MT). The clock time in this zone is based on the mean solar time of the 105th meridian west of the Greenwich Observatory. The Mountain Time Zone of North America keeps time by subtracting seven hours from Coordinated Universal Time, also known as Greenwich Mean Time, during the shortest days of autumn and winter (UTC−7), and by subtracting six hours during daylight saving time in the spring, summer, and early autumn (UTC−6).
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