Mountain Time Zone in North America saves time by subtracting seven hours from Coordinated Universal Time (UTC) when standard time applies, and by reducing six hours during daylight saving time (UTC-6). Clock time in this zone is based on the average solar time in the 105 meridian west of the Greenwich Observatory. In the United States, the exact specifications for the location of time zones and the dividing line between zones are set out in the Code of Federal Regulations at 49 CFR 71.
In the United States and Canada, this time zone is generally called Mountain Time ( MT ). Specifically, this is the Mountain Standard Time ( MST ) when observing the default time, and Mountain Seasons Time ( MDT ) when observing summer time. The term refers to how the Rocky Mountains, which range from northwest Canada to the state of New Mexico, USA, are almost entirely in the time zone. In Mexico, this time zone is known as PacÃÆ'fico Zone ( Pacific Zone ). In the US and Canada, the Mountain Time Zone lies to the east of the Pacific Time Zone and to the west of the Central Time Zone.
In some areas, starting in 2007, local time changed from MST to MDT at 2 Ã, am MST to 3 Ã, am MDT on the second Sunday in March and back on 2 Ã, am MDT to 1 Ã, being MST on the first Sunday in November.
Sonora in Mexico and most of Arizona in the United States do not observe summer time, and during spring, summer, and fall, they are at the same time as Pacific Rim Time. The Navajo Nation, mostly located in Arizona, observed the DST, although the Hopi Nation, as well as some Arizona state offices incorporated in the Navajo Nation, did not.
The largest city in Mountain Time Zone is Phoenix, Arizona. The metropolitan area of ​​Phoenix is ​​the largest metropolitan area in the zone; the next largest metropolitan area observing Mountain Time is Denver, followed by nearby El Paso-JuÃÆ'¡rez area. TV broadcasts in the Mountain Time Zone are usually recorded for one hour, thus indicating broadcast time from the Middle Time Zone (i.e. prime time starts at 7 pm, MT follows the same program sequence as the Middle Zone).
Video Mountain Time Zone
Kanada
Only one Canadian province is entirely contained in the Mountain Time Zone:
- Alberta
One province and one region divided between Mountain Time Zone and Pacific Time Zone:
- British Columbia - far east area
- Northwest Territory - Tungsten
One region and one province are divided between the Mountain Time Zone and the Middle Time Zone
- Nunavut: Kitikmeot Area
- Saskatchewan: Lloydminster and surrounding areas
Maps Mountain Time Zone
Mexico
The following countries have the same time as Mountain Time Zone:
-
- Baja California Sur
- Chihuahua
- Nayarit: Except for the city of BahÃÆ'a de Banderas, which uses the Central Time Zone.
- Sonora - no summer time, always at MST.
- Sinaloa
- Revillagigedo Islands (Colima): three of the four islands have the same time as the Mountain Time Zone, Isla Socorro, San Benedicto Island and Roca Partida.
United States
Five countries are fully contained in the Mountain Time Zone:
- Colorado
- Montana
- New Mexico
- Utah
- Wyoming
Four countries are divided between the Mountain Time Zone and the Pacific Time Zone. The following locations observe Mountain Time:
- Arizona - albeit entirely in the Mountain Time Zone, the clock is basically the same as Pacific Summer Time in the summer. The Navajo Nation, however, is not paying attention to Daylight Saving Time, and the clock is parallel to Mountain Daylight Time in the summer.
- Idaho - Southern Idaho
- Nevada - West Wendover is officially in Mountain Time; Mountain City, Owyhee, Jackpot, and Jarbidge observed Mountain Time unofficially
- Oregon - the majority of the Malheur Region
The six states are divided between the Mountain Time Zone and the Middle Time Zone. The following locations observe Mountain Time:
- Kansas - Sherman, Wallace, Greeley, and Hamilton county
- Nebraska - western third
- North Dakota - southwestern part and southern part of McKenzie County plus majority of Dunn County and far west of Sioux County
- Oklahoma - Kenton (de facto)
- South Dakota - western half
- Texas - El Paso and Hudspeth
See also
- Time zone effects on North American broadcast
Note
References
- World timezone map
- US. time zone map
- US time zone history and UTC conversions
- Canada timezone map
- Time zone for major cities of the world
- Official time in Canada
- Official time all over Mexico
- Canada time map
- US. time map
Source of the article : Wikipedia
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