In the United States and Canada, this time zone is generically called Mountain Time (MT). Specifically, it is Mountain Standard Time (MST) when observing standard time, and Mountain Daylight Time (MDT) when observing daylight saving time. The term refers to the Rocky Mountains, which range from British Columbia to New Mexico. In Mexico, this time zone is known as the tiempo de la montaña or zona Pacífico ("Pacific Zone"). In the US 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 2am MST to 3am MDT on the second Sunday in March and returns at 2am MDT to 1am MST on the first Sunday in November.
Sonora in Mexico and most of Arizona in the United States do not observe daylight saving time (DST), and during the spring, summer, and autumn months they are on the same time as Pacific Daylight Time.[4] The Navajo Nation, most of which lies within Arizona but extends into Utah and New Mexico (which do observe DST), does observe DST, although the Hopi Reservation, as well as some Arizona state offices lying within the Navajo Nation, do not.
On September 24, 2020, Yukon switched to the Mountain Standard Time year-round. Therefore, clocks in Yukon and Alberta are the same in the winter, and Alberta is one hour ahead in summer. Previously, the territory had used the Pacific Time Zone with daylight saving time: UTC−8 in winter and UTC−7 in summer.[5]
One province and one territory are split between the Mountain Time Zone and the Pacific Time Zone:
^The specification for the Mountain Time Zone in the United States is set forth at 49 CFR 71.8.[1] The boundary between Central and Mountain time zones is set forth at 49 CFR 71.7,[2] and the boundary between Mountain and Pacific time zones is set forth at 49 CFR 71.9.[3]
History of U.S. time zones and UTC conversion 8 August 2011 at the Wayback Machine
Canada time zone map
Time zones for major world cities
Official times across Canada
Official times across Mexico
Canada time map
U.S. time map
January 10, 2023
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The Mountain Time Zone of North America keeps time by subtracting seven hours from Coordinated Universal Time UTC when standard time UTC 07 00 is in effect and by subtracting six hours during daylight saving time UTC 06 00 The clock time in this zone is based on the mean solar time at the 105th meridian west of the Greenwich Observatory In the United States the exact specification for the location of time zones and the dividing lines between zones is set forth in the Code of Federal Regulations at 49 CFR 71 a Mountain Time ZoneTime zone Mountain Time ZoneUTC offsetMSTUTC 07 00MDTUTC 06 00Current time21 56 January 9 2023 MST refresh Observance of DSTDST is observed in some of this time zone In the United States and Canada this time zone is generically called Mountain Time MT Specifically it is Mountain Standard Time MST when observing standard time and Mountain Daylight Time MDT when observing daylight saving time The term refers to the Rocky Mountains which range from British Columbia to New Mexico In Mexico this time zone is known as the tiempo de la montana or zona Pacifico Pacific Zone In the US 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 Sonora in Mexico and most of Arizona in the United States do not observe daylight saving time DST and during the spring summer and autumn months they are on the same time as Pacific Daylight Time 4 The Navajo Nation most of which lies within Arizona but extends into Utah and New Mexico which do observe DST does observe DST although the Hopi Reservation as well as some Arizona state offices lying within the Navajo Nation do not The largest city in the Mountain Time Zone is Phoenix Arizona the Phoenix metropolitan area is the largest metropolitan area in the zone Contents 1 Canada 2 Mexico 3 United States 4 Major metropolitan areas 5 See also 6 Notes 7 References 8 External linksCanada EditMain article Time in Canada One province and one territory are fully contained in the Mountain Time Zone Alberta Yukon no DST On September 24 2020 Yukon switched to the Mountain Standard Time year round Therefore clocks in Yukon and Alberta are the same in the winter and Alberta is one hour ahead in summer Previously the territory had used the Pacific Time Zone with daylight saving time UTC 8 in winter and UTC 7 in summer 5 One province and one territory are split between the Mountain Time Zone and the Pacific Time Zone British Columbia northeastern and southeastern regions Northwest Territories TungstenOne territory and one province are split between the Mountain Time Zone and the Central Time Zone Nunavut Kitikmeot Region Saskatchewan Lloydminster and vicinityMexico EditMain article Time in Mexico The following states have the same time as Mountain Time Zone Baja California Sur Nayarit except for the Bahia de Banderas municipality which uses the Central Time Zone Sonora no daylight saving time always on MST Sinaloa Revillagigedo Islands Colima three of the four islands have the same time as Mountain Time Zone Socorro Island San Benedicto Island and Roca Partida United States EditMain article Time in the United States Six states are fully contained in the Mountain Time Zone Colorado Montana New Mexico Utah Wyoming Arizona does not use daylight saving time except for Navajo Nation Three states are split between the Mountain Time Zone and the Pacific Time Zone The following locations observe Mountain Time Idaho Southern Idaho Oregon the majority of Malheur County Nevada West WendoverFive states are split between the Mountain Time Zone and the Central Time Zone The following locations observe Mountain Time Kansas Sherman Wallace Greeley and Hamilton Counties Nebraska western third North Dakota the SW corner counties Adams Billings Bowman Golden Valley Grant Hettinger Slope Stark observe MST The counties of McKenzie Dunn and Sioux are split South Dakota western half Texas El Paso Hudspeth and northwestern Culberson CountiesMajor metropolitan areas EditThe following is a list of major cities located within the Mountain Time Zone ordered alphabetically Albuquerque New Mexico Arvada Colorado Aurora Colorado Boise Idaho Boulder Colorado Billings Montana Calgary Alberta Centennial Colorado Chandler Arizona Chihuahua Chihuahua Ciudad Juarez Chihuahua Ciudad Obregon Sonora Colorado Springs Colorado Culiacan Sinaloa Denver Colorado Edmonton Alberta El Paso Texas Flagstaff Arizona Fort Collins Colorado Gilbert Arizona Glendale Arizona Greeley Colorado Hermosillo Sonora La Paz Baja California Sur Lake Havasu City Arizona Lakewood Colorado Lethbridge Alberta Los Mochis Sinaloa Mazatlan Sinaloa Mesa Arizona Missoula Montana Nogales Sonora Peoria Arizona Phoenix Arizona Provo Utah Pueblo Colorado Rapid City South Dakota Red Deer Alberta Salt Lake City Utah San Luis Rio Colorado Sonora Scottsdale Arizona Surprise Arizona Tempe Arizona Tepic Nayarit Thornton Colorado Tucson Arizona West Jordan Utah West Valley City Utah Westminster Colorado Yuma ArizonaSee also EditEffects of time zones on North American broadcastingNotes Edit The specification for the Mountain Time Zone in the United States is set forth at 49 CFR 71 8 1 The boundary between Central and Mountain time zones is set forth at 49 CFR 71 7 2 and the boundary between Mountain and Pacific time zones is set forth at 49 CFR 71 9 3 References Edit 49 CFR 71 8 Mountain zone Code of Federal Regulations Retrieved 7 October 2011 49 CFR 71 7 Boundary line between central and mountain zones Code of Federal Regulations Retrieved 7 October 2011 49 CFR 71 9 Boundary line between mountain and Pacific zones Code of Federal Regulations Retrieved 7 October 2011 Robbins Ted 11 March 2007 Arizona Says No to Daylight Saving Time Weekend Edition Sunday National Public Radio Retrieved 18 June 2012 HOME Yukon Legislation Yukon Legislation Retrieved 16 February 2022 External links EditWorld time zone map Archived 24 December 2015 at the Wayback Machine U S time zone map History of U S time zones and UTC conversion Archived 8 August 2011 at the Wayback Machine Canada time zone map Time zones for major world cities Official times across Canada Official times across Mexico Canada time map U S time map Retrieved from https en wikipedia org w index php title Mountain Time Zone amp oldid 1132465844, wikipedia, wiki, book, books, library,
