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Mountain Standard Time (MST) is UTC-7, Mountain Daylight Time (MDT) is UTC-6
Mountain Standard Time (MST) is UTC-7, Mountain Daylight Time (MDT) is UTC-6

The Mountain Time Zone of North America keeps time by subtracting seven hours from Coordinated Universal Time (UTC-7) during the shortest days of autumn and winter, and by subtracting six hours during daylight saving time in the spring, summer, and early autumn (UTC-6). UTC−7 can be observed in Mountain Standard Time Zone Pacific Daylight Time Zone Canada Areas using UTC−6 Single zone countries Belize Costa Rica El Salvador Guatemala UTC−7 can be observed in Mountain Standard Time Zone Pacific Daylight Time Zone Canada Daylight saving time ( DST Areas using UTC−6 Single zone countries Belize Costa Rica El Salvador Guatemala The clock time in this zone is based on the mean solar time of the 105th degree meridian west of the Greenwich Observatory. Solar times are measures of the apparent position of the Sun on the Celestial sphere. This article is about the geographical concept For other uses of the word see Meridian. The Royal Observatory Greenwich (formerly the Royal Greenwich Observatory or RGO) was commissioned in 1675 by King Charles II, with the

In the United States and Canada, this time zone is generically called Mountain Time (MT). The United States of America —commonly referred to as the Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page Specifically, it is Mountain Standard Time (MST) when observing standard time (Winter), and Mountain Daylight Time (MDT) when observing daylight saving time. Standard time is the result of synchronizing clocks in different geographical locations within a Time zone to the same time rather than using the local meridian as Winter is one of the four Seasons of Temperate zones Calculated astronomically, it begins on the Solstice and ends on the Equinox In Mexico this time is known as the Pacific Zone. The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. 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. The Code of Federal Regulations (CFR is the codification of the general and permanent rules and regulations (sometimes called administrative law) published in the [1]

The zone is one hour ahead of the Pacific Time Zone and one hour behind the Central Time Zone. The Pacific Time Zone observes Standard time by subtracting eight hours from Coordinated Universal Time ( UTC-8) The Central Time Zone observes Standard time by subtracting six hours from UTC during standard time ( UTC−6) and five hours during Daylight saving

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.

Contents

Canada

Main article: Time in Canada

The following provinces and areas are part of the Mountain Time Zone:

Mexico

Main article: Time in Mexico

The following states are part of the Mountain Time Zone:

  • Baja California Sur
  • Chihuahua
  • Nayarit: just the Bahia de Banderas municipality uses the Central time zone. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page Canada is divided into six Time zones and ranks third among countries with respect to number of time zones after Russia (eleven and the United States (nine The provinces and territories of Canada combine to make up the world's second largest country in total area. Alberta (ælˈbɝtə is one of Canada's prairie provinces. It became a province on September 1 1905 The Northwest Territories (ˌnɔrθˌwɛstˈtɛrɨtɔriz ( NWT or NT; French, les Territoires du Nord-Ouest) is a territory The townsite of Tungsten is located at Cantung Mine in the Northwest Territories. Kitikmeot Region ( Inuktitut: Qitirmiut ᕿᑎᕐᒥᐅᑦ is an administrative region of Nunavut. Nunavut (ˈnuːnəvʊt ( Inuktitut syllabics: ᓄᓇᕗᑦ is the largest and newest territory of Canada; it was separated officially from the British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Saskatchewan (səˈskætʃəwən) is a prairie province in Canada, which has an area of 588276 Lloydminster is a Canadian City which has the unusual geographic distinction of straddling a provincial The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. Mexico uses three different UTC offsets as defined in the federal Law of Time Systems Zone 1 (Central Zone covers most of Mexico and is equivalent to UTC-6 Baja California Sur (pron BAH-hah kahl'-ee-FORE-nyah SOOR is one of the 31 States of Mexico. Nayarit is one of Mexico’s 31 states and is located on the central west coast bordering the Pacific Ocean.
  • Sinaloa
  • Sonora: always on MST - no daylight saving time
  • Revillagigedo Islands (Colima): 3 of the 4 islands uses the Mountain Time Zone, Isla Socorro, San Benedicto Island and Roca Partida. Sinaloa is one of the 31 states of Mexico. Geography Sinaloa is bordered to the north by Sonora and Chihuahua; to the south Sonora is one of the 31 federal states of Mexico and is located in the northwest of the country Daylight saving time ( DST The Revillagigedo Islands (also Revillagigedo Archipelago or Islas Revillagigedo) are a group of four Volcanic islands Islands in the For the state capital of the same name see Colima Colima. There is also a volcano named Colima, and a spider genus Colima ( Zodariidae Socorro Island ( Spanish: Isla Socorro) is a Volcanic island in the Revillagigedo Islands, a Mexican possession lying some San Benedicto, formerly Santo Tomás, is the third largest island of the Revillagigedo Islands, located at. Roca Partida ( Spanish: "Broken Rock" is the smallest of the Revillagigedo Islands in Mexico, administrated by the state of Colima

United States

Main article: Time in the United States

The following states or areas are part of the Mountain Time Zone:

  • Arizona - always on MST - no daylight saving time except in the Navajo Nation. The United States of America —commonly referred to as the Time in the United States, by law is divided into nine standard Time zones covering the states and its possessions with most of the United States observing Daylight A US state is any one of the fifty subnational entities of the United States of America that share Sovereignty with the federal government The State of Arizona ( is a state located in the southwestern region of the United States. The Navajo Nation ( Diné in the Navajo language) is a semi- autonomous Native American homeland covering about 26000 square miles (67339 square
  • New Mexico
  • Wyoming
  • Utah
  • Colorado
  • Montana
  • Idaho (except northern panhandle)
  • Eastern Oregon/Malheur County
  • the southwestern quadrant of North Dakota
  • the western half of South Dakota
  • the western third of Nebraska
  • the two westernmost counties in Texas (Hudspeth, El Paso) and a portion of Culberson County. New Mexico ( is a state located in the southwestern region of the United States of America. The State of Wyoming ( is a sparsely populated state in the western region of the United States. The State of Utah (ˈjuːtɔː or) is a western state of the United States. The State of Colorado ( or chiefly by nonresidents) is a state located in the Rocky Mountain region of the United States of America. Montana ( is a state in the Western United States. One-third of the state in the western part contains numerous mountain ranges (approximately 77 named of the northern The State of Idaho ( is a state in the Pacific Northwest region of the United States of America. Malheur County (mælˈhɪər is a county located in the southeast corner of the U North Dakota ( is a state located in the Midwestern and Western regions of the United States of America. South Dakota ( is a state located in the Midwestern region of the United States of America. Nebraska ( is a state located on the Great Plains of the Midwestern United States and Texas ( is a state geographically located in the South Central United States and is also known as the Lone Star State. Hudspeth County is a County located in the US state of Texas. El Paso County is the westernmost County in the US state of Texas. Culberson County is a County located in the US state of Texas.
  • four counties in Kansas (Greeley, Hamilton, Sherman, and Wallace)
  • the Nevada towns of West Wendover and Jackpot
  • the city of Kenton, Oklahoma

Arizona does not observe daylight saving time. Kansas ( is a Midwestern state in the central region of the United States of America, an area often referred to as the American " Greeley County (county code GL) is a county located in West Central Kansas, in the Central United States. Hamilton County (county code HM) is a county located in Southwest Kansas, in the Central United States. Sherman County (standard abbreviation SH) is a County located in the U Wallace County (standard abbreviation WA) is a County located in the U Nevada ( is a state located in the western region of the United States of America. West Wendover is a city in Elko County, Nevada, United States. Jackpot is an unincorporated town in Elko County, Nevada. In 2005 it was estimated to have a population Kenton is a small unincorporated community in Cimarron County, Oklahoma, United States. Oklahoma ( is a state located in the South Central region of the United States of America. The State of Arizona ( is a state located in the southwestern region of the United States. Daylight saving time ( DST However, the Navajo Nation, the bulk of whose area is within Arizona, observes daylight saving time throughout its territory. The Navajo Nation ( Diné in the Navajo language) is a semi- autonomous Native American homeland covering about 26000 square miles (67339 square The Hopi Reservation, an enclave inside the Navajo Nation, does not observe daylight saving time. The Hopi Reservation is a Native American reservation for the Hopi and Arizona Tewa people -- surrounded entirely by the Navajo Reservation --

Major metropolitan areas


References

  1. ^ The specification for the Mountain Time Zone is set forth at 49 CFR 71. Billings is the largest city in the US state of Montana, located in the south-central portion of the state Boise (ˈbɔɪsi is the capital and most populous city of the U Calgary (ˈkælgəriː is the largest city in the Province of Alberta, Canada Chihuahua is the name of both a state in Mexico and that state's capital city Ciudad Juárez, also known as just Juárez, is a city in the Mexican state of Chihuahua formerly known as El Paso del Norte. The City of Colorado Springs is a Home Rule Municipality that is the County seat and most populous city of El Paso County, Colorado, Cranbrook British Columbia ( is a City in southeast British Columbia, seat of the Regional District of East Kootenay. The City and County of Denver (pronounced /ˈdɛnvɚ/ is the Capital and the most populous city of Colorado, in the United States Edmonton (ˈɛdmɨntɨn is the capital of the Canadian province of Alberta. La Paz (Spanish for "The Peace" is the capital city of the Mexican state of Baja California Phoenix (ˈfiːˌnɪks O'odham Skikik, Yavapai Wasinka, Western Apache Fiinigis, Navajo Hoozdo, Salt Lake City is the Capital and the most populous city of the U Tucson (ˈtuːsɒn is the seat of Pima County Arizona, United States, located 118 miles (188 km) southeast 8, and is listed in Text and pdf formats.
    The boundary between Central and Mountain is set forth at 49 CFR 71. 7, and is listed in text and pdf formats. The boundary between Mountain and Pacific is set forth at 49 CFR 71. 9, and is listed in text and pdf formats.

Sources

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