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UTC−07:00

UTC−07:00 is an identifier for a time offset from UTC of −07:00. In North America, it is observed in the Mountain Time Zone during standard time, and in the Pacific Time Zone during the other eight months (see Daylight saving time). Some locations use it year-round.

Canada (Mountain Time Zone)^[1]
- Alberta
- British Columbia^[2]
  - Southeastern communities of Cranbrook, Golden, Invermere and Kimberley
- Northwest Territories
- Nunavut
  - Kitikmeot Region^[3]
- Saskatchewan
  - Lloydminster
Mexico (near US border with New Mexico & western Texas)
- Chihuahua
  - Municipalities of Janos, Ascensión, Juárez, Práxedis G. Guerrero and Guadalupe^[4]
United States (Mountain Time Zone)^[5]
- Arizona – Navajo Nation only (most of Arizona uses MST year-round)
- Colorado
- Idaho^[6]
  - South of Salmon River
- Kansas
  - Western counties of Greeley, Hamilton, Sherman and Wallace
- Montana
- Nebraska
  - Western counties of Cherry (western part), Hooker, Arthur, Keith, Perkins, Chase and Dundy, and all counties to the west of these
- Nevada
  - West Wendover
- New Mexico
- North Dakota
  - Southwestern counties of Adams, Billings, Bowman, Dunn (southern part), Golden Valley, Grant, Hettinger, McKenzie (southern part), Sioux (west of ND route 31), Slope and Stark
- Oklahoma
  - Kenton
- Oregon
  - Malheur County (except a small strip in the south)
- South Dakota
  - Western counties of Corson, Dewey, Stanley (western part), Jackson and Bennett, and all counties to the west of these
- Texas
  - Western counties of Culberson (northwestern part), El Paso and Hudspeth
- Utah
- Wyoming

Canada (Pacific Time Zone)^[7]
- British Columbia
  - Except Northern Rockies Regional Municipality, Peace River Regional District, and the southeastern communities of Cranbrook, Golden and Invermere^[2]
Mexico
- Baja California^[4]
United States (Pacific Time Zone)^[5]
- California
- Idaho
  - North of Salmon River^[6]
- Nevada (except West Wendover)
- Oregon
  - All of the state except Malheur County (but including a small strip in the south of Malheur)
- Washington

Principal cities: Phoenix, Hermosillo

Canada (Mountain Time Zone)
- British Columbia^[2]
  - Northern Rockies Regional Municipality
  - Peace River Regional District
- Yukon
Mexico (Zona Pacifico)
- Baja California Sur^[4]
- Nayarit (except the municipality of Bahía de Banderas)
- Sinaloa
- Sonora
United States (Mountain Time Zone)
- Arizona, except the Arizona Navajo Nation, which observes DST

^ "North American time zones: MST – Mountain Standard Time". Time and Date. Retrieved 28 September 2012.
^ ^a ^b ^c New Time Zone in Fort Nelson, timeanddate.com, September 21, 2015.
^ "Canada Time Zone Map". WorldTimeZone.com. Retrieved 9 November 2012.
^ ^a ^b ^c "Hora Oficial en los Estados Unidos Mexicanos" (in Spanish). Centro Nacional de Metrologîa. 2 April 2023. Retrieved 21 October 2023.
^ ^a ^b "Time Zones of the United States". Statoids. Retrieved 25 August 2012.
^ ^a ^b "15 USC § 264 – Part of Idaho in Fourth Zone". Legal Information Institute. Cornell University Law School. Retrieved 15 July 2012.
^ "North American time zones: PST – Pacific Standard Time". Time and Date. Retrieved 28 September 2012.