UTC−7 can be observed in:

UTC-7: Blue (December), Orange (June), Yellow (all year round), Light Blue - Sea areas

As Standard Time (all year round)

•  Canada
  • The portion of the Peace River Valley in  British Columbia.
•  United States
  •  Arizona, except the Arizona Navajo Nation, which does observe DST.
•  Mexico
  • Sonora

As Standard Time (Northern Hemisphere Winter)

Mountain Standard Time Zone

•  Canada
  •  Alberta
  •  British Columbia (southeastern region)
  •  Northwest Territories (most of territory)
  •  Nunavut (western)
  •  Saskatchewan - only Lloydminster and surrounding area

•  United States
  • All of  Colorado,  Montana,  New Mexico,  Utah,  Wyoming
  • Most of  Idaho
  • Western parts of  Kansas,  Nebraska,  Oklahoma,  South Dakota ,  Texas
  • Southwestern parts of  North Dakota
  • Small parts in east of  Oregon ,  Nevada

•  Mexico
  • Baja California Sur,
  • Chihuahua (adopted UTC−7 in 1998),
  • Nayarit (most of state)
  • Sinaloa

As DST (Northern Hemisphere Summer)

Pacific Daylight Time Zone

•  Canada
  •  British Columbia (most of province),
  •  Yukon
•  Mexico
  • Baja California
•  United States
  • All of  California,  Washington
  • Most of  Nevada,  Oregon
  • Northern Section of  Idaho