Mountain Time Zone - MT

Mountain Time is actually a blanket term used to describe the areas that observe either the Mountain Standard Time or Mountain Daylight Time.

Mountain Standard Time

Mountain Standard Time (MST) is seven hours behind the Coordinated Universal Time standard, written as an offset of UTC - 7:00. That means to find the standard time in the zone you must subtract seven hours from Coordinated Universal Time.

Mountain Daylight Time

Mountain Daylight Time (MDT) is six hours behind the Coordinated Universal Time standard, written as an offset of UTC - 6:00. That means to find the standard time in the zone you must subtract six hours from Coordinated Universal Time.

Territories observing these time zones are primarily in North America. They run through several U.S. and Mexican states, and Canadian provinces.

In many of the areas where this time zone is used, during fall to winter months Mountain Standard Time or MST is observed, and then during Daylight Saving (spring to summer months) Mountain Daylight Time or MDT is used.

Locations in Mountain Time Zone

The following areas are included in the time zone:

• North America

  • United States

    • Arizona

    • Colorado

    • Idaho

    • Kansas

    • Montana

    • Nebraska

    • New Mexico

    • North Dakota

    • Oregon

    • South Dakota

    • Texas

    • Utah

    • Wyoming

  • Canada

    • Alberta

    • British Columbia

    • Northwest Territories

    • Nunavut

    • Saskatchewan

  • Mexico

    • Baja California

    • Chihuahua

    • Nayarit

    • Sinaloa

    • Sonora