About Mountain Time
Mountain Time is used in Colorado, Utah, New Mexico, Wyoming, Montana and most of Idaho, plus Alberta in Canada. Arizona uses Mountain Standard Time all year and does not switch to daylight time.
Daylight saving time
Mountain Time switches between Mountain Standard Time (MST, UTC−7) and Mountain Daylight Time (MDT, UTC−6).
- Sunday, March 8, 2026: clocks go forward from 2:00 AM to 3:00 AM (MDT begins)
- Sunday, November 1, 2026: clocks go back from 2:00 AM to 1:00 AM (MST begins)
- Sunday, March 14, 2027: clocks go forward from 2:00 AM to 3:00 AM (MDT begins)
- Sunday, November 7, 2027: clocks go back from 2:00 AM to 1:00 AM (MST begins)
Cities on this clock
- Denver United States
- Salt Lake City United States
- Albuquerque United States
- Boise United States
- El Paso United States
- Colorado Springs United States
MT vs. other time zones
| Time zone | Now | vs. MST | Converter |
|---|---|---|---|
| Eastern Time EST/EDT | — | — | MST to EST |
| Central Time CST/CDT | — | — | MST to CST |
| Pacific Time PST/PDT | — | — | MST to PST |
| Alaska Time AKST/AKDT | — | — | MST to AKST |
| Hawaii Time HST | — | — | MST to HST |
| Greenwich Mean Time GMT | — | — | MST to GMT |
| Coordinated Universal Time UTC | — | — | MST to UTC |
| Central European Time CET/CEST | — | — | MST to CET |
| Eastern European Time EET/EEST | — | — | MST to EET |
| India Standard Time IST | — | — | MST to IST |
| Japan Standard Time JST | — | — | MST to JST |
| Australian Eastern Time AEST/AEDT | — | — | MST to AEST |
| Singapore Time SGT | — | — | MST to SGT |
| Philippine Time PHT | — | — | MST to PHT |
| Moscow Time MSK | — | — | MST to MSK |
| Gulf Standard Time GST | — | — | MST to GST |
Times update live. Plan a meeting across time zones.
Questions
What is the difference between MST and MDT?
MST (Mountain Standard Time) is the winter time, UTC−7. MDT (Mountain Daylight Time) is the daylight saving time used in summer, UTC−6. People often say MST all year, but strictly MDT applies while daylight saving is in effect.
When does Mountain Time change in 2026?
In 2026, clocks on Mountain Time go forward on Sunday, March 8, 2026 and back on Sunday, November 1, 2026.
Where is Mountain Time used?
Mountain Time is used in Colorado, Utah, New Mexico, Wyoming, Montana and most of Idaho, plus Alberta in Canada. Arizona uses Mountain Standard Time all year and does not switch to daylight time.
What is MST in UTC?
MST is UTC−7 and MDT is UTC−6.