Time-zone abbreviation
MST — Mountain Standard Time (UTC−7)
MST stands for Mountain Standard Time, seven hours behind UTC (UTC−7). Most of the zone shifts to Mountain Daylight Time (MDT, UTC−6) in summer; Arizona (except the Navajo Nation) stays on MST year-round.
Last updated · Maintained by Clockjumper
Current time in Mountain Standard Time
9:32 PM
Thursday, Jul 2
America/Denver
Quick facts
- Standard offset
- UTC−7 (MST)
- Daylight saving
- Yes — shifts to MDT (UTC−6)
- Next clock change
- Where it's used
- Used across the U.S. Mountain states and most of western Canada (Alberta). Phoenix and the rest of Arizona stay on MST all year.
Cities in Mountain Standard Time
Convert MST to your time zone
Need to convert a specific time? Use the Clockjumper converter, or jump to one of these popular MST conversions:
Frequently asked questions
- What does MST stand for?
- MST stands for Mountain Standard Time.
- What is the UTC offset of MST?
- Mountain Standard Time is UTC−7, shifting to UTC−6 (MDT) when daylight saving is in effect.
- Does MST observe daylight saving time?
- Yes — Mountain Standard Time shifts to MDT (UTC−6) during summer. The next clock change is on November 1, 2026.