Mountain Standard Time (MST) is a time zone used in the Mountain region of North America. It is 7 hours behind Coordinated Universal Time (UTC−7) and is used in cities such as Denver, Phoenix, and Salt Lake City during the standard time period.
Current Time in MST
Quick Facts
- Time Zone: Mountain Standard Time (MST)
- UTC Offset: UTC −7 hours
- Daylight Saving Time: Yes (switches to MDT)
- Major Cities: Denver, Phoenix, Salt Lake City, Calgary
- Region: Mountain states of the United States and parts of Canada
Time Difference From MST
Examples of time differences compared to MST:
- New York: +2 hours ahead
- Chicago: +1 hour ahead
- Los Angeles: −1 hour behind
- London: +7 hours ahead
- Sydney: +17 hours ahead
Daylight Saving Time
Most regions using Mountain Standard Time switch to Mountain Daylight Time (MDT) during daylight saving time.
- Standard Time: UTC −7
- Daylight Saving Time: UTC −6
The clock changes usually occur:
- March: clocks move forward
- November: clocks move back
⚠️ Important:
Arizona (except the Navajo Nation) does not observe daylight saving time, meaning it stays on MST throughout the year.
Frequently Asked Questions
What does MST stand for?
MST stands for Mountain Standard Time.
Which places use MST?
MST is used in parts of the United States and Canada, including Colorado, Utah, Wyoming, and Alberta.
What is the difference between MST and MDT?
MST is used during the standard time period, while MDT is used during daylight saving time.
Where MST Is Used
Mountain Standard Time is used in:
Additional Note
Mountain Time is used across the central western region of North America and helps coordinate transportation schedules, broadcasting, and business operations across the continent.



