MST: Mountain Time
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MST: Mountain Time
MST stands for Mountain Time, used in United States and Canada. It runs UTC-7 (MST) in the northern winter and UTC-6 (MDT) in summer, because the clocks change for daylight saving time.
Current MST time
Local times come from your browser's IANA time zone data.
MST time compared with UTC
MST runs UTC-7 in January and UTC-6 in July. When it is 12:00 UTC the clock in MST reads 05:00 in January and 06:00 in July.
| UTC | MST in January | MST in July |
|---|---|---|
| 00:00 | 17:00 previous day | 18:00 previous day |
| 03:00 | 20:00 previous day | 21:00 previous day |
| 06:00 | 23:00 previous day | 00:00 |
| 09:00 | 02:00 | 03:00 |
| 12:00 | 05:00 | 06:00 |
| 15:00 | 08:00 | 09:00 |
| 18:00 | 11:00 | 12:00 |
| 21:00 | 14:00 | 15:00 |
When the clocks change in the MST zone
Clocks in the MST zone change twice a year for daylight saving time. Each row gives the date, the reading the clock shows as it changes, and what it jumps to.
| Date | Change | Clocks | New offset |
|---|---|---|---|
| Sunday, March 8, 2026 | Forward one hour | 02:00 to 03:00 | UTC-6 |
| Sunday, November 1, 2026 | Back one hour | 02:00 to 01:00 | UTC-7 |
| Sunday, March 14, 2027 | Forward one hour | 02:00 to 03:00 | UTC-6 |
| Sunday, November 7, 2027 | Back one hour | 02:00 to 01:00 | UTC-7 |
Computed from the IANA time zone database, the same source your operating system uses. Dates in future years follow the rules in force today; daylight saving law is set by governments and does change, sometimes at a few months' notice.
Cities that keep MST
These places run on MST: Mountain Time, the IANA zone behind MST. Each links to its own live clock.
Convert MST to another zone
MST to PSTMST to CSTMST to ESTMST to HSTMST to GMTMST to UTCMST to BSTMST to CET
Common questions about MST
What does MST stand for?
MST is Mountain Time, the civil time used in United States and Canada. On this site it resolves to the IANA time zone MST: Mountain Time, which is what your operating system and browser use to work out the actual offset on any given date.
What is MST in UTC?
MST is UTC-7 during the standard-time part of the year and UTC-6 while daylight saving is in effect. The table above converts every UTC hour both ways.