MST time now
MST has several regional meanings. Compare the current time, UTC offset and IANA rule set before scheduling.
What MST can mean
Current abbreviations and offsets are calculated for this instant. A regional zone may be in a different seasonal phase today.
Mountain Standard Time
North AmericaMountain Time
North AmericaArizona Time
Arizona, United States| Meaning | Current abbreviation | UTC offset | Rule set | Notes |
|---|---|---|---|---|
| Mountain Standard Time North America | Mountain Standard Time | UTC-07:00 | Fixed offset | A fixed UTC-07:00 offset; Arizona commonly remains on this offset year-round. |
| Mountain Time North America | MDT | UTC-06:00 | America/Denver | A regional zone that alternates between MST and MDT where daylight saving time is observed. |
| Arizona Time Arizona, United States | MST | UTC-07:00 | America/Phoenix | Most of Arizona uses UTC-07:00 throughout the year. |
Regional meanings of MST
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Time zone converter
Convert historical, current or future wall times between cities, IANA zones and UTC offsets.
MST time-zone questions
What does MST mean?
On this page MST can refer to Mountain Standard Time, Mountain Time, Arizona Time. The intended meaning depends on the region and date.
Is MST a unique time zone?
No.
Can the UTC offset for MST change?
A fixed abbreviation entry has a fixed offset, but a geographic regional time zone can switch abbreviations or offsets under daylight-saving rules.
What should I enter in the time converter?
Use a city or an IANA time-zone identifier when an abbreviation is ambiguous. This avoids silently choosing the wrong region.
