Mountain Time Zone in the United States
The Mountain Standard Time Zone, includes that part of the United States that is west of the boundary line between the central and mountain standard time zones (view) and east of the boundary line between the mountain and Pacific standard time zones (view).
The Mountain Time Zone includes the states of Arizona*, Colorado, part of Idaho, part of Kansas, Montana, part of Nebraska, New Mexico, part of North Dakota, part of Oregon, part of South Dakota, part of Texas, Utah, and Wyoming.
Most of Arizona does not observe daylight saving time. The Navajo Indian Nation in northeastern Arizona does observe daylight saving time.
Five states are in both the Mountain and Central Time Zones. Those are Kansas, Nebraska, North Dakota, South Dakota and Texas. View the boundary line between Central and Mountain Time Zones.
Current Local Time |
Mountain Time Zone Map |
| The Current Time in The Mountain Time Zone is: Thursday 11/21/2024 2:08 AM MST |
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Mountain Time Zone in the United States Time Details |
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Time Zone
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Mountain Standard Time - is abbreviated as MST Mountain Daylight Time - is abbreviated as MDT |
UTC - GMT
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Mountain Time Zone is GMT/UTC - 7h during Standard Time Mountain Time Zone is GMT/UTC - 6h during Daylight Saving Time |
Daylight Saving
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Daylight Saving Time is observed in the Mountain Time Zone throughout the United States except in the state of Arizona. Daylight saving time is observed in the Navajo Nation in northeastern Arizona. |
Daylight Saving
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Mountain Time Zone starts Daylight Saving Time |
Daylight Saving
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Mountain Time Zone ends Daylight Saving Time |
Time Zone Boundaries in the United States
| CODE | UNITED STATES TIME ZONE BOUNDARIES | UTC OFFSET |
| AST | ATLANTIC STANDARD TIME | UTC - 4 |
| EST | EASTERN STANDARD TIME | UTC - 5 |
| CST | CENTRAL STANDARD TIME | UTC - 6 |
| MST | MOUNTAIN STANDARD TIME | UTC - 7 |
| PST | PACIFIC STANDARD TIME | UTC - 8 |
| AKST | ALASKA STANDARD TIME | UTC - 9 |
| HAST | HAWAII-ALEUTIAN STANDARD TIME | UTC - 10 |
| WST | SAMOA STANDARD TIME | UTC - 11 |
| CHST | CHAMORRO STANDARD TIME | UTC +10 |