How to use this page
The top of the tool shows the current time and date in Denver. Under it you find the Abbreviation in use now (MST or MDT, with its full name), the UTC offset, the Next change with the date the clocks go forward or back, and Your time with the difference from your own zone.
To convert a specific time, enter it under Convert a time: a Time and a Date in Mountain Time. The list The same moment elsewhere then shows that moment in Pacific Time, Arizona, Central Time, Eastern Time, UTC, the UK and India, and in your own zone.
Mountain Standard Time and Mountain Daylight Time
Mountain Time follows the US and Canadian daylight saving rules. Clocks go forward from 2:00 MST to 3:00 MDT on the second Sunday in March and back from 2:00 MDT to 1:00 MST on the first Sunday in November. In 2026 MDT began on 8 March and ends on 1 November; in 2027 it runs from 14 March to 7 November.
Where Mountain Time is used
- Whole states: Colorado, Utah, Wyoming, Montana and New Mexico.
- Arizona: MST all year, except the Navajo Nation, which observes MDT in summer.
- Parts of states: southern Idaho, western South Dakota, western Nebraska, south-western North Dakota, a few western Kansas counties, the El Paso area of Texas and most of Malheur County in Oregon.
- Canada: Alberta, the Northwest Territories, western Nunavut and parts of eastern British Columbia.
- Mexico: Sonora keeps UTC−7 all year, like Arizona.
Conversion examples
| Mountain Time | Pacific | Arizona | Central | Eastern |
|---|---|---|---|---|
| 09:00 MST (January) | 08:00 PST | 09:00 MST | 10:00 CST | 11:00 EST |
| 09:00 MDT (July) | 08:00 PDT | 08:00 MST | 10:00 CDT | 11:00 EDT |
| 17:00 MDT (July) | 16:00 PDT | 16:00 MST | 18:00 CDT | 19:00 EDT |
In January, 09:00 MST is 16:00 UTC; in July, 09:00 MDT is 15:00 UTC. To compare more places at once, open the time zone converter or the world clock. For the dates of every clock change, see daylight saving time.