World Clock
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MST and MDT — US Mountain Time

The live current time in US Mountain Time, and what the abbreviation actually means. MST and MDT are the winter and summer halves of the same zone, which is why a bare MST label is ambiguous for half the year.

MST is Mountain Standard Time, UTC−7. MDT is Mountain Daylight Time, UTC−6. US Mountain Time uses MST in winter and MDT in summer, switching on the second Sunday in March and the first Sunday in November.

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ISO week {{ pageWeek.week }} of {{ pageWeek.year }}
The sun does not set today.
The sun does not rise today.
Solar Noon
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Daylight Saving

Your time zone does not currently observe daylight saving time, so its offset from UTC stays the same all year round.

Time Difference

Common Timezones

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Time Converter

Showing a shared time. The clock above is still live.

Pick a valid date and time to convert.

Showing {{ convertSourceTime }} on {{ convertSourceDate }} in every timezone below.

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Meeting Planner

Your day, hour by hour, in every zone on your list. Pick a column where nobody is asleep.

Working hours 9:00–18:00 Awake, off the clock Asleep 23:00–7:00
Local Hour
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Timezone Search

City Timezone Current Time Action
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Contact Us

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