MST Time Now: Current Mountain Time

MST or MDT?

In winter Denver runs on MST, UTC−7. On the second Sunday in March the clocks spring forward to MDT, and on the first Sunday in November they fall back again.

Invitations often say MST even in summer. Between March 8 and November 1, 2026, the right label is MDT.

Where Mountain Time is used

Colorado, Montana, New Mexico, Utah and Wyoming use Mountain Time. So do southern Idaho and the El Paso area of Texas. The western edges of Kansas, Nebraska, North Dakota and South Dakota are on it too. In Canada, Alberta uses it. Arizona is also on Mountain Standard Time, but it does not change its clocks.

Good to know

Mountain Time is the smallest of the four mainland US zones by population. Denver is its largest city, and Phoenix shares its clock only in winter.

Winter and summer gaps

January and July give the same gaps. For two or three weeks in March and about a week around the start of November they are an hour different, since the US moves its clocks on its own Sundays, not on Europe's.

Office hours that overlap

Denver shares six hours with New York and one hour with London. Calls to New York and London fit best first thing in the morning.

Mountain Time against other zones

Here is the time in each zone at noon in Denver today. Anything marked next day has already passed midnight there.

Convert MST to another zone

To line up more than two places, try the time zone converter and meeting planner.

Related pages

• The time now in every zone
• When do the clocks go back?
• When do the clocks go forward?
• Military time converter