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Mountain Time Now (MT)

The current Mountain time — and how Arizona differs from the rest of the zone.

Mountain Time runs at UTC−07:00 as MST and UTC−06:00 as MDT during daylight saving. It covers Colorado, Utah, most of Idaho and Montana, New Mexico, Wyoming and Arizona — though Arizona is the zone's famous exception, because it never moves its clocks.

Arizona, the standing exception

Arizona stays on MST all year, so it matches Denver in winter and Los Angeles in summer. The Navajo Nation within Arizona does observe daylight saving, producing one of the more confusing maps in American timekeeping — see states that don't observe daylight saving.

More ustime.now pages

US Time Now The current time in all six US time zones at once, with offsets and dates. Eastern Time The current Eastern time, whether that is EST or EDT right now. Central Time The current Central time, covering the middle third of the country. Pacific Time The current Pacific time, three hours behind the east coast. Alaska & Hawaii Time The current time in Alaska and Hawaii — the two zones people forget when scheduling. Daylight Saving Dates When the clocks next change, calculated from the current federal rule.

Frequently asked questions

Is Arizona on Mountain time?
Arizona sits in the Mountain zone but does not observe daylight saving, so for half the year its clock matches Pacific time instead.
What is the difference between MST and MDT?
MST is UTC−07:00 and applies in winter; MDT is UTC−06:00 and applies during daylight saving.