Home › Time zones › Mountain Time

Mountain Time (MST / MDT)

Mountain Time is UTC−7 in winter (Mountain Standard Time) and UTC−6 in summer (Mountain Daylight Time). Alberta used it until 2026; it now stays at UTC−6 all year.

Right now on Mountain Time
–
 
MST / MDT · UTC−7 in winter, UTC−6 in summer

Key facts

Full nameMountain Time
CodeMST / MDT
UTC offsetUTC−7 in winter, UTC−6 in summer
Daylight savingYes

MST in winter, MDT in summer.

When the clocks change

Clocks go forward one hour at 2 AM on the second Sunday in March and back one hour at 2 AM on the first Sunday in November.

DateChangeNew offset
Mar 14, 2027Clocks go forward 1 hourUTC−6
Nov 7, 2027Clocks go back 1 hourUTC−7

Where it's used

One step west and east

Same time in winter

Questions

What is Mountain Time?

Mountain Time is UTC−7 in winter (Mountain Standard Time) and UTC−6 in summer (Mountain Daylight Time). Alberta used it until 2026; it now stays at UTC−6 all year.

What is the Mountain Time code?

MST in winter, MDT in summer.

Does Mountain Time change for daylight saving time?

Yes. Clocks go forward one hour at 2 AM on the second Sunday in March and back one hour at 2 AM on the first Sunday in November. The next changes are Mar 14, 2027 and Nov 7, 2027.

What is the difference between Mountain Time and Pacific Time?

Pacific Time is 1 hour behind Mountain Time all year.

What is the difference between Mountain Time and Alberta Time?

Alberta Time is 1 hour ahead of Mountain Time in winter and the same time in summer.

What is the difference between Mountain Time and Central Standard Time (Saskatchewan)?

Central Standard Time (Saskatchewan) is 1 hour ahead of Mountain Time in winter and the same time in summer.

What is the difference between Mountain Time and Central Time?

Central Time is 1 hour ahead of Mountain Time all year.