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DateAlmanac

What is GST in MST?

Mountain Time is 11 hours behind

Gulf Standard Time is on UTC+4:00 and Mountain Time is on UTC−7:00 right now. The gap changes during the year — see below.

Convert a time

MST — Mountain Time

1:00 am

MST, Sat

Time in Dubai
12:29:55 PM
Time in Denver
1:29:55 AM
Difference
−11 h
Next clock change
March 14, 2027

When the difference changes

Gulf Standard Time and Mountain Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – March 14, 2027Mountain Time is 11 hours behind
  2. March 14, 2027 – November 7, 2027Mountain Time is 10 hours behind
  3. November 7, 2027 – onwardsMountain Time is 11 hours behind

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Gulf Standard Time

No clock changes

Gulf Standard Time stays on GST all year, so its offset from UTC never moves.

Mountain Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on MDT after that.

GST to MST conversion table

Every hour of Saturday, November 7, 2026, converted from Gulf Standard Time to Mountain Time. 11 of the 24 hours fall on a different calendar day in Denver, which is marked.

12:00 am GST
1:00 pm MST−1 day
1:00 am GST
2:00 pm MST−1 day
2:00 am GST
3:00 pm MST−1 day
3:00 am GST
4:00 pm MST−1 day
4:00 am GST
5:00 pm MST−1 day
5:00 am GST
6:00 pm MST−1 day
6:00 am GST
7:00 pm MST−1 day
7:00 am GST
8:00 pm MST−1 day
8:00 am GST
9:00 pm MST−1 day
9:00 am GST
10:00 pm MST−1 day
10:00 am GST
11:00 pm MST−1 day
11:00 am GST
12:00 am MST
12:00 pm GST
1:00 am MST
1:00 pm GST
2:00 am MST
2:00 pm GST
3:00 am MST
3:00 pm GST
4:00 am MST
4:00 pm GST
5:00 am MST
5:00 pm GST
6:00 am MST
6:00 pm GST
7:00 am MST
7:00 pm GST
8:00 am MST
8:00 pm GST
9:00 am MST
9:00 pm GST
10:00 am MST
10:00 pm GST
11:00 am MST
11:00 pm GST
12:00 pm MST

Scheduling between the two

There is no overlap between a nine-to-six working day in Dubai and one in Denver — the gap is too wide. A call has to sit early or late for one side. Early morning in Dubai is the usual compromise, since that is late afternoon or evening in Denver.

Gulf Standard Time (GST) is used in the UAE and Oman

Mountain Time (MST) is used in Salt Lake City, Albuquerque and Calgary. Arizona keeps MST all year and does not follow MDT.

Other conversions