What is MST in GST?
Gulf Standard Time is 10 hours ahead
Mountain Time is on UTC−6:00 and Gulf Standard Time is on UTC+4:00 right now. Mountain Time is on daylight saving, so its clocks read MDT. The gap changes during the year — see below.
- Time in Denver
- 8:56 pm
- Time in Dubai
- 6:56 am
- Difference
- +10 h
- Next clock change
- November 1, 2026
Convert a time
GST — Gulf Standard Time
6:00 am
Wed, the next day
When the difference changes
Mountain Time and Gulf Standard 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:
- Now – November 1, 2026Gulf Standard Time is 10 hours ahead
- November 1, 2026 – March 14, 2027Gulf Standard Time is 11 hours ahead
- March 14, 2027 – onwardsGulf Standard Time is 10 hours ahead
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Mountain Time
Clocks go back one hour at 2am local time, becoming MST.
Gulf Standard Time
Gulf Standard Time stays on GST all year, so its offset from UTC never moves.
MST to GST conversion table
Every hour of Tuesday, September 22, 2026, converted from Mountain Time to Gulf Standard Time. 10 of the 24 hours fall on a different calendar day in Dubai, which is marked.
- 12:00 am MDT
- 10:00 am GST
- 1:00 am MDT
- 11:00 am GST
- 2:00 am MDT
- 12:00 pm GST
- 3:00 am MDT
- 1:00 pm GST
- 4:00 am MDT
- 2:00 pm GST
- 5:00 am MDT
- 3:00 pm GST
- 6:00 am MDT
- 4:00 pm GST
- 7:00 am MDT
- 5:00 pm GST
- 8:00 am MDT
- 6:00 pm GST
- 9:00 am MDT
- 7:00 pm GST
- 10:00 am MDT
- 8:00 pm GST
- 11:00 am MDT
- 9:00 pm GST
- 12:00 pm MDT
- 10:00 pm GST
- 1:00 pm MDT
- 11:00 pm GST
- 2:00 pm MDT
- 12:00 am GST+1 day
- 3:00 pm MDT
- 1:00 am GST+1 day
- 4:00 pm MDT
- 2:00 am GST+1 day
- 5:00 pm MDT
- 3:00 am GST+1 day
- 6:00 pm MDT
- 4:00 am GST+1 day
- 7:00 pm MDT
- 5:00 am GST+1 day
- 8:00 pm MDT
- 6:00 am GST+1 day
- 9:00 pm MDT
- 7:00 am GST+1 day
- 10:00 pm MDT
- 8:00 am GST+1 day
- 11:00 pm MDT
- 9:00 am GST+1 day
Scheduling between the two
There is no overlap between a nine-to-six working day in Denver and one in Dubai — the gap is too wide. A call has to sit early or late for one side. Early morning in Denver is the usual compromise, since that is late afternoon or evening in Dubai.
Mountain Time (MDT) is used in Salt Lake City, Albuquerque and Calgary. Arizona keeps MST all year and does not follow MDT.
Gulf Standard Time (GST) is used in the UAE and Oman