GMT to MST converter

Greenwich Mean Time (the same as UTC, all year) to Mountain Time (Denver, Salt Lake City, Calgary).

GMT12:07 AMSat 31 Oct 2026

→

MST6:07 PMFri 30 Oct 2026

MST is 6 h behind GMT.

Pick a time in GMT

⇄ MST to GMT

9:00 AM GMT = 3:00 AM MST same day

Best time to meet

The best time to meet is between 3:00 PM and 5:00 PM GMT, which is 9:00 AM to 11:00 AM MST. Both sides are then inside 9 AM to 5 PM.

GMT to MST time table

For 31 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

GMT	MST
12:00 AM GMT	6:00 PM MST previous day
1:00 AM GMT	7:00 PM MST previous day
2:00 AM GMT	8:00 PM MST previous day
3:00 AM GMT	9:00 PM MST previous day
4:00 AM GMT	10:00 PM MST previous day
5:00 AM GMT	11:00 PM MST previous day
6:00 AM GMT	12:00 AM MST
7:00 AM GMT	1:00 AM MST
8:00 AM GMT	2:00 AM MST
9:00 AM GMT	3:00 AM MST
10:00 AM GMT	4:00 AM MST
11:00 AM GMT	5:00 AM MST
12:00 PM GMT	6:00 AM MST
1:00 PM GMT	7:00 AM MST
2:00 PM GMT	8:00 AM MST
3:00 PM GMT	9:00 AM MST
4:00 PM GMT	10:00 AM MST
5:00 PM GMT	11:00 AM MST
6:00 PM GMT	12:00 PM MST
7:00 PM GMT	1:00 PM MST
8:00 PM GMT	2:00 PM MST
9:00 PM GMT	3:00 PM MST
10:00 PM GMT	4:00 PM MST
11:00 PM GMT	5:00 PM MST

Quick answers

9:00 AM GMT = 3:00 AM MST
12:00 PM GMT = 6:00 AM MST
3:00 PM GMT = 9:00 AM MST
5:00 PM GMT = 11:00 AM MST
9:00 AM MST = 3:00 PM GMT
12:00 PM MST = 6:00 PM GMT
5:00 PM MST = 11:00 PM GMT

Does the gap change during the year?

Yes, because of daylight saving. Until 1 Nov 2026: MST is 6 h behind GMT. From 1 Nov 2026 to 14 Mar 2027: MST is 7 h behind GMT. From 14 Mar 2027 to 7 Nov 2027: MST is 6 h behind GMT.

GMT does not change its clocks. MST next changes its clocks on 1 Nov 2026 (back 1 h, to UTC−7), then on 14 Mar 2027 (forward 1 h, to UTC−6).

About GMT and MST

GMT here means Greenwich Mean Time, the clock in the same as UTC, all year. Right now it is UTC+0. It has no daylight saving.

MST here means Mountain Time, the clock in Denver, Salt Lake City, Calgary. Right now it is UTC−6. Strictly, MST is the winter name; in summer these places use MDT. This page follows their real clock all year.

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