MST to GMT
On Oct 23, 2026, UK time is 7 hours ahead of Mountain Time: 9:00 AM MDT is 4:00 PM BST. The gap changes during the year because of daylight saving time; the dates are below.
GMT vs MST over the next 12 months
| Period | GMT is | Example |
|---|---|---|
| Oct 23, 2026 to Oct 24, 2026 | 7 hours ahead | 9:00 AM MDT = 4:00 PM BST |
| Oct 24, 2026 to Nov 1, 2026 | 6 hours ahead | 9:00 AM MDT = 3:00 PM GMT |
| Nov 1, 2026 to Mar 14, 2027 | 7 hours ahead | 9:00 AM MST = 4:00 PM GMT |
| Mar 14, 2027 to Mar 27, 2027 | 6 hours ahead | 9:00 AM MDT = 3:00 PM GMT |
| Mar 27, 2027 onwards | 7 hours ahead | 9:00 AM MDT = 4:00 PM BST |
MST to GMT conversion table
Every hour of a weekday around Oct 23, 2026, in both zones.
| Mountain Time | UK time |
|---|---|
| 12:00 AM | 6:00 AM |
| 1:00 AM | 7:00 AM |
| 2:00 AM | 8:00 AM |
| 3:00 AM | 9:00 AM |
| 4:00 AM | 10:00 AM |
| 5:00 AM | 11:00 AM |
| 6:00 AM | 12:00 PM |
| 7:00 AM | 1:00 PM |
| 8:00 AM | 2:00 PM |
| 9:00 AM | 3:00 PM |
| 10:00 AM | 4:00 PM |
| 11:00 AM | 5:00 PM |
| 12:00 PM | 6:00 PM |
| 1:00 PM | 7:00 PM |
| 2:00 PM | 8:00 PM |
| 3:00 PM | 9:00 PM |
| 4:00 PM | 10:00 PM |
| 5:00 PM | 11:00 PM |
| 6:00 PM | 12:00 AM (next day) |
| 7:00 PM | 1:00 AM (next day) |
| 8:00 PM | 2:00 AM (next day) |
| 9:00 PM | 3:00 AM (next day) |
| 10:00 PM | 4:00 AM (next day) |
| 11:00 PM | 5:00 AM (next day) |
Best time for a meeting
Normal 9-to-5 working hours overlap for 2 hours on a weekday: 9:00 AM–11:00 AM MDT, which is 3:00 PM–5:00 PM GMT.
Comparing more than two places? The meeting planner lines up working hours for up to six cities.
Daylight saving time
Mountain Time (MST/MDT)
- Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−6 → UTC−7)
- Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−7 → UTC−6)
UK time (GMT/BST)
- Oct 25, 2026: clocks go back 1 hour at 2:00 AM (UTC+1 → UTC±0)
- Mar 28, 2027: clocks go forward 1 hour at 1:00 AM (UTC±0 → UTC+1)
Where these clocks are used
- Mountain Time (MST/MDT): Denver, Salt Lake City, Calgary. IANA zone
America/Denver. - UK time (GMT/BST): London, Edinburgh, Dublin and Lisbon keep the same clock. IANA zone
Europe/London.
Questions
What time is it in GMT when it is 9 AM MST?
On Oct 23, 2026, 9:00 AM MDT is 4:00 PM BST. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.
How many hours ahead of MST is GMT?
It depends on the date. Oct 23, 2026 to Oct 24, 2026: GMT is 7 hours ahead. Oct 24, 2026 to Nov 1, 2026: GMT is 6 hours ahead. Nov 1, 2026 to Mar 14, 2027: GMT is 7 hours ahead. Mar 14, 2027 to Mar 27, 2027: GMT is 6 hours ahead. Mar 27, 2027 onwards: GMT is 7 hours ahead.
Do MST and GMT observe daylight saving time?
Mountain Time switches to MDT (UTC−6) in summer and back to MST (UTC−7) in winter. UK time switches to BST (UTC+1) in summer and back to GMT (UTC±0) in winter.
What is the best time for a meeting between MST and GMT?
Normal 9-to-5 working hours overlap for 2 hours on a weekday: 9:00 AM–11:00 AM MDT, which is 3:00 PM–5:00 PM GMT.
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Related conversions
- GMT to MST (reverse)
- EST to GMT
- CST to GMT
- MST to EST
- MST to CST
- MST to PST
- MST to UTC
- MST to CET
- MST to IST
- MST to SGT
- MST to JST
- MST to AEST
- All time zones
Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.