MST to GMT: MST is 6 hours behind GMT
Mountain Time is 6 hours behind Greenwich Mean Time right now. It is 8:43 am MDT in Mountain and 2:43 pm GMT in GMT.
Convert a specific time from MST to GMT
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between MST and GMT?
Greenwich Mean Time is 6 hours ahead of Mountain Time. To go from MST to GMT you add 6 hours. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 6 hours to 7 hours, because Mountain moves its clocks and GMT does not. This page recomputes it rather than assuming.
MST to GMT conversion table
Every hour of Friday, September 25, 2026 in Mountain, with the matching reading in GMT. 6 of the 24 hours land on a different calendar date in GMT, which is the part people get wrong when they schedule across this pair.
| MST | MST 24h | GMT | GMT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 6:00 am | 06:00 | same day |
| 1:00 am | 01:00 | 7:00 am | 07:00 | same day |
| 2:00 am | 02:00 | 8:00 am | 08:00 | same day |
| 3:00 am | 03:00 | 9:00 am | 09:00 | same day |
| 4:00 am | 04:00 | 10:00 am | 10:00 | same day |
| 5:00 am | 05:00 | 11:00 am | 11:00 | same day |
| 6:00 am | 06:00 | 12:00 pm | 12:00 | same day |
| 7:00 am | 07:00 | 1:00 pm | 13:00 | same day |
| 8:00 am | 08:00 | 2:00 pm | 14:00 | same day |
| 9:00 am | 09:00 | 3:00 pm | 15:00 | same day |
| 10:00 am | 10:00 | 4:00 pm | 16:00 | same day |
| 11:00 am | 11:00 | 5:00 pm | 17:00 | same day |
| 12:00 pm | 12:00 | 6:00 pm | 18:00 | same day |
| 1:00 pm | 13:00 | 7:00 pm | 19:00 | same day |
| 2:00 pm | 14:00 | 8:00 pm | 20:00 | same day |
| 3:00 pm | 15:00 | 9:00 pm | 21:00 | same day |
| 4:00 pm | 16:00 | 10:00 pm | 22:00 | same day |
| 5:00 pm | 17:00 | 11:00 pm | 23:00 | same day |
| 6:00 pm | 18:00 | 12:00 am | 00:00 | the next day |
| 7:00 pm | 19:00 | 1:00 am | 01:00 | the next day |
| 8:00 pm | 20:00 | 2:00 am | 02:00 | the next day |
| 9:00 pm | 21:00 | 3:00 am | 03:00 | the next day |
| 10:00 pm | 22:00 | 4:00 am | 04:00 | the next day |
| 11:00 pm | 23:00 | 5:00 am | 05:00 | the next day |
What are the best hours to schedule a call between MST and GMT?
2 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 9:00 am MST to 11:00 am MST. In GMT that window reads 3:00 pm to 5:00 pm. Outside it, one side is either not yet at their desk or already gone.
| MST | GMT | Working hours | Note |
|---|---|---|---|
| 9:00 am | 3:00 pm | both sides | mid morning in Mountain, afternoon in GMT |
| 10:00 am | 4:00 pm | both sides | mid morning in Mountain, afternoon in GMT |
Does daylight saving change MST to GMT?
Mountain Time is currently on MDT and changes next on Sunday, November 1, 2026, when the clock falls back from 1:59 am to 1:00 am and the offset moves from UTC-6 to UTC-7.
Greenwich Mean Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 6 hours and for the rest it is 7 hours. The table above is built for today, not for an average day.
Is MST ahead of or behind GMT?
MST is behind GMT by 6 hours: when it is 12:00 pm in Mountain, it is 6:00 pm in GMT. One wrinkle worth knowing: MST and MDT are two names for the same zone, not two zones. Mountain Time reads MST in winter and MDT in summer. When somebody types "mst to gmt" they nearly always mean the zone rather than the literal winter offset, so this page resolves MST to America/Denver and GMT to Etc/GMT and applies whichever offset is genuinely in force on the day.
Mountain Time covers Denver, Salt Lake City, Albuquerque and Calgary. Greenwich Mean Time covers identical to UTC as a clock reading, and a separate thing as a standard. The identifiers behind them are America/Denver and Etc/GMT, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is MST in GMT?
- MST is 6 hours behind GMT. 9:00 am MST is 3:00 pm GMT.
- How many hours ahead is GMT of MST?
- GMT is 6 hours ahead of MST. That varies across the year, between 6 hours and 7 hours.
- What time is it in GMT right now?
- 2:43 pm GMT on Friday, September 25, 2026.
- When can Mountain and GMT meet during working hours?
- Between 9:00 am and 11:00 am MST, which is 3:00 pm to 5:00 pm GMT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so MDT and GMT are the abbreviations genuinely in force today rather than a fixed assumption.
MST to GMT by the hour
Other conversions
12 and 24 hour converter · 8 hours from now · Today · Day counter