Southampton Time to MST Converter
MST is 7 hours behind GMT. 9:00 AM GMT = 2:00 AM MST.
MST is 7 hours behind GMT at the moment. To convert Southampton Time to MST, subtract 7 hours from the Southampton Time time: 9:00 AM GMT = 2:00 AM MST.
Southampton Time (Southampton time) is used in Southampton, UK. MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year.
Most of Arizona uses MST all year and does not switch to MDT.
Southampton Time to MST time conversion table
Southampton Time to MST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Southampton Time | MST | Day |
|---|---|---|
| 12:00 AM GMT | 5:00 PM MST | previous day |
| 1:00 AM GMT | 6:00 PM MST | previous day |
| 2:00 AM GMT | 7:00 PM MST | previous day |
| 3:00 AM GMT | 8:00 PM MST | previous day |
| 4:00 AM GMT | 9:00 PM MST | previous day |
| 5:00 AM GMT | 10:00 PM MST | previous day |
| 6:00 AM GMT | 11:00 PM MST | previous day |
| 7:00 AM GMT | 12:00 AM MST | night |
| 8:00 AM GMT | 1:00 AM MST | night |
| 9:00 AM GMT | 2:00 AM MST | night |
| 10:00 AM GMT | 3:00 AM MST | night |
| 11:00 AM GMT | 4:00 AM MST | night |
| 12:00 PM GMT | 5:00 AM MST | night |
| 1:00 PM GMT | 6:00 AM MST | — |
| 2:00 PM GMT | 7:00 AM MST | — |
| 3:00 PM GMT | 8:00 AM MST | — |
| 4:00 PM GMT | 9:00 AM MST | work hours |
| 5:00 PM GMT | 10:00 AM MST | — |
| 6:00 PM GMT | 11:00 AM MST | — |
| 7:00 PM GMT | 12:00 PM MST | — |
| 8:00 PM GMT | 1:00 PM MST | — |
| 9:00 PM GMT | 2:00 PM MST | — |
| 10:00 PM GMT | 3:00 PM MST | — |
| 11:00 PM GMT | 4:00 PM MST | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Southampton Time to MST
Subtract 7 hours from the Southampton Time time to get MST.
Example: 9:00 AM GMT = 2:00 AM MST.
Across midnight: 1:00 AM GMT = 6:00 PM MST (previous day). The date changes, so always check the day as well as the hour.
Time difference between Southampton Time and MST
The time difference between Southampton Time and MST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: MST is 7 hours behind of Southampton Time.
- 8 Mar 2026 – 28 Mar 2026: MST is 6 hours behind of Southampton Time.
- 29 Mar 2026 – 24 Oct 2026: MST is 7 hours behind of Southampton Time.
- 25 Oct 2026 – 31 Oct 2026: MST is 6 hours behind of Southampton Time.
- 1 Nov 2026 – 31 Dec 2026: MST is 7 hours behind of Southampton Time.
Southampton Time and MST during daylight saving time
- Southampton Time next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- MST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from MST (UTC−7) to MDT (UTC−6).
Best time for a meeting between Southampton Time and MST
Southampton Time and MST share 1 hour of the 9 AM–5 PM working day. Any time between 4:00 PM and 5:00 PM GMT lands between 9:00 AM and 10:00 AM MST, inside working hours for both.
Southampton Time to MST FAQ
What is the time difference between Southampton Time and MST?
Right now MST is 7 hours behind GMT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Southampton Time in MST?
9:00 AM GMT is 2:00 AM MST.
What is 12 PM (noon) Southampton Time in MST?
12:00 PM GMT is 5:00 AM MST.
Is MST ahead of or behind Southampton Time?
MST is 7 hours behind GMT, so it is earlier in MST than in Southampton Time.
Does Southampton Time change for daylight saving time?
Yes. Southampton Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does MST change for daylight saving time?
Yes. MST next changes on 14 Mar 2027, when clocks go forward one hour from MST to MDT.
What is the best time for a meeting between Southampton Time and MST?
Southampton Time and MST share 1 hour of the 9 AM–5 PM working day. Any time between 4:00 PM and 5:00 PM GMT lands between 9:00 AM and 10:00 AM MST, inside working hours for both.
Is MT the same as MST?
MST is the winter (standard) name of Mountain Time (MT). From March to November the same clocks are called MDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert MST to Southampton Time
Convert Southampton Time to other time zones
Convert other time zones to MST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.