MST to Plymouth Time Converter
GMT is 7 hours ahead of MST. 9:00 AM MST = 4:00 PM GMT.
GMT is 7 hours ahead of MST at the moment. To convert MST to Plymouth Time, add 7 hours to the MST time: 9:00 AM MST = 4:00 PM GMT.
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. Plymouth Time (Plymouth time) is used in Plymouth, UK.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Plymouth Time time conversion table
MST to Plymouth Time on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Plymouth Time | Day |
|---|---|---|
| 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 | work hours |
| 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 | night |
| 4:00 PM MST | 11:00 PM GMT | night |
| 5:00 PM MST | 12:00 AM GMT | next day |
| 6:00 PM MST | 1:00 AM GMT | next day |
| 7:00 PM MST | 2:00 AM GMT | next day |
| 8:00 PM MST | 3:00 AM GMT | next day |
| 9:00 PM MST | 4:00 AM GMT | next day |
| 10:00 PM MST | 5:00 AM GMT | next day |
| 11:00 PM MST | 6:00 AM GMT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert MST to Plymouth Time
Add 7 hours to the MST time to get Plymouth Time.
Example: 9:00 AM MST = 4:00 PM GMT.
Across midnight: 10:00 PM MST = 5:00 AM GMT (next day). The date changes, so always check the day as well as the hour.
Time difference between MST and Plymouth Time
The time difference between MST and Plymouth Time 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:
- 31 Dec 2025 – 7 Mar 2026: Plymouth Time is 7 hours ahead of MST.
- 8 Mar 2026 – 27 Mar 2026: Plymouth Time is 6 hours ahead of MST.
- 28 Mar 2026 – 23 Oct 2026: Plymouth Time is 7 hours ahead of MST.
- 24 Oct 2026 – 31 Oct 2026: Plymouth Time is 6 hours ahead of MST.
- 1 Nov 2026 – 30 Dec 2026: Plymouth Time is 7 hours ahead of MST.
MST and Plymouth Time during daylight saving time
- 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).
- Plymouth 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).
Best time for a meeting between MST and Plymouth Time
MST and Plymouth Time share 1 hour of the 9 AM–5 PM working day. Any time between 9:00 AM and 10:00 AM MST lands between 4:00 PM and 5:00 PM GMT, inside working hours for both.
MST to Plymouth Time FAQ
What is the time difference between MST and Plymouth Time?
Right now GMT is 7 hours ahead of MST. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM MST in Plymouth Time?
9:00 AM MST is 4:00 PM GMT.
What is 12 PM (noon) MST in Plymouth Time?
12:00 PM MST is 7:00 PM GMT.
Is Plymouth Time ahead of or behind MST?
GMT is 7 hours ahead of MST, so it is later in Plymouth Time than in MST.
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.
Does Plymouth Time change for daylight saving time?
Yes. Plymouth Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
What is the best time for a meeting between MST and Plymouth Time?
MST and Plymouth Time share 1 hour of the 9 AM–5 PM working day. Any time between 9:00 AM and 10:00 AM MST lands between 4:00 PM and 5:00 PM GMT, 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 Plymouth Time to MST
Convert MST to other time zones
Convert other time zones to Plymouth Time
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.