MST to Cardiff 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 Cardiff 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. Cardiff Time (Cardiff time) is used in Cardiff, UK.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Cardiff Time time conversion table
MST to Cardiff Time on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Cardiff 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 Cardiff Time
Add 7 hours to the MST time to get Cardiff 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 Cardiff Time
The time difference between MST and Cardiff 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: Cardiff Time is 7 hours ahead of MST.
- 8 Mar 2026 – 27 Mar 2026: Cardiff Time is 6 hours ahead of MST.
- 28 Mar 2026 – 23 Oct 2026: Cardiff Time is 7 hours ahead of MST.
- 24 Oct 2026 – 31 Oct 2026: Cardiff Time is 6 hours ahead of MST.
- 1 Nov 2026 – 30 Dec 2026: Cardiff Time is 7 hours ahead of MST.
MST and Cardiff 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).
- Cardiff 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 Cardiff Time
MST and Cardiff 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 Cardiff Time FAQ
What is the time difference between MST and Cardiff 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 Cardiff Time?
9:00 AM MST is 4:00 PM GMT.
What is 12 PM (noon) MST in Cardiff Time?
12:00 PM MST is 7:00 PM GMT.
Is Cardiff Time ahead of or behind MST?
GMT is 7 hours ahead of MST, so it is later in Cardiff 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 Cardiff Time change for daylight saving time?
Yes. Cardiff 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 Cardiff Time?
MST and Cardiff 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 Cardiff Time to MST
Convert MST to other time zones
Convert other time zones to Cardiff Time
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.