MST to Calgary Time Converter
MDT is 1 hour ahead of MST. 9:00 AM MST = 10:00 AM MDT.
MDT is 1 hour ahead of MST at the moment. To convert MST to Calgary Time, add 1 hour to the MST time: 9:00 AM MST = 10:00 AM MDT.
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. Calgary Time (Calgary time) is used in Calgary, Canada.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Calgary Time time conversion table
MST to Calgary Time on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Calgary Time | Day |
|---|---|---|
| 12:00 AM MST | 1:00 AM MDT | night |
| 1:00 AM MST | 2:00 AM MDT | night |
| 2:00 AM MST | 3:00 AM MDT | night |
| 3:00 AM MST | 4:00 AM MDT | night |
| 4:00 AM MST | 5:00 AM MDT | night |
| 5:00 AM MST | 6:00 AM MDT | — |
| 6:00 AM MST | 7:00 AM MDT | — |
| 7:00 AM MST | 8:00 AM MDT | — |
| 8:00 AM MST | 9:00 AM MDT | — |
| 9:00 AM MST | 10:00 AM MDT | work hours |
| 10:00 AM MST | 11:00 AM MDT | work hours |
| 11:00 AM MST | 12:00 PM MDT | work hours |
| 12:00 PM MST | 1:00 PM MDT | work hours |
| 1:00 PM MST | 2:00 PM MDT | work hours |
| 2:00 PM MST | 3:00 PM MDT | work hours |
| 3:00 PM MST | 4:00 PM MDT | work hours |
| 4:00 PM MST | 5:00 PM MDT | — |
| 5:00 PM MST | 6:00 PM MDT | — |
| 6:00 PM MST | 7:00 PM MDT | — |
| 7:00 PM MST | 8:00 PM MDT | — |
| 8:00 PM MST | 9:00 PM MDT | — |
| 9:00 PM MST | 10:00 PM MDT | night |
| 10:00 PM MST | 11:00 PM MDT | night |
| 11:00 PM MST | 12:00 AM MDT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert MST to Calgary Time
Add 1 hour to the MST time to get Calgary Time.
Example: 9:00 AM MST = 10:00 AM MDT.
Across midnight: 11:00 PM MST = 12:00 AM MDT (next day). The date changes, so always check the day as well as the hour.
Time difference between MST and Calgary Time
The time difference between MST and Calgary 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 – 31 Oct 2026: Calgary Time and MST are on the same time.
- 1 Nov 2026 – 30 Dec 2026: Calgary Time is 1 hour ahead of MST.
MST and Calgary 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).
- Calgary Time does not observe daylight saving time; it stays on UTC−6 all year.
Best time for a meeting between MST and Calgary Time
MST and Calgary Time share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM MST lands between 10:00 AM and 5:00 PM MDT, inside working hours for both.
MST to Calgary Time FAQ
What is the time difference between MST and Calgary Time?
Right now MDT is 1 hour ahead of MST. The gap changes 2 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM MST in Calgary Time?
9:00 AM MST is 10:00 AM MDT.
What is 12 PM (noon) MST in Calgary Time?
12:00 PM MST is 1:00 PM MDT.
Is Calgary Time ahead of or behind MST?
MDT is 1 hour ahead of MST, so it is later in Calgary 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 Calgary Time change for daylight saving time?
No. Calgary Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between MST and Calgary Time?
MST and Calgary Time share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM MST lands between 10:00 AM and 5:00 PM MDT, 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 Calgary Time to MST
Convert MST to other time zones
Convert other time zones to Calgary Time
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.