MST to U Converter
Mountain Time is on daylight saving time: MDT (UTC−6) until Sun, Nov 1.
Arizona stays on MST (UTC−7).
Quick answers
Selected conversion
6:00 am06:00 MDT (UTC-6), Oct 12, 2026 = 4:00 am04:00 U (UTC-8), Oct 12, 2026
MDT is 2 hours ahead of U.
MST and U examples
These examples always use MST (UTC-7) and U (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
MST is 1 hour ahead of U.
How the time difference changes
For most of the year, MDT is 2 hours ahead of U. At other times of the year, MST is 1 hour ahead of U.
For most of the year, working hours of 9:00 am to 5:00 pm in MDT correspond to 7:00 am to 3:00 pm in U. At other times of the year, working hours of 9:00 am to 5:00 pm in MST correspond to 8:00 am to 4:00 pm in U.For most of the year, working hours of 09:00 to 17:00 in MDT correspond to 07:00 to 15:00 in U. At other times of the year, working hours of 09:00 to 17:00 in MST correspond to 08:00 to 16:00 in U.
Compare MST time with U time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Mountain Daylight Time is 2 hours ahead of Uniform Time Zone.
6:00 am06:00 in MDT is 4:00 am04:00 in U
MDT to U call time
Best time for a conference call or a meeting is between 11am-5pm11:00-17:00 in MDT which corresponds to 9am-3pm09:00-15:00 in U
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
4:00 am04:00 Uniform Time Zone (U). Offset UTC -8:00 hours
6:00 am06:00 MDT / 4:00 am04:00 U
| MDT | U |
|---|---|
| 12:00am | 10:00pm |
| 1:00am | 11:00pm |
| 2:00am | 12:00am |
| 3:00am | 1:00am |
| 4:00am | 2:00am |
| 5:00am | 3:00am |
| 6:00am | 4:00am |
| 7:00am | 5:00am |
| 8:00am | 6:00am |
| 9:00am | 7:00am |
| 10:00am | 8:00am |
| 11:00am | 9:00am |
| 12:00pm | 10:00am |
| 1:00pm | 11:00am |
| 2:00pm | 12:00pm |
| 3:00pm | 1:00pm |
| 4:00pm | 2:00pm |
| 5:00pm | 3:00pm |
| 6:00pm | 4:00pm |
| 7:00pm | 5:00pm |
| 8:00pm | 6:00pm |
| 9:00pm | 7:00pm |
| 10:00pm | 8:00pm |
| 11:00pm | 9:00pm |
| 00:00 | 22:00 |
| 01:00 | 23:00 |
| 02:00 | 00:00 |
| 03:00 | 01:00 |
| 04:00 | 02:00 |
| 05:00 | 03:00 |
| 06:00 | 04:00 |
| 07:00 | 05:00 |
| 08:00 | 06:00 |
| 09:00 | 07:00 |
| 10:00 | 08:00 |
| 11:00 | 09:00 |
| 12:00 | 10:00 |
| 13:00 | 11:00 |
| 14:00 | 12:00 |
| 15:00 | 13:00 |
| 16:00 | 14:00 |
| 17:00 | 15:00 |
| 18:00 | 16:00 |
| 19:00 | 17:00 |
| 20:00 | 18:00 |
| 21:00 | 19:00 |
| 22:00 | 20:00 |
| 23:00 | 21:00 |
Mountain Standard Time
Offset: MST is 7 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the MST time zone is Phoenix in the United States, with about 1.65 million people. Other major cities in this time zone include Calgary, Edmonton, Hermosillo, Culiacan.
French: HNR - Heure Normale des Rocheuses
Spanish: MT - Zona Pacífico
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Mountain Daylight Time (MDT).
End: Mountain Standard Time (MST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Mountain Standard Time (MST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
MST representations, usage and related time zones
- -07 - basic short
- -0700 - basic
- -07:00 - extended
- -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
- Tango - Military abbreviation for MST
- T - short form of 'Tango'
- America/Boise
- America/Cambridge_Bay
- America/Ciudad_Juarez
- America/Creston
- America/Dawson
- America/Dawson_Creek
- America/Denver
- America/Edmonton
- America/Fort_Nelson
- America/Hermosillo
- America/Inuvik
- America/Mazatlan
- America/Phoenix
- America/Shiprock
- America/Whitehorse
- America/Yellowknife
- Canada/Mountain
- Canada/Yukon
- MST
- MST7MDT
- Mexico/BajaSur
- Navajo
- US/Arizona
- US/Mountain
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango Time Zone
Uniform Time Zone
Offset: U is 8 hours behind Greenwich Mean Time (GMT) and is used in Military
Daylight Saving: Clocks in Uniform Time Zone (U) do not change for daylight saving time, so U stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
U representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
- Uniform - Military abbreviation for U
- U - short form of 'Uniform'
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone