MST (Mountain Standard Time) is UTC−7. It is the standard time of Denver, Phoenix, Hermosillo and Vancouver, which switch to MDT for daylight saving time.
Where and when MST is used
| IANA time zone | Uses MST | Main cities |
|---|---|---|
| America/Denver | Outside daylight saving time | Denver, El Paso, Albuquerque |
| America/Phoenix | All year | Phoenix, Tucson, Mesa |
| America/Hermosillo | All year | Hermosillo, Ciudad Obregón, Nogales |
| America/Vancouver | All year | Vancouver, Surrey, Victoria |
MST and MDT
MDT is the daylight saving version of MST, 1 hour ahead of it. Writing MST in summer means a time that is 1 hour off for the places that have switched.
MST to UTC, GMT and other zones
Because MST always means UTC−7, each row below is a fixed difference. Check the date only to know whether a place is on MST at all.
| Zone | UTC offset | When it is 12:00 MST |
|---|---|---|
| UTC | UTC+0 | 7:00 PM |
| GMT | UTC+0 | 7:00 PM |
| EST | UTC−5 | 2:00 PM |
| EDT | UTC−4 | 3:00 PM |
| CST | UTC−6 | 1:00 PM |
| PST | UTC−8 | 11:00 AM |
| CET | UTC+1 | 8:00 PM |
| CEST | UTC+2 | 9:00 PM |
| EET | UTC+2 | 9:00 PM |
| MSK | UTC+3 | 10:00 PM |
| GST | UTC+4 | 11:00 PM |
| IST | UTC+5:30 | 12:30 AM (next day) |
| ICT | UTC+7 | 2:00 AM (next day) |
| JST | UTC+9 | 4:00 AM (next day) |
| AEST | UTC+10 | 5:00 AM (next day) |
| AEDT | UTC+11 | 6:00 AM (next day) |
Plan around the time in MST
- Convert a time to or from MST: pick a date and time and see it in every city on your list.
- Add Denver to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in MST and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What is MST in UTC?
MST is UTC−7. To get UTC, add 7 hours to MST time.
Is it MST or MDT right now?
MST is in use now in Denver, Phoenix, Hermosillo and Vancouver. MDT returns on Sunday, March 14, 2027.
What time is 12:00 MST in UTC?
12:00 MST is 7:00 PM UTC.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.