PST is 1 hour behind MST all year. So 12:00 PM MDT = 11:00 AM PDT. (Mountain Time is on MDT and Pacific Time is on PDT for daylight saving time right now.)
MST to PST conversion table
| MST / MDT | PST / PDT |
|---|---|
| 12:00 AM | 11:00 PM −1 day |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
MST and PST difference through 2027
The gap between the two zones on each date range, including daylight saving time changes:
| Dates | Mountain Time | Pacific Time | Difference |
|---|---|---|---|
| Sep 30, 2026 – Oct 31, 2026 | MDT (UTC−6) | PDT (UTC−7) | PST 1 hour behind |
| Nov 1, 2026 – Mar 13, 2027 | MST (UTC−7) | PST (UTC−8) | PST 1 hour behind |
| Mar 14, 2027 – Nov 6, 2027 | MDT (UTC−6) | PDT (UTC−7) | PST 1 hour behind |
| Nov 7, 2027 – Dec 31, 2027 | MST (UTC−7) | PST (UTC−8) | PST 1 hour behind |
Best time to meet or call
- Working hours (9 AM–5 PM) overlap from 10:00 AM–5:00 PM MST (9:00 AM–4:00 PM PST), about 7 hours.
About Mountain Time (MST)
Mountain Time uses MST (UTC−7) in winter and MDT (UTC−6) in summer. Most of Arizona stays on MST all year and does not change its clocks. It's used in Denver, Salt Lake City, Albuquerque, Boise, El Paso and Calgary.
About Pacific Time (PST)
Pacific Time uses PST (UTC−8) in winter and PDT (UTC−7) during daylight saving time. It's used in Los Angeles, San Francisco, San Diego, Seattle, Portland, Las Vegas and Vancouver.
Frequently asked questions
What time is 12 PM MST in PST?
12:00 PM MDT is 11:00 AM PDT.
How many hours ahead or behind is PST from MST?
PST is 1 hour behind MST, all year.
Does MST change for daylight saving time?
Yes. Mountain Time uses MST (UTC−7) in winter and MDT (UTC−6) in summer. Most of Arizona stays on MST all year and does not change its clocks.
Does PST change for daylight saving time?
Yes. Pacific Time uses PST (UTC−8) in winter and PDT (UTC−7) during daylight saving time.
What is the best time for a call between MST and PST?
Right now, working hours overlap from 10:00 AM–5:00 PM MST (9:00 AM–4:00 PM PST), about 7 hours.
Is it MST or MDT right now?
Mountain Time uses MST in winter and MDT from the second Sunday in March to the first Sunday in November. The live clock on this page shows which one applies today.
More time zone conversions
- PST to MST (reverse)
- EST to PST
- MST to EST
- CST to PST
- MST to CST
- IST to PST
- GMT to PST
- UTC to PST
- HST to PST
- All time zones
Sources
Reviewed by Gurmej Singh, Founder, Divy Digital Hub · Last reviewed: Wednesday, September 30, 2026. All calculations run in your browser. Editorial policy.