MST to PST time
Pacific Time is one hour behind Mountain Time for Denver and Utah year-round: 3:00 PM in Salt Lake City is 2:00 PM in San Francisco. For Phoenix the gap is one hour in winter and zero in summer, because Arizona does not move its clocks.
Convert the other way: PST → MST
Three clocks on one highway
Interstate 15 shows the Mountain–Pacific puzzle better than any map. Driving south from St. George, Utah, you cross a corner of Arizona before entering Nevada at Mesquite. In summer, Utah is on MDT (UTC−6) while Arizona and Nevada both read UTC−7, so your phone changes at the Utah–Arizona line. In winter, Utah and Arizona share UTC−7 and Nevada is UTC−8, so the change happens at the Arizona–Nevada line instead.
The same trip from Salt Lake City to Las Vegas takes about six hours by car, and you arrive one hour "earlier" on the clock than the elapsed time suggests, whatever the season.
Mountain-based teams with West Coast clients
Denver and Utah have become a base for companies serving California and the Pacific Northwest from a lower-cost location. Starting the day at 9:00 AM Mountain means the West Coast is still at 8:00 AM, so Mountain teams often put internal work first and keep 10:00 AM–5:00 PM Mountain open for client calls (9:00 AM–4:00 PM Pacific).
A stand-up at 10:00 AM Mountain is 9:00 AM Pacific, and a 4:00 PM Pacific end-of-day review is 5:00 PM in Denver. If you need the reverse calculation, PST to MST explains the Arizona and Idaho splits from the West Coast side.
Cities on these zones
Mountain Time MST
Pacific Time PST
MST → PST quick reference
Every hour of the day, using today's offsets (daylight saving is applied automatically).
| MST | PST |
|---|---|
| 12:00 AM | 11:00 PM−1 |
| 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 |
| MST | PST |
|---|---|
| 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 |
- Difference right now
- PST 1 hours behind MST
- Shared office hours
- 7 PM–2 AM MST
- Daylight saving
- Both zones shift their clocks
Clock changes this year
- Mar 8, 2026MST: clocks go forward, UTC−7 → UTC−6
- Nov 1, 2026MST: clocks go back, UTC−6 → UTC−7
- Mar 8, 2026PST: clocks go forward, UTC−8 → UTC−7
- Nov 1, 2026PST: clocks go back, UTC−7 → UTC−8
Other conversions with these zones
Frequently asked questions
- What time is 3 PM Mountain in California?
- It is 2:00 PM in California when the Mountain time is Denver or Salt Lake City. In Phoenix during summer, 3:00 PM is also 3:00 PM in California.
- Why does my phone change time at the Utah–Arizona border in summer?
- Utah observes daylight saving and Arizona does not, so in summer they are an hour apart. In winter they match and the change moves to the Nevada line.
- Is Salt Lake City one hour ahead of Seattle?
- Yes, all year. Utah and Washington both observe daylight saving on the same US dates.
- What is the best slot for a Denver–San Francisco meeting?
- 10:00 AM–noon Mountain (9:00–11:00 AM Pacific) or 1:00–4:00 PM Mountain (noon–3:00 PM Pacific) avoid early starts and late finishes on both sides.
- Is Montana on Mountain time?
- Yes. All of Montana uses Mountain Time with daylight saving, so Billings and Missoula are one hour ahead of Seattle.