PST to MDT Time Converter
MDT is 1 hour ahead of PST. The US West Coast is currently on PDT (UTC-7:00), and MDT is UTC-6:00.
Best Time to Call Between PST and MDT
Both zones are inside normal business hours between 9:00 AM and 4:00 PM PST — that's 10:00 AM to 5:00 PM MDT. That's a 7-hour window.
both at work PST only MDT only neither — hours along the strip are PST.
Common Times Converted
PST on the left, MDT on the right.
PST to MDT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| PST | MDT | Working hours |
|---|---|---|
| 12:00 AM | 1:00 AM | — |
| 1:00 AM | 2:00 AM | — |
| 2:00 AM | 3:00 AM | — |
| 3:00 AM | 4:00 AM | — |
| 4:00 AM | 5:00 AM | — |
| 5:00 AM | 6:00 AM | — |
| 6:00 AM | 7:00 AM | — |
| 7:00 AM | 8:00 AM | — |
| 8:00 AM | 9:00 AM | MDT only |
| 9:00 AM | 10:00 AM | Both zones |
| 10:00 AM | 11:00 AM | Both zones |
| 11:00 AM | 12:00 PM | Both zones |
| 12:00 PM | 1:00 PM | Both zones |
| 1:00 PM | 2:00 PM | Both zones |
| 2:00 PM | 3:00 PM | Both zones |
| 3:00 PM | 4:00 PM | Both zones |
| 4:00 PM | 5:00 PM | PST only |
| 5:00 PM | 6:00 PM | — |
| 6:00 PM | 7:00 PM | — |
| 7:00 PM | 8:00 PM | — |
| 8:00 PM | 9:00 PM | — |
| 9:00 PM | 10:00 PM | — |
| 10:00 PM | 11:00 PM | — |
| 11:00 PM | 12:00 AM next day | — |
What PST and MDT Actually Are
PST — Pacific Standard Time
Los Angeles, San Francisco, Seattle, Las Vegas, Vancouver. Standing at UTC-8:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to PST. The Philippines occasionally uses PST for Philippine Standard Time (UTC+8); PHT is the clearer label for that.
California voted in 2018 to move to permanent daylight time, but the change needs an act of Congress and has never happened, so PST is still the winter standard.
MDT — Mountain Daylight Time
Denver, Salt Lake City, Calgary, Edmonton. Standing at UTC-6:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to MST.
Because Arizona does not follow it, MDT is the half of the year when Phoenix and Denver read the same clock despite being in different zones.
What This Means in Practice
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Close enough to share a working day
At only 1 hour apart, the two working days overlap almost completely. Scheduling is barely constrained by the difference.
Major Cities in Each Zone
Cities on PST
Cities on MDT
Frequently Asked Questions
What is the time difference between PST and MDT?
MDT is 1 hour ahead of PST. That is the live figure. Taken strictly as written, the gap between PST and MDT is 2 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM PST in MDT?
9:00 AM PST is 10:00 AM MDT.
What are the best hours to schedule a call between PST and MDT?
Between 9:00 AM and 4:00 PM PST, which is 10:00 AM to 5:00 PM MDT. Both sides are inside normal business hours through that window.
Does the difference between PST and MDT change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does PST always mean Pacific Standard Time?
The Philippines occasionally uses PST for Philippine Standard Time (UTC+8); PHT is the clearer label for that.