PST to MST time difference
Right now US Mountain Time is 1 hour ahead of US Pacific Time: when it is 9:00 AM in US Pacific Time (PDT), it is 10:00 AM in US Mountain Time (MDT). The difference is not fixed. US Pacific Time and US Mountain Time change the clocks twice a year, so from November 2, 2026 the gap becomes 1 hour, and from March 15, 2027 it goes back to 1 hour.
PT, PST and PDT; MT, MST and MDT
PT means Pacific Time, whatever the season. It is PST (Pacific Standard Time, UTC-8) from early November to mid-March and PDT (Pacific Daylight Time, UTC-7) the rest of the year. Today it is PDT. MT means Mountain Time, whatever the season. It is MST (Mountain Standard Time, UTC-7) from early November to mid-March and MDT (Mountain Daylight Time, UTC-6) the rest of the year. Today it is MDT. Most of Arizona stays on MST all year, so in summer Arizona has the same clock time as Pacific Time; this page follows Denver, which changes the clocks. Because all of these zones change their clocks on the same nights, the gap between PT and MT stays 1 hour all year. People often write "EST" all year when they mean Eastern Time; the times on this page are correct either way.
PST to MST conversion table
Every hour of the day in US Pacific Time and the matching time in US Mountain Time, for today, October 13, 2026.
| PST (US Pacific Time) | MST (US Mountain Time) |
|---|---|
| 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 |
| 9:00 AM | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
| 1:00 PM | 2:00 PM |
| 2:00 PM | 3:00 PM |
| 3:00 PM | 4:00 PM |
| 4:00 PM | 5:00 PM |
| 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) |
Scheduling tips
The gap is small, so normal working hours mostly overlap. When you share a time, write the zone with it, such as "9:00 AM PST", and remember that a time near midnight can fall on a different date on the other side.
Reverse: MST to PST. Other converters: PST to PKT · PST to EST · EST to MST · CST to MST · PST to CST · PST to IST · any time zone to your time
Frequently asked questions
What is the time difference between PST and MST?
Right now US Mountain Time is 1 hour ahead of US Pacific Time. The gap changes to 1 hour on November 2, 2026 when daylight saving time starts or ends.
What time is it in US Mountain Time when it is 9 AM in US Pacific Time?
10:00 AM.
What is 8 PM PST in MST?
9:00 PM MDT.
Does the PST to MST difference change during the year?
Yes. One or both places use daylight saving time, so the gap changes on November 2, 2026 and March 15, 2027.
How do I convert PST to MST?
Enter the PST time and date at the top. The converter applies the difference for that date, including daylight saving time.
What is 12 PM PST in MST?
1:00 PM today.
What is 6 PM PST in MST?
7:00 PM today.
What is the best time for a call between US Pacific Time and US Mountain Time?
Pick a time that is in working hours in both places; the hour-by-hour table on this page shows both clocks side by side.