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Timezone Prime

PST to MST converter

Convert Pacific Time (PST/PDT) to Mountain Time (MST/MDT), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

PDT 9 to 5 MDT 9 to 5

From zone
Pacific Daylight Time
Offset and clock
UTC−7 Daylight saving time
IANA name
America/Los_Angeles
To zone
Mountain Daylight Time
Offset and clock
UTC−6 Daylight saving time
IANA name
America/Denver

MDT is 1 hour ahead of PDT.

Time difference
MDT is 1 hour ahead of PDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026.
Meeting window
Working days of 9 AM to 5 PM overlap from 9:00 AM to 4:00 PM PDT, which is 10:00 AM to 5:00 PM MDT while PDT and MDT apply.
Daylight saving
Both zones change their clocks, on the dates listed below, so the gap can shift during the year.

The same conversion works for every city on these clocks, such as California to Denver, California to Arizona and Los Angeles to Denver.

Where PST and MST apply

Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.

  • Pacific Time
  • Mountain Time
  • Same UTC offset right now, different zone rules

Drag to pan. Ctrl and scroll, or pinch, to zoom. Boundaries: timezone-boundary-builder, © OpenStreetMap contributors

Hour by hour

Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.

Shaded rows fall inside working hours in both places.

Hourly comparison of the two time zones. Choose a time to load it in the converter.
Los Angeles (PDT) Denver (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
9:00 AM 10:00 AM Both working
10:00 AM 11:00 AM Both working
11:00 AM 12:00 PM Both working
12:00 PM 1:00 PM Both working
1:00 PM 2:00 PM Both working
2:00 PM 3:00 PM Both working
3:00 PM 4:00 PM Both working
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

PST to MST conversion table

Every hour of the Pacific Time day, plus the common half hours, and their MST equivalents. The second column covers the part of the year when the clocks are on a different gap.

PST to MST conversion table
Pacific Time MDT or MST 1 h ahead, all year MDT 2 h ahead, 0 days in 2026
12:00 AM 1:00 AM2:00 AM
1:00 AM 2:00 AM3:00 AM
2:00 AM 3:00 AM4:00 AM
3:00 AM 4:00 AM5:00 AM
4:00 AM 5:00 AM6:00 AM
5:00 AM 6:00 AM7:00 AM
6:00 AM 7:00 AM8:00 AM
7:00 AM 8:00 AM9:00 AM
8:00 AM 9:00 AM10:00 AM
9:00 AM 10:00 AM11:00 AM
9:30 AM 10:30 AM11:30 AM
10:00 AM 11:00 AM12:00 PM
10:30 AM 11:30 AM12:30 PM
11:00 AM 12:00 PM1:00 PM
11:30 AM 12:30 PM1:30 PM
12:00 PM 1:00 PM2:00 PM
12:30 PM 1:30 PM2:30 PM
1:00 PM 2:00 PM3:00 PM
1:30 PM 2:30 PM3:30 PM
2:00 PM 3:00 PM4:00 PM
2:30 PM 3:30 PM4:30 PM
3:00 PM 4:00 PM5:00 PM
3:30 PM 4:30 PM5:30 PM
4:00 PM 5:00 PM6:00 PM
4:30 PM 5:30 PM6:30 PM
5:00 PM 6:00 PM7:00 PM
5:30 PM 6:30 PM7:30 PM
6:00 PM 7:00 PM8:00 PM
7:00 PM 8:00 PM9:00 PM
8:00 PM 9:00 PM10:00 PM
9:00 PM 10:00 PM11:00 PM
10:00 PM 11:00 PM12:00 AM (next day)
11:00 PM 12:00 AM (next day)1:00 AM (next day)

How the gap changes in 2026 and 2027

Each row is a stretch of days with one constant difference, split at every clock change.

Time difference periods between PST and MST
Dates PST MST Difference
Thu, Jan 1, 2026 until Sun, Mar 8, 2026 PST MST MST 1 h ahead
Sun, Mar 8, 2026 until Sun, Mar 8, 2026 PST MDT MDT 2 h ahead
Sun, Mar 8, 2026 until Sun, Nov 1, 2026 PDT MDT MDT 1 h ahead
Sun, Nov 1, 2026 until Sun, Nov 1, 2026 PDT MST Same time
Sun, Nov 1, 2026 until Sun, Mar 14, 2027 PST MST MST 1 h ahead
Sun, Mar 14, 2027 until Sun, Mar 14, 2027 PST MDT MDT 2 h ahead
Sun, Mar 14, 2027 until Sun, Nov 7, 2027 PDT MDT MDT 1 h ahead
Sun, Nov 7, 2027 until Sun, Nov 7, 2027 PDT MST Same time
Sun, Nov 7, 2027 until Sat, Jan 1, 2028 PST MST MST 1 h ahead

Upcoming clock changes

  1. Mountain Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
  2. Pacific Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
  3. Mountain Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  4. Pacific Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  5. Mountain Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  6. Pacific Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  7. Mountain Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  8. Pacific Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM

About the two zones

Pacific Time (PST / PDT)

Pacific Time follows the clock in Los Angeles: Pacific Standard Time (PST, UTC−8) in winter and Pacific Daylight Time (PDT, UTC−7) during US daylight saving time.

IANA zone
America/Los_Angeles
Offset
UTC−8 standard, UTC−7 daylight saving
Used in
the US West Coast and British Columbia
Major cities
Los Angeles, San Francisco, Seattle, Vancouver, Las Vegas, Portland

PST is often used loosely for Pacific Time all year. In summer the correct abbreviation is PDT; the converter uses whichever applies on your date.

Mountain Time (MST / MDT)

Mountain Time follows the clock in Denver: Mountain Standard Time (MST, UTC−7) in winter and Mountain Daylight Time (MDT, UTC−6) during US daylight saving time.

IANA zone
America/Denver
Offset
UTC−7 standard, UTC−6 daylight saving
Used in
the mountain states of the US and parts of Canada
Major cities
Denver, Salt Lake City, Albuquerque, Calgary, Edmonton, Boise

Most of Arizona stays on MST all year and does not switch to MDT. For Phoenix, pick America/Phoenix in the converter.

PST and MST, answered

What is the time difference between PST and MST?

MDT is 1 hour ahead of PDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026.

How do I work out the time in Denver from PST?

Denver uses Mountain Time. MDT is 1 hour ahead of PDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026. Type any PST time into the PST to MST converter to see the Denver time for any date.

What is 9:00 AM PST in MST?

9:00 AM PDT or PST is 10:00 AM MDT or MST for all year. 9:00 AM PST is 11:00 AM MDT for 0 days in 2026.

What is 12:00 PM PST in MST?

12:00 PM PDT or PST is 1:00 PM MDT or MST for all year. 12:00 PM PST is 2:00 PM MDT for 0 days in 2026.

What is 10:00 AM PST in MST?

10:00 AM PDT or PST is 11:00 AM MDT or MST for all year. 10:00 AM PST is 12:00 PM MDT for 0 days in 2026.

What is 5:00 PM PST in MST?

5:00 PM PDT or PST is 6:00 PM MDT or MST for all year. 5:00 PM PST is 7:00 PM MDT for 0 days in 2026.

Is MST ahead of PST, and by how many hours?

Yes. MDT is 1 hour ahead of PDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026.

What is a good meeting time for PST and MST?

Working days of 9 AM to 5 PM overlap from 9:00 AM to 4:00 PM PDT, which is 10:00 AM to 5:00 PM MDT while PDT and MDT apply.

Does daylight saving time affect PST to MST?

Both zones change their clocks, on their own dates, so the gap can shift during the year. The next change is on Sunday, November 1, 2026 in Mountain Time.

Which PST does the PST to MST converter use?

PST is often used loosely for Pacific Time all year. In summer the correct abbreviation is PDT; the converter uses whichever applies on your date.

Which MST does the PST to MST converter use?

Most of Arizona stays on MST all year and does not switch to MDT. For Phoenix, pick America/Phoenix in the converter.

Related conversions

From Pacific Time

To Mountain Time