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Timezone Prime

MST to PST converter

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

From

Tue, Oct 27

To

Tue, Oct 27 Same day

MDT 9 to 5 PDT 9 to 5

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

PDT is 1 hour behind MDT.

Time difference
PDT is 1 hour behind MDT 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 10:00 AM to 5:00 PM MDT, which is 9:00 AM to 4:00 PM PDT while MDT and PDT 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 Denver to California, Denver to Los Angeles and Arizona to California.

Where MST and PST 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.

  • Mountain Time
  • Pacific 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.
Denver (MDT) Los Angeles (PDT) Working hours
12:00 AM 11:00 PM previous 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 Both working
11:00 AM 10:00 AM Both working
12:00 PM 11:00 AM Both working
1:00 PM 12:00 PM Both working
2:00 PM 1:00 PM Both working
3:00 PM 2:00 PM Both working
4:00 PM 3:00 PM Both working
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 to PST conversion table

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

MST to PST conversion table
Mountain Time PDT or PST 1 h behind, all year PST 2 h behind, 0 days in 2026
12:00 AM 11:00 PM (previous day)10:00 PM (previous day)
1:00 AM 12:00 AM11:00 PM (previous day)
2:00 AM 1:00 AM12:00 AM
3:00 AM 2:00 AM1:00 AM
4:00 AM 3:00 AM2:00 AM
5:00 AM 4:00 AM3:00 AM
6:00 AM 5:00 AM4:00 AM
7:00 AM 6:00 AM5:00 AM
8:00 AM 7:00 AM6:00 AM
9:00 AM 8:00 AM7:00 AM
9:30 AM 8:30 AM7:30 AM
10:00 AM 9:00 AM8:00 AM
10:30 AM 9:30 AM8:30 AM
11:00 AM 10:00 AM9:00 AM
11:30 AM 10:30 AM9:30 AM
12:00 PM 11:00 AM10:00 AM
12:30 PM 11:30 AM10:30 AM
1:00 PM 12:00 PM11:00 AM
1:30 PM 12:30 PM11:30 AM
2:00 PM 1:00 PM12:00 PM
2:30 PM 1:30 PM12:30 PM
3:00 PM 2:00 PM1:00 PM
3:30 PM 2:30 PM1:30 PM
4:00 PM 3:00 PM2:00 PM
4:30 PM 3:30 PM2:30 PM
5:00 PM 4:00 PM3:00 PM
5:30 PM 4:30 PM3:30 PM
6:00 PM 5:00 PM4:00 PM
7:00 PM 6:00 PM5:00 PM
8:00 PM 7:00 PM6:00 PM
9:00 PM 8:00 PM7:00 PM
10:00 PM 9:00 PM8:00 PM
11:00 PM 10:00 PM9:00 PM

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

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

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.

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.

MST and PST, answered

What is the time difference between MST and PST?

PDT is 1 hour behind MDT 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 California from MST?

California uses Pacific Time. PDT is 1 hour behind MDT 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 MST time into the MST to PST converter to see the California time for any date.

What is 9:00 AM MST in PST?

9:00 AM MDT or MST is 8:00 AM PDT or PST for all year. 9:00 AM MDT is 7:00 AM PST for 0 days in 2026.

What is 12:00 PM MST in PST?

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

What is 10:00 AM MST in PST?

10:00 AM MDT or MST is 9:00 AM PDT or PST for all year. 10:00 AM MDT is 8:00 AM PST for 0 days in 2026.

What is 5:00 PM MST in PST?

5:00 PM MDT or MST is 4:00 PM PDT or PST for all year. 5:00 PM MDT is 3:00 PM PST for 0 days in 2026.

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

No, PST is behind MST. PDT is 1 hour behind MDT 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 MST and PST?

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

Does daylight saving time affect MST to PST?

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 MST does the MST to PST converter use?

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

Which PST does the MST to PST 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.

Related conversions

From Mountain Time

To Pacific Time