Time zone converter

PST to MST

On Oct 23, 2026, Mountain Time is 1 hour ahead of Pacific Time: 9:00 AM PDT is 10:00 AM MDT. The gap changes during the year because of daylight saving time; the dates are below.

Pacific Time
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Current time in Pacific Time
Mountain Time
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Current time in Mountain Time
Pick a date and time to convert.

MST vs PST over the next 12 months

PeriodMST isExample
Oct 23, 2026 to Nov 1, 20261 hour ahead9:00 AM PDT = 10:00 AM MDT
Nov 1, 2026 to Nov 1, 2026same time9:00 AM PST = 10:00 AM MST
Nov 1, 2026 to Mar 14, 20271 hour ahead9:00 AM PST = 10:00 AM MST
Mar 14, 2027 to Mar 14, 20272 hours ahead9:00 AM PDT = 10:00 AM MDT
Mar 14, 2027 onwards1 hour ahead9:00 AM PDT = 10:00 AM MDT

PST to MST conversion table

Every hour of a weekday around Oct 23, 2026, in both zones.

Pacific TimeMountain Time
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM (next day)

Best time for a meeting

Normal 9-to-5 working hours overlap for 7 hours on a weekday: 9:00 AM–4:00 PM PDT, which is 10:00 AM–5:00 PM MDT.

Comparing more than two places? The meeting planner lines up working hours for up to six cities.

Daylight saving time

Pacific Time (PST/PDT)

  • Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−7 → UTC−8)
  • Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−8 → UTC−7)

Mountain Time (MST/MDT)

  • Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−6 → UTC−7)
  • Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−7 → UTC−6)

Where these clocks are used

  • Pacific Time (PST/PDT): Los Angeles, San Francisco, Seattle, Vancouver. IANA zone America/Los_Angeles.
  • Mountain Time (MST/MDT): Denver, Salt Lake City, Calgary. IANA zone America/Denver.

Questions

What time is it in MST when it is 9 AM PST?

On Oct 23, 2026, 9:00 AM PDT is 10:00 AM MDT. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.

How many hours ahead of PST is MST?

It depends on the date. Oct 23, 2026 to Nov 1, 2026: MST is 1 hour ahead. Nov 1, 2026 to Nov 1, 2026: MST is same time. Nov 1, 2026 to Mar 14, 2027: MST is 1 hour ahead. Mar 14, 2027 to Mar 14, 2027: MST is 2 hours ahead. Mar 14, 2027 onwards: MST is 1 hour ahead.

Do PST and MST observe daylight saving time?

Pacific Time switches to PDT (UTC−7) in summer and back to PST (UTC−8) in winter. Mountain Time switches to MDT (UTC−6) in summer and back to MST (UTC−7) in winter.

What is the best time for a meeting between PST and MST?

Normal 9-to-5 working hours overlap for 7 hours on a weekday: 9:00 AM–4:00 PM PDT, which is 10:00 AM–5:00 PM MDT.

Scheduling across time zones? Share one Caly booking link and every guest sees your free times in their own zone. Try Caly free

Related conversions

Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.