MST to PST Converter | Mountain to Pacific

MST to PST Conversion Table

Offset: MST -1 hours = PST. Applies during standard time. Work hours (9 AM–5 PM) highlighted.

MST		PST
00:00		23:00 (−1 day)
01:00		00:00
02:00		01:00
03:00		02:00
04:00		03:00
05:00		04:00
06:00		05:00
07:00		06:00
08:00		07:00
09:00		08:00
10:00		09:00
11:00		10:00
12:00		11:00
13:00		12:00
14:00		13:00
15:00		14:00
16:00		15:00
17:00		16:00
18:00		17:00
19:00		18:00
20:00		19:00
21:00		20:00
22:00		21:00
23:00		22:00

The Mountain–Pacific corridor connects Denver and Salt Lake City with Los Angeles, San Francisco, and Seattle. Tech companies with offices in both regions, ski-industry businesses, and inter-mountain logistics firms use this conversion regularly.

Pacific Standard Time is UTC−8 and Mountain Standard Time is UTC−7, giving a 1-hour gap. When it’s 10 AM in Denver, it’s 9 AM in Los Angeles. Both zones observe DST on the same US schedule, so the gap stays at 1 hour year-round.

The exception is Arizona, which skips DST. During summer, Arizona (still on MST, UTC−7) is at the same time as PDT (UTC−7), effectively eliminating the gap for Arizona-based teams calling California.

Daylight Saving Time: What Changes

Both MST and PST observe daylight saving time. Since they typically switch on the same schedule, the 1-hour difference stays constant year-round — except during the brief transition windows when one zone has switched and the other hasn't yet. During those 1-2 weeks, the offset shifts by one hour.

Frequently Asked Questions

What is the time difference between MST and PST?

PST is 1 hour behind MST. When it is 3 PM in Denver, it is 2 PM in Los Angeles. The 1-hour gap holds year-round because both zones shift to DST on the same schedule.

Does DST change the MST-to-PST offset?

No, as long as both locations observe DST. Both shift on the same US dates, keeping the gap at 1 hour. Arizona is the exception: it stays on MST year-round, so during summer Arizona and PDT are the same time (both UTC−7).

What is the best meeting time for Mountain and Pacific?

With only a 1-hour gap, nearly the entire workday overlaps. Any time between 9 AM and 5 PM Mountain (8 AM–4 PM Pacific) works well. The offset is small enough to be a non-issue for most teams.

MST to PST Converter | Mountain to Pacific

MST to PST Conversion Table

Daylight Saving Time: What Changes

Frequently Asked Questions

Learn More

Your calendar + time zones, at a glance.

MST to PST Converter | Mountain to Pacific

MST to PST Conversion Table

Daylight Saving Time: What Changes

Frequently Asked Questions

Related Conversions

Learn More

Your calendar + time zones, at a glance.