PST to MST converter

PST to MST quick reference

PST or PDT, MST or MDT? Daylight saving explained

PST (UTC−8) is the winter name and PDT (UTC−7) the summer name. People usually write “PST” all year and mean local Pacific time (Los Angeles, San Francisco, Seattle), so MeetETA reads it that way and handles daylight saving for you.

MST (UTC−7) is the winter name and MDT (UTC−6) the summer name. This page uses Denver time, which changes its clocks. Most of Arizona (Phoenix) stays on MST all year, so in summer Phoenix is an hour behind Denver.

Right now Los Angeles is on PDT, UTC−7 and Denver is on MDT, UTC−6 (the clocks at the top of the page always show the live values).

How the gap changes during the year

Denver is 1 hour ahead of Los Angeles all year.

Working-day overlap, hour by hour

Each row is an hour in Los Angeles. Green means that side is inside a 9–5 working day. There is 7 h of shared 9–5 time; the easiest window is 7 AM–9 PM PST (8 AM–10 PM MST).

Shows Los Angeles 5 AM to 10 PM. Times on the Denver side may fall on the next day.

Example conversions

Questions people ask

What is the time difference between PST and MST?

Denver is 1 h ahead of Los Angeles all year. Right now it is 1 h.

Does the PST to MST difference change with daylight saving?

Both sides use daylight saving, so the gap only changes when they switch on different dates.

How do I convert 3 PM PST to MST?

3 PM PST is 4 PM MST. Or just type “3 PM PST” in the converter at the top of this page.

When can the US West Coast and US Mountain time meet during work hours?

There is 7 h of shared 9–5 time; the most comfortable window is 7 AM–9 PM PST (8 AM–10 PM MST).

What time is 9 PM MST in PST?

9 PM MST is 8 PM PST. For other times, type something like “9 PM MST” in the converter.

Should I write PST or PDT?

PST (UTC−8) is the winter name and PDT (UTC−7) the summer name. People usually write “PST” all year and mean local Pacific time (Los Angeles, San Francisco, Seattle), so MeetETA reads it that way and handles daylight saving for you.

Should I write MST or MDT?

MST (UTC−7) is the winter name and MDT (UTC−6) the summer name. This page uses Denver time, which changes its clocks. Most of Arizona (Phoenix) stays on MST all year, so in summer Phoenix is an hour behind Denver.

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