EST to MST converter

EST to MST quick reference

EST or EDT, MST or MDT? Daylight saving explained

EST (UTC−5) is the winter name and EDT (UTC−4) the summer name. Most people write “EST” all year and mean whatever the clocks say in New York, so MeetETA reads EST as local Eastern time on the date you pick, and says so when that date is on EDT.

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 New York is on EDT, UTC−4 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 2 hours behind New York all year.

Working-day overlap, hour by hour

Each row is an hour in New York. Green means that side is inside a 9–5 working day. There is 6 h of shared 9–5 time; the easiest window is 9 AM–10 PM EST (7 AM–8 PM MST).

Shows New York 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 EST and MST?

Denver is 2 h behind New York all year. Right now it is 2 h.

Does the EST 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 EST to MST?

3 PM EST is 1 PM MST. Or just type “3 PM EST” in the converter at the top of this page.

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

There is 6 h of shared 9–5 time; the most comfortable window is 9 AM–10 PM EST (7 AM–8 PM MST).

What time is 9 PM MST in EST?

9 PM MST is 11 PM EST. For other times, type something like “9 PM MST” in the converter.

Should I write EST or EDT?

EST (UTC−5) is the winter name and EDT (UTC−4) the summer name. Most people write “EST” all year and mean whatever the clocks say in New York, so MeetETA reads EST as local Eastern time on the date you pick, and says so when that date is on EDT.

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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