Time zone converter

MST to EST

On Oct 23, 2026, Eastern Time is 2 hours ahead of Mountain Time: 9:00 AM MDT is 11:00 AM EDT. The gap changes during the year because of daylight saving time; the dates are below.

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

EST vs MST over the next 12 months

PeriodEST isExample
Oct 23, 2026 to Oct 31, 20262 hours ahead9:00 AM MDT = 11:00 AM EDT
Nov 1, 2026 to Nov 1, 20261 hour ahead9:00 AM MST = 11:00 AM EST
Nov 1, 2026 to Mar 13, 20272 hours ahead9:00 AM MST = 11:00 AM EST
Mar 14, 2027 to Mar 14, 20273 hours ahead9:00 AM MDT = 11:00 AM EDT
Mar 14, 2027 onwards2 hours ahead9:00 AM MDT = 11:00 AM EDT

MST to EST conversion table

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

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

Best time for a meeting

Normal 9-to-5 working hours overlap for 6 hours on a weekday: 9:00 AM–3:00 PM MDT, which is 11:00 AM–5:00 PM EDT.

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

Daylight saving time

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)

Eastern Time (EST/EDT)

  • Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−4 → UTC−5)
  • Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−5 → UTC−4)

Where these clocks are used

  • Mountain Time (MST/MDT): Denver, Salt Lake City, Calgary. IANA zone America/Denver.
  • Eastern Time (EST/EDT): New York, Toronto, Miami, Atlanta. IANA zone America/New_York.

Questions

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

On Oct 23, 2026, 9:00 AM MDT is 11:00 AM EDT. 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 MST is EST?

It depends on the date. Oct 23, 2026 to Oct 31, 2026: EST is 2 hours ahead. Nov 1, 2026 to Nov 1, 2026: EST is 1 hour ahead. Nov 1, 2026 to Mar 13, 2027: EST is 2 hours ahead. Mar 14, 2027 to Mar 14, 2027: EST is 3 hours ahead. Mar 14, 2027 onwards: EST is 2 hours ahead.

Do MST and EST observe daylight saving time?

Mountain Time switches to MDT (UTC−6) in summer and back to MST (UTC−7) in winter. Eastern Time switches to EDT (UTC−4) in summer and back to EST (UTC−5) in winter.

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

Normal 9-to-5 working hours overlap for 6 hours on a weekday: 9:00 AM–3:00 PM MDT, which is 11:00 AM–5:00 PM EDT.

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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.