MT to EDT Time Converter
EDT is 2 hours ahead of MT. The US Mountain states are currently on MDT (UTC-6:00), and EDT is UTC-4:00.
Best Time to Call Between MT and EDT
Both zones are inside normal business hours between 9:00 AM and 3:00 PM MT — that's 11:00 AM to 5:00 PM EDT. That's a 6-hour window.
both at work MT only EDT only neither — hours along the strip are MT.
Common Times Converted
MT on the left, EDT on the right.
MT to EDT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| MT | EDT | Working hours |
|---|---|---|
| 12:00 AM | 2:00 AM | — |
| 1:00 AM | 3:00 AM | — |
| 2:00 AM | 4:00 AM | — |
| 3:00 AM | 5:00 AM | — |
| 4:00 AM | 6:00 AM | — |
| 5:00 AM | 7:00 AM | — |
| 6:00 AM | 8:00 AM | — |
| 7:00 AM | 9:00 AM | EDT only |
| 8:00 AM | 10:00 AM | EDT only |
| 9:00 AM | 11:00 AM | Both zones |
| 10:00 AM | 12:00 PM | Both zones |
| 11:00 AM | 1:00 PM | Both zones |
| 12:00 PM | 2:00 PM | Both zones |
| 1:00 PM | 3:00 PM | Both zones |
| 2:00 PM | 4:00 PM | Both zones |
| 3:00 PM | 5:00 PM | MT only |
| 4:00 PM | 6:00 PM | MT only |
| 5:00 PM | 7:00 PM | — |
| 6:00 PM | 8:00 PM | — |
| 7:00 PM | 9:00 PM | — |
| 8:00 PM | 10:00 PM | — |
| 9:00 PM | 11:00 PM | — |
| 10:00 PM | 12:00 AM next day | — |
| 11:00 PM | 1:00 AM next day | — |
What MT and EDT Actually Are
MT — Mountain Time
Denver, Salt Lake City, Calgary, Edmonton — and Phoenix, which does not change its clocks. Standing at UTC-7:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to MST.
Mountain Time contains the most conspicuous daylight saving exception in North America: Arizona, which has opted out since 1968.
EDT — Eastern Daylight Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-4:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST.
EDT runs from the second Sunday in March to the first Sunday in November — about eight months, making the "daylight" version the majority of the year rather than the exception.
What This Means in Practice
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Close enough to share a working day
At only 2 hours apart, the two working days overlap almost completely. Scheduling is barely constrained by the difference.
Major Cities in Each Zone
Cities on MT
Cities on EDT
Frequently Asked Questions
What is the time difference between MT and EDT?
EDT is 2 hours ahead of MT. That is the live figure. Taken strictly as written, the gap between MT and EDT is 3 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM MT in EDT?
9:00 AM MT is 11:00 AM EDT.
What are the best hours to schedule a call between MT and EDT?
Between 9:00 AM and 3:00 PM MT, which is 11:00 AM to 5:00 PM EDT. Both sides are inside normal business hours through that window.
Does the difference between MT and EDT change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.