EDT to MDT
-2hEDT
EDTSOURCEMDT
MDTGreen rows indicate typical business hours (9 AM - 5 PM)
EDT and MDT on the World Map
The map below highlights the EDT (Eastern Daylight Time) and MDT (Mountain Daylight Time) timezone regions across the globe.
EDT – Eastern Daylight Time
UTC-04:00Eastern Daylight Time (EDT) is the daylight saving time observed in the Eastern Time Zone, 4 hours behind UTC.
- •EDT is observed from the second Sunday of March to the first Sunday of November.
- •During EDT, the US East Coast is only 4 hours behind London (instead of 5).
- •Not all EST locations switch to EDT – Panama and Jamaica stay on EST year-round.
MDT – Mountain Daylight Time
UTC-06:00Mountain Daylight Time (MDT) is the daylight saving offset in the Mountain Time Zone, 6 hours behind UTC.
- •MDT shares the same offset as CST (UTC-06:00).
- •Arizona does not switch to MDT, remaining on MST.
Understanding the -2h Gap: EDT vs MDT
EDT runs on Eastern Daylight Time (EDT) at UTC-04:00. MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. That puts EDT 2 hours behind MDT — a difference of -2h at the current offsets.
In practice, when it is 9:00 AM in EDT it is 7:00 AM in MDT. Midnight in EDT is 10:00 PM in MDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
EDT to MDT time conversion table
| EDT (EDT) | MDT (MDT) | Day |
|---|---|---|
| 12:00 AM | 10:00 PM | previous day |
| 6:00 AM | 4:00 AM | same day |
| 7:00 AM | 5:00 AM | same day |
| 8:00 AM | 6:00 AM | same day |
| 9:00 AM | 7:00 AM | same day |
| 12:00 PM | 10:00 AM | same day |
| 3:00 PM | 1:00 PM | same day |
| 5:00 PM | 3:00 PM | same day |
| 6:00 PM | 4:00 PM | same day |
| 9:00 PM | 7:00 PM | same day |
Why people convert EDT to MDT time
- Scheduling a call from EDT to MDT: a 10:00 AM start in EDT lands at 8:00 AM in MDT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both EDT and MDT are inside the 9-to-5 working day between 11:00 AM and 5:00 PM EDT time (9:00 AM–3:00 PM MDT). That is roughly 6 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in EDT is 6:00 PM in MDT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM EDT" is unambiguous; "3 PM" across a -2h gap is not.
- Block 11:00 AM–5:00 PM EDT as the recurring meeting window if you work primarily from EDT and need MDT colleagues present.
About EDT (Eastern Daylight Time)
Eastern Daylight Time (EDT) is used during the summer months (second Sunday of March to the first Sunday of November) in the Eastern Time Zone. During EDT, clocks are advanced by one hour to take advantage of longer daylight hours. Not all locations in the Eastern Time Zone observe DST – Panama, Jamaica, and most of the Caribbean remain on EST year-round.
About MDT (Mountain Daylight Time)
Mountain Daylight Time (MDT) is observed during summer months in the Mountain Time Zone, except in Arizona which stays on MST year-round. MDT aligns with Central Standard Time (CST) at UTC-06:00.
Best time to call between EDT and MDT
Both EDT and MDT sit inside the 9 AM – 5 PM working day between 11:00 AM–5:00 PM EDT, which is 9:00 AM–3:00 PM MDT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
EDT and MDT share 6 hours of working-hours overlap (11:00 AM–5:00 PM EDT), so scheduling a live meeting is straightforward.
EDT is 2 hours behind MDT (EDT UTC-04:00 → MDT UTC-06:00). The shared working window is 11:00 AM–5:00 PM EDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
EDT
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
MDT
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between EDT and MDT?
EDT (EDT, UTC-04:00) is 2 hours behind MDT (MDT, UTC-06:00). The gap is currently -2h.
How do I convert EDT time to MDT time?
Add -2h to EDT local time. For example, 9:00 AM in EDT is 7:00 AM in MDT.
What time is it in MDT right now?
MDT uses MDT at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h offset from EDT.
What is the best time to call MDT from EDT?
Call between 11:00 AM and 5:00 PM EDT — that maps to 9:00 AM–3:00 PM MDT and keeps both parties inside the working day.
Which is behind, EDT or MDT?
EDT is 2 hours behind MDT. When it is 12:00 PM in EDT it is 10:00 AM in MDT.
Does daylight saving time affect the EDT–MDT difference?
Neither zone observes daylight saving time, so the -2h offset between EDT and MDT is fixed all year.
Which other cities share EDT's time zone?
EDT also covers New York City, Washington D.C., Toronto, Miami, Philadelphia, Atlanta, Boston, Montreal.
Which countries use EDT, EDT's zone?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Bahamas, Haiti, Turks and Caicos.
Is there a day difference between EDT and MDT?
Not normally. The -2h gap only pushes the date over the previous day.
What is the time difference between EDT and MDT?
MDT is -2h from EDT.
What timezone is EDT in?
EDT operates on its local timezone.
What timezone is MDT in?
MDT operates on its local timezone.
Which countries use EDT (Eastern Daylight Time)?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Bahamas, Haiti, Turks and Caicos.
Does EDT observe daylight saving time?
Yes, EDT switches to EST during summer months.
What are some interesting facts about EDT?
EDT is observed from the second Sunday of March to the first Sunday of November. During EDT, the US East Coast is only 4 hours behind London (instead of 5).
Which cities are in the MDT timezone?
Major cities in the MDT timezone include Denver, Calgary, Edmonton, Salt Lake City, Boise.
What is the UTC offset for MDT?
Mountain Daylight Time (MDT) is at UTC-06:00. During daylight saving time, it shifts to MST.
What should I know about the MDT timezone?
MDT shares the same offset as CST (UTC-06:00). Arizona does not switch to MDT, remaining on MST.
When is it midnight in EDT, what time is it in MDT?
When it is 12:00 AM (midnight) in EDT (EDT), it is -2h later in MDT (MDT).
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See every conversion from EDT →·See every conversion from MDT →