EST to MDT Converter & Meeting Planner
Quick answer: 9:00 AM EST = 8:00 AM MDT (fixed -05:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Eastern Standard Time (EST) and Mountain Daylight Time (MDT)? You need to account for the standard time difference. Mountain Daylight Time is normally 1 hours behind Eastern Standard Time. Whether you are coordinating between teams in New York and Toronto and Denver and Salt Lake City, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM EST = 11:00 PM MDT. The full 24-hour EST to MDT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM EST = 2:00 PM MDT.
| EST Time | MDT Time |
|---|---|
| 12:00 AM (00:00) | 11:00 PM (23:00)-1 day |
| 1:00 AM (01:00) | 12:00 AM (00:00) |
| 2:00 AM (02:00) | 1:00 AM (01:00) |
| 3:00 AM (03:00) | 2:00 AM (02:00) |
| 4:00 AM (04:00) | 3:00 AM (03:00) |
| 5:00 AM (05:00) | 4:00 AM (04:00) |
| 6:00 AM (06:00) | 5:00 AM (05:00) |
| 7:00 AM (07:00) | 6:00 AM (06:00) |
| 8:00 AM (08:00) | 7:00 AM (07:00) |
| 9:00 AM (09:00) | 8:00 AM (08:00) |
| 10:00 AM (10:00) | 9:00 AM (09:00) |
| 11:00 AM (11:00) | 10:00 AM (10:00) |
| 12:00 PM (12:00) | 11:00 AM (11:00) |
| 1:00 PM (13:00) | 12:00 PM (12:00) |
| 2:00 PM (14:00) | 1:00 PM (13:00) |
| 3:00 PM (15:00) | 2:00 PM (14:00) |
| 4:00 PM (16:00) | 3:00 PM (15:00) |
| 5:00 PM (17:00) | 4:00 PM (16:00) |
| 6:00 PM (18:00) | 5:00 PM (17:00) |
| 7:00 PM (19:00) | 6:00 PM (18:00) |
| 8:00 PM (20:00) | 7:00 PM (19:00) |
| 9:00 PM (21:00) | 8:00 PM (20:00) |
| 10:00 PM (22:00) | 9:00 PM (21:00) |
| 11:00 PM (23:00) | 10:00 PM (22:00) |
Best time to call Denver from New York
For most work calls, compare the normal business day in New York (EST) with the business day in Denver (MDT). EST commonly covers North America, Caribbean, Central America, while MDT is mainly associated with North America.
⚠️ Note: 2026-07-04 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-04 is usually 11:00 AM - 5:00 PM EST, which corresponds to 9:00 AM - 3:00 PM MDT. This window sits inside the typical EST workday (9:00 AM - 5:00 PM) and the MDT workday (9:00 AM - 5:00 PM).
- DST Safety: EST or MDT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- NYSE & NASDAQ: 09:30-16:00 local time in New York.
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Frequently Asked Questions
What is the time difference between EST and MDT?
During standard time, Mountain Daylight Time is 1 hours behind Eastern Standard Time.
Is EST the same as Eastern Time (ET)?
Not exactly. 'Eastern Time' (ET) is a broad geographical term. EST is the specific UTC-05:00 offset used in winter, while EDT (Eastern Daylight Time) is the UTC-04:00 offset used during summer.
Does Florida use EST?
Most of Florida is in the Eastern Time Zone. However, the western part of the Florida Panhandle operates on Central Time (CST/CDT).
When does MDT start and end?
MDT begins on the second Sunday in March at 02:00 local MST time, when clocks spring forward one hour from MST (UTC-7) to MDT (UTC-6). It ends on the first Sunday in November at 02:00 local MDT time, when clocks fall back to MST. In 2026, MDT runs from March 8 through November 1, covering the majority of the calendar year.
Is Arizona on MDT?
Most of Arizona — including Phoenix and Tucson — does not observe Daylight Saving Time and remains on MST (UTC-7) year-round under a state law in effect since 1968, meaning Arizona does not advance to MDT each March. The significant exception is the Navajo Nation, a sovereign territory spanning parts of northeastern Arizona, southeastern Utah, and northwestern New Mexico, which does observe DST and shifts to MDT on the standard federal schedule.