MST to EST Time — Convert Mountain Standard Time (US) to Eastern Standard Time (US)

EST is currently 2 hours ahead of MST.

MST is Mountain Standard Time (UTC−7). Most of the US Mountain zone switches to MDT (UTC−6) in summer, but Arizona (except the Navajo Nation) stays on MST year-round.

On Clockjumper, EST refers to Eastern Standard Time in the United States (UTC−5). The US East Coast observes EST in winter and switches to EDT (UTC−4) during daylight saving time.

The MST → EST offset stays constant across the year — neither zone shifts for daylight saving in a way that changes this gap.

Is EST ahead of or behind MST right now?

EST is currently 2 hours ahead of MST.

What is the current MST to EST time difference?

Right now the gap is 2 hours — EST is 2 hours ahead of MST.

Does the MST → EST offset change during the year?

No. Neither Mountain Standard Time (US) nor Eastern Standard Time (US) shifts for daylight saving in a way that changes this offset — the gap is the same all year.

Does MST observe daylight saving time?

MST is itself the standard-time form. Mountain Standard Time (US) is in force at UTC-7 through the winter months; outside that window the same zone is on MDT (UTC-6).

Does EST observe daylight saving time?

EST is itself the standard-time form. Eastern Standard Time (US) is in force at UTC-5 through the winter months; outside that window the same zone is on EDT (UTC-4).

What time is 3 AM MST in EST?

3:00 AM MST is 5:00 AM EST.

What time is 8 AM MST in EST?

8:00 AM MST is 10:00 AM EST.

What time is 9 AM MST in EST?

9:00 AM MST is 11:00 AM EST.

What time is 10 AM MST in EST?

10:00 AM MST is 12:00 PM EST.

What time is 11 AM MST in EST?

11:00 AM MST is 1:00 PM EST.

What time is 12 PM (noon) MST in EST?

12:00 PM MST is 2:00 PM EST.

What time is 2 PM MST in EST?

2:00 PM MST is 4:00 PM EST.

What time is 3 PM MST in EST?

3:00 PM MST is 5:00 PM EST.

What time is 4 PM MST in EST?

4:00 PM MST is 6:00 PM EST.

What time is 5 PM MST in EST?

5:00 PM MST is 7:00 PM EST.

What time is 9 PM MST in EST?

9:00 PM MST is 11:00 PM EST.

What time is 10 PM MST in EST?

10:00 PM MST is 12:00 AM (next day) EST.

When is the best time to schedule a call between MST and EST?

The working-hours overlap (09:00–17:00 in both zones) runs roughly 9:00 AM – 3:00 PM MST (≈ 6 hours). The midpoint of that window — 12:00 PM MST, 2:00 PM EST — is the safest single slot to propose for a live call.

What time zone does MST refer to?

MST refers to Mountain Standard Time (US) (IANA: America/Denver).

What time zone does EST refer to?

EST refers to Eastern Standard Time (US) (IANA: America/New_York).

Is MST on this page the same as other zones that share the letters "MST"?

MST is Mountain Standard Time (UTC−7). Most of the US Mountain zone switches to MDT (UTC−6) in summer, but Arizona (except the Navajo Nation) stays on MST year-round.

Is EST on this page the same as other zones that share the letters "EST"?

On Clockjumper, EST refers to Eastern Standard Time in the United States (UTC−5). The US East Coast observes EST in winter and switches to EDT (UTC−4) during daylight saving time.

• EST to MST
• AEST to MST
• AEDT to EST
• BST to MST
• AEST to EST
• CDT to MST
• Berlin to EST
• CET to MST
• BST to EST
• CST to MST
• CDT to EST
• EDT to MST
• CEST to EST
• GMT to MST
• CET to EST

• About MST (Mountain Standard Time (US)) →
• About EST (Eastern Standard Time (US)) →
• All timezone conversion pages →
• Explore workday-overlap research →