4 PM MST to EST
4 PM MST is 6 PM EST. Most East Coast offices have closed for the day.
Eastern is 2 hours later than Mountain. For a different time use the converter on the homepage.
If your shift is 7 AM to 4 PM MT that is 9 AM to 6 PM ET.
4 PM Mountain Time in Eastern Time
| Season & Location | Equivalent Time |
|---|---|
| Winter, Denver (MST to EST) | 6:00 PM EST |
| Summer, Denver (MDT to EDT) | 6:00 PM EDT |
| Phoenix in summer (MST to EDT) | 7:00 PM EDT |
| UTC in winter | 23:00 |
| UTC in summer | 22:00 |
Denver and New York always change clocks on the same day.
Have an Eastern time instead? 6 PM EST is 4 PM MST. The Eastern to Mountain tool converts the rest.
Nearby times
| Mountain Time (MST) | Eastern Time (EST) |
|---|---|
| 4:00 PM MST | 6:00 PM EST |
| 4:15 PM MST | 6:15 PM EST |
| 4:30 PM MST | 6:30 PM EST |
| 4:45 PM MST | 6:45 PM EST |
What 6 PM Eastern means
Most offices in New York and Miami have closed by 6 PM Eastern. An email sent now will likely be read the next morning. 9 AM Eastern is 7 AM Mountain so an early reply can reach you before your own day starts. If you need to talk live with an East Coast team move the call to before 3 PM Mountain. The scheduling planner for both zones helps you pick a time.
Arizona
Arizona keeps Mountain Standard Time all year. 4 PM in Phoenix is 6 PM Eastern in winter and 7 PM Eastern in summer. Learn more on the Arizona and Eastern time page.
Daylight saving time
Summer does not change this for Denver. 4 PM MDT is 6 PM EDT. Read how DST works for both zones.
4 PM MST to EST FAQ
Are New York offices still open at 4 PM Mountain?
Most are not. It is 6 PM Eastern and a 9 to 5 office closed an hour ago.
What is 6 PM EST in Mountain Time?
6 PM EST is 4 PM MST. In summer 6 PM EDT is 4 PM MDT.
What is 4 PM Arizona time in Eastern Time?
It is 6 PM Eastern in winter and 7 PM Eastern in summer. Arizona keeps MST all year.
When will an East Coast reply reach me if I email at 4 PM Mountain?
Often the next morning. If they start at 9 AM Eastern you may see a reply from 7 AM Mountain.
Earlier: 3 PM MST to EST. Later: 5 PM MST to EST. For every hour see the MST to EST conversion chart.
Related Tools & Time Zone Guides
Explore specialized converters and scheduling calculators for Mountain and Eastern Time.
Full Conversion Table
Browse all 24 hours side-by-side with 12h/24h toggle and day-shift markers.
Daylight Saving Time (DST) Rules
Check transition dates for 2024-2027 and MDT vs EDT rules.