1 AM GMT to EST
Greenwich Mean Time → Eastern Standard Time
Outside business hours
GMT
1 AM
UTC+0
=
EST
9 PM
UTC-4
(-1 day)1 AM GMT (Greenwich Mean Time) equals 9 PM EST (previous day) (Eastern Standard Time). This falls outside typical business hours for one or both regions.
Live — GMT
01:55:08
Wednesday, March 18
UTC+0
Live — EST
21:55:08
Tuesday, March 17
UTC-4
DST activeDaylight Saving Time (DST)
- GMT (Greenwich Mean Time) observes DST — currently not active (standard time).
- EST (Eastern Standard Time) observes DST — currently active (clocks are +1h ahead).
- DST transitions may shift this offset by ±1 hour twice per year.
GMT
- Full name
- Greenwich Mean Time
- UTC offset
- UTC+0
- DST
- Observed (inactive)
- Region
- Europe/Africa
24-Hour Comparison — GMT to EST
Click any row to jump to that hour's page.
12 AM6 AM12 PM6 PM11 PM
GMTESTDayMeeting
12 AM
8 PM
-1d
Off hours
1 AMthis
9 PM
-1d
Off hours
2 AM
10 PM
-1d
Off hours
3 AM
11 PM
-1d
Off hours
4 AM
12 AM
–
Off hours
5 AM
1 AM
–
Off hours
6 AM
2 AM
–
Off hours
7 AM
3 AM
–
Off hours
8 AM
4 AM
–
Early/Late
9 AM
5 AM
–
Early/Late
10 AM
6 AM
–
Early/Late
11 AM
7 AM
–
Early/Late
12 PM
8 AM
–
Good
1 PM
9 AM
–
Good
2 PM
10 AM
–
Good
3 PM
11 AM
–
Good
4 PM
12 PM
–
Good
5 PM
1 PM
–
Good
6 PM
2 PM
–
Good
7 PM
3 PM
–
Early/Late
8 PM
4 PM
–
Early/Late
9 PM
5 PM
–
Early/Late
10 PM
6 PM
–
Early/Late
11 PM
7 PM
–
Off hours
Green = business hours overlap · Amber = partial · Red = off hours
All Hours — GMT to EST
Hub page →GMT ↔ EST Overview
Full 24-hour chart, live clocks, FAQ