Best Meeting Time: GMT & EST
Working hours overlap & scheduling guide — EST is 4 hours behind GMT
5h
Overlap
4h
Difference
Easy
Scheduling
GMT
GMT
UTC+0
EST
EDT
UTC-4
5 overlapping business hours
Best window: 1 PM – 5 PM GMT time
Both in office
One in office
Neither in office
GMT
Office
Office
EST
12 AM
8 PM
1 AM
9 PM
2 AM
10 PM
3 AM
11 PM
4 AM
12 AM
5 AM
1 AM
6 AM
2 AM
7 AM
3 AM
8 AM
4 AM
9 AM
5 AM
10 AM
6 AM
11 AM
7 AM
12 PM
8 AM
1 PM
Best
9 AM
2 PM
Best
10 AM
3 PM
Best
11 AM
4 PM
Best
12 PM
5 PM
Best
1 PM
6 PM
2 PM
7 PM
3 PM
8 PM
4 PM
9 PM
5 PM
10 PM
6 PM
11 PM
7 PM
Complete 24-Hour Conversion — GMT to EST
Scheduling Tips for GMT & EST
- Best window: 1 PM – 5 PM GMT / 9 AM – 1 PM EST
- Send calendar invites with both time zones listed to avoid confusion.
- DST changes can shift the overlap by ±1 hour — always double-check.