What is the time difference between GMT and EST?

GMT is 5 hours behind EST. GMT is UTC+0 and EST is UTC-5.

What are the best meeting times between GMT and EST?

Best overlap hours: 12 PM GMT = 8 AM EST; 1 PM GMT = 9 AM EST; 2 PM GMT = 10 AM EST; 3 PM GMT = 11 AM EST; 4 PM GMT = 12 PM EST.

GMT to EST Time Conversion

Greenwich Mean Time → Eastern Standard Time

GMT

UTC+0

Greenwich Mean Time

offset

-5h

EST is 5h behind

EST

UTC-5

Eastern Standard Time

Both GMT and EST observe DST — offset may shift ±1h during transitions

Greenwich Mean Time (GMT) is 5 hours behind Eastern Standard Time (EST). When it is noon in GMT, it is 8 AM in EST. This offset may change during Daylight Saving Time.

Meeting planner tool Reverse: EST to GMT

All 24 Hours — GMT to EST

Click any row to see the full detail page for that hour

Both business hoursPartial overlapOff hours

12 AM6 AM12 PM6 PM11 PM

Frequently Asked Questions — GMT to EST

Greenwich Mean Time (GMT) is 5 hours behind Eastern Standard Time (EST). GMT is UTC+0 and EST is UTC-5. This offset may shift by ±1 hour during Daylight Saving Time transitions.