Convert GMT to ET
Greenwich Mean Time (GMT) to Eastern Time (ET)
The London-New York business corridor is one of the busiest in the world. Finance teams, law firms, and agencies crossing the Atlantic search this heavily. The tricky part is that the US springs forward about three weeks before the UK switches to BST, creating a temporary 4-hour window instead of the usual 5.
When it's 12:00 PM GMT, it's 8:00 AM ET
Interactive Converter
Pick any time and date to convert between GMT and ET.
GMT to ET Conversion Table
Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.
| GMT | ET |
|---|---|
| 12:00 AM | 8:00 PM -1 day |
| 1:00 AM | 9:00 PM -1 day |
| 2:00 AM | 10:00 PM -1 day |
| 3:00 AM | 11:00 PM -1 day |
| 4:00 AM | 12:00 AM |
| 5:00 AM | 1:00 AM |
| 6:00 AM | 2:00 AM |
| 7:00 AM | 3:00 AM |
| 8:00 AM | 4:00 AM |
| 9:00 AM | 5:00 AM |
| 10:00 AM | 6:00 AM |
| 11:00 AM | 7:00 AM |
| 12:00 PM | 8:00 AM |
| 1:00 PM | 9:00 AM |
| 2:00 PM | 10:00 AM |
| 3:00 PM | 11:00 AM |
| 4:00 PM | 12:00 PM |
| 5:00 PM | 1:00 PM |
| 6:00 PM | 2:00 PM |
| 7:00 PM | 3:00 PM |
| 8:00 PM | 4:00 PM |
| 9:00 PM | 5:00 PM |
| 10:00 PM | 6:00 PM |
| 11:00 PM | 7:00 PM |
Best Meeting Window
Top meeting times for teams in GMT and ET (9 AM -- 6 PM work hours, 1-hour meeting).
All members within working hours. Everyone in mid-day range. Note: 1 timezone(s) have a DST transition within 14 days.
All members within working hours. Everyone in mid-day range. Note: 1 timezone(s) have a DST transition within 14 days.
All members within working hours. Everyone in mid-day range. Note: 1 timezone(s) have a DST transition within 14 days.
Scheduling Tips
- The best overlap window is 2:00-5:00 PM GMT / 9:00 AM-12:00 PM EST -- both sides are in core working hours.
- Watch out for the 2-3 week DST gap in March and November when the offset shifts from 5 to 4 hours (or vice versa). Double-check recurring meetings during these windows.
- For end-of-day syncs, 5:00 PM GMT / 12:00 PM EST gives London a wrap-up and New York a midday check-in.
Time Difference & DST
ET is 4 hours behind GMT. GMT is at UTC±0 and ET is at UTC-4.
Upcoming DST Transitions:
The conversion table above reflects the current DST state at build time. Use the interactive converter for live, date-specific conversions.
Major Cities
Greenwich Mean Time (GMT)
- London
- Manchester
- Birmingham
Eastern Time (ET)
- New York
- Miami
- Atlanta
Frequently Asked Questions
What is the time difference between GMT and EST?
When does the time difference between London and New York change?
What is BST and how does it relate to GMT?
Related Guides
Learn what DST is, which countries observe it, and how clock changes affect distributed team scheduling across time zones.
Scheduling Across Time Zones: Best Practices for Global TeamsProven strategies for scheduling meetings across multiple time zones. Reduce late-night calls and improve team fairness.
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