EST to GMT Time Converter
Live clocks, hourly reference table, and best meeting times for New York and London.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
Time difference & DST
Greenwich Mean Time is the historical reference point for civil time worldwide and sits 5 hours ahead of Eastern Standard Time. The UK switches to British Summer Time (BST, UTC+1) in the warmer months, while the US East Coast switches to EDT — so the gap between the two remains 5 hours for most of the year but drifts briefly during transition weeks.
Both regions observe DST but on slightly different calendars. The US starts DST two weeks earlier than the UK in spring, and ends one week earlier in autumn, so for roughly three weeks a year the London↔New York offset temporarily narrows to 4 hours.
Best time to schedule a call
London and New York share a solid mid-morning overlap: 8:00 AM–12:00 PM EST is 1:00 PM–5:00 PM GMT (2:00 PM–6:00 PM BST), which is the golden window for transatlantic client calls, standups, and press interviews.
24-hour reference table
Hour-by-hour mapping for today's date. Values update automatically as daylight-saving transitions occur.
| EST (New York) | GMT (London) |
|---|---|
| 12:00 AM | 05:00 AM |
| 01:00 AM | 06:00 AM |
| 02:00 AM | 07:00 AM |
| 03:00 AM | 08:00 AM |
| 04:00 AM | 09:00 AM |
| 05:00 AM | 10:00 AM |
| 06:00 AM | 11:00 AM |
| 07:00 AM | 12:00 PM |
| 08:00 AM | 01:00 PM |
| 09:00 AM | 02:00 PM |
| 10:00 AM | 03:00 PM |
| 11:00 AM | 04:00 PM |
| 12:00 PM | 05:00 PM |
| 01:00 PM | 06:00 PM |
| 02:00 PM | 07:00 PM |
| 03:00 PM | 08:00 PM |
| 04:00 PM | 09:00 PM |
| 05:00 PM | 10:00 PM |
| 06:00 PM | 11:00 PM |
| 07:00 PM | 12:00 AM(Sun, Jul 5) |
| 08:00 PM | 01:00 AM(Sun, Jul 5) |
| 09:00 PM | 02:00 AM(Sun, Jul 5) |
| 10:00 PM | 03:00 AM(Sun, Jul 5) |
| 11:00 PM | 04:00 AM(Sun, Jul 5) |
Frequently asked questions
What is the time difference between EST and GMT?+
GMT is 5 hours ahead of EST. During British Summer Time (BST), London runs 4 hours ahead of EST — and only 4 hours ahead of EDT once the US also shifts forward.
Do both EST and GMT observe daylight saving time?+
Yes, both switch, but on different dates. The US changes in early March and early November, while the UK changes at the end of March and end of October.
When are the best working hours to overlap London and New York?+
8:00 AM–12:00 PM in New York (EST) is 1:00 PM–5:00 PM in London (GMT), which gives four solid hours of shared business time every weekday.