Eastern Time is 5 hours behind UK Time right now (until Oct 24, 2026); the gap changes to 4 hours when clocks change for daylight saving time. So 12:00 PM BST = 7:00 AM EDT at the moment. (UK Time is on BST and Eastern Time is on EDT for daylight saving time right now.)
GMT to EST conversion table
| GMT | EDT when GMT is BST | EDT when GMT is GMT |
|---|---|---|
| 12:00 AM | 7:00 PM −1 day | 8:00 PM −1 day |
| 1:00 AM | 8:00 PM −1 day | 9:00 PM −1 day |
| 2:00 AM | 9:00 PM −1 day | 10:00 PM −1 day |
| 3:00 AM | 10:00 PM −1 day | 11:00 PM −1 day |
| 4:00 AM | 11:00 PM −1 day | 12:00 AM |
| 5:00 AM | 12:00 AM | 1:00 AM |
| 6:00 AM | 1:00 AM | 2:00 AM |
| 7:00 AM | 2:00 AM | 3:00 AM |
| 8:00 AM | 3:00 AM | 4:00 AM |
| 9:00 AM | 4:00 AM | 5:00 AM |
| 10:00 AM | 5:00 AM | 6:00 AM |
| 11:00 AM | 6:00 AM | 7:00 AM |
| 12:00 PM | 7:00 AM | 8:00 AM |
| 1:00 PM | 8:00 AM | 9:00 AM |
| 2:00 PM | 9:00 AM | 10:00 AM |
| 3:00 PM | 10:00 AM | 11:00 AM |
| 4:00 PM | 11:00 AM | 12:00 PM |
| 5:00 PM | 12:00 PM | 1:00 PM |
| 6:00 PM | 1:00 PM | 2:00 PM |
| 7:00 PM | 2:00 PM | 3:00 PM |
| 8:00 PM | 3:00 PM | 4:00 PM |
| 9:00 PM | 4:00 PM | 5:00 PM |
| 10:00 PM | 5:00 PM | 6:00 PM |
| 11:00 PM | 6:00 PM | 7:00 PM |
GMT and EST difference through 2027
The gap between the two zones on each date range, including daylight saving time changes:
| Dates | UK Time | Eastern Time | Difference |
|---|---|---|---|
| Sep 30, 2026 – Oct 24, 2026 | BST (UTC+1) | EDT (UTC−4) | EST 5 hours behind |
| Oct 25, 2026 – Oct 31, 2026 | GMT (UTC+0) | EDT (UTC−4) | EST 4 hours behind |
| Nov 1, 2026 – Mar 13, 2027 | GMT (UTC+0) | EST (UTC−5) | EST 5 hours behind |
| Mar 14, 2027 – Mar 27, 2027 | GMT (UTC+0) | EDT (UTC−4) | EST 4 hours behind |
| Mar 28, 2027 – Oct 30, 2027 | BST (UTC+1) | EDT (UTC−4) | EST 5 hours behind |
| Oct 31, 2027 – Nov 6, 2027 | GMT (UTC+0) | EDT (UTC−4) | EST 4 hours behind |
| Nov 7, 2027 – Dec 31, 2027 | GMT (UTC+0) | EST (UTC−5) | EST 5 hours behind |
Best time to meet or call
- When EST is 5 hours behind GMT: Working hours (9 AM–5 PM) overlap from 2:00 PM–5:00 PM GMT (9:00 AM–12:00 PM EST), about 3 hours.
- When EST is 4 hours behind GMT: Working hours (9 AM–5 PM) overlap from 1:00 PM–5:00 PM GMT (9:00 AM–1:00 PM EST), about 4 hours.
About UK Time (GMT)
The UK uses GMT (UTC+0) in winter and British Summer Time, BST (UTC+1), from the last Sunday in March to the last Sunday in October. It's used in London, Manchester, Birmingham, Edinburgh, Cardiff and Belfast.
About Eastern Time (EST)
The Eastern time zone uses EST (UTC−5) in winter and EDT (UTC−4) during daylight saving time, from the second Sunday in March to the first Sunday in November. It's used in New York, Washington DC, Boston, Atlanta, Miami, Detroit and Toronto.
Frequently asked questions
What time is 12 PM GMT in EST?
12:00 PM BST is 7:00 AM EDT right now (Sep 30, 2026 to Oct 24, 2026). The answer changes when either zone changes its clocks for daylight saving time.
How many hours ahead or behind is EST from GMT?
Currently 5 hours behind GMT. During the year the difference is 5 hours behind GMT or 4 hours behind GMT, depending on daylight saving time. See the table on this page for exact dates.
Does GMT change for daylight saving time?
Yes. The UK uses GMT (UTC+0) in winter and British Summer Time, BST (UTC+1), from the last Sunday in March to the last Sunday in October.
Does EST change for daylight saving time?
Yes. The Eastern time zone uses EST (UTC−5) in winter and EDT (UTC−4) during daylight saving time, from the second Sunday in March to the first Sunday in November.
What is the best time for a call between GMT and EST?
Right now, working hours overlap from 2:00 PM–5:00 PM GMT (9:00 AM–12:00 PM EST), about 3 hours.
More time zone conversions
- EST to GMT (reverse)
- PST to EST
- CST to EST
- MST to EST
- IST to EST
- GMT to IST
- GMT to PST
- UTC to EST
- CET to EST
- All time zones
Sources
Reviewed by Gurmej Singh, Founder, Divy Digital Hub · Last reviewed: Wednesday, September 30, 2026. All calculations run in your browser. Editorial policy.