Time Difference: New York and London
London is 5 hours ahead of New York for most of the year. 9:00 AM in New York is 2:00 PM in London, or 1:00 PM in the few weeks when the gap is 4 hours.
The Year in Four Stretches
London is always ahead of New York, by 4 or 5 hours, and the gap follows both cities' clock changes:
- Early January to the second Sunday in March: 5 hours (both on winter time).
- Second Sunday to last Sunday in March: 4 hours (New York on EDT, London still on GMT).
- Last Sunday in March to the last Sunday in October: 5 hours (both on summer time).
- Last Sunday to the first Sunday in November: 4 hours (London back on GMT, New York still on EDT), then 5 hours until the new year.
The New York Morning Is the Overlap
On 9-to-5 days both teams are at work together only for the New York morning: 9:00 AM to 12:00 PM in New York is 2:00 PM to 5:00 PM in London, 3 hours in all. After noon in New York London has passed its 5:00 PM close. In the 4-hour weeks the same morning is 1:00 PM to 4:00 PM in London, an hour earlier.
| New York | London (EST → GMT) | London (EDT → BST) | London (EDT → GMT) |
|---|---|---|---|
| 8:00 AM | 1:00 PM | 1:00 PM | 12:00 PM |
| 9:00 AM | 2:00 PM ✓ | 2:00 PM ✓ | 1:00 PM ✓ |
| 10:00 AM | 3:00 PM ✓ | 3:00 PM ✓ | 2:00 PM ✓ |
| 11:00 AM | 4:00 PM ✓ | 4:00 PM ✓ | 3:00 PM ✓ |
| 12:00 PM | 5:00 PM | 5:00 PM | 4:00 PM ✓ |
| 1:00 PM | 6:00 PM | 6:00 PM | 5:00 PM |
| 2:00 PM | 7:00 PM | 7:00 PM | 6:00 PM |
| 3:00 PM | 8:00 PM | 8:00 PM | 7:00 PM |
| 4:00 PM | 9:00 PM | 9:00 PM | 8:00 PM |
| 5:00 PM | 10:00 PM | 10:00 PM | 9:00 PM |
| 6:00 PM | 11:00 PM | 11:00 PM | 10:00 PM |
Each row is an hour of the New York day. A check mark means both cities are inside a 9 AM to 5 PM working day at that moment.
- EST → GMT: 3 hours shared, 9:00 AM to 12:00 PM New York time.
- EDT → BST: 3 hours shared, 9:00 AM to 12:00 PM New York time.
- EDT → GMT: 4 hours shared, 9:00 AM to 1:00 PM New York time.
Do Not Carry a Remembered 5 Hours Into the Wrong Weeks
A call fixed at 10:00 AM New York time is 3:00 PM in London most of the year and 2:00 PM in the 4-hour weeks, so London may join an hour early or late if nobody checks. Put both times in the invite.
The same goes the other way: a 2:00 PM London call is 9:00 AM in New York in most weeks and 10:00 AM in the short windows. A recurring series is safe in either city's time as long as you check the week of each change.
New York Time in London, Every Hour
Each column is one real season of the New York-London gap. Pick the column that matches your date.
| 🇺🇸 New York (ET) | 🇬🇧 London (EST → GMT) | 🇬🇧 London (EDT → BST) | 🇬🇧 London (EDT → GMT) |
|---|---|---|---|
| 00:00 | 05:00 | 05:00 | 04:00 |
| 03:00 | 08:00 | 08:00 | 07:00 |
| 06:00 | 11:00 | 11:00 | 10:00 |
| 09:00 | 14:00 | 14:00 | 13:00 |
| 12:00 | 17:00 | 17:00 | 16:00 |
| 15:00 | 20:00 | 20:00 | 19:00 |
| 18:00 | 23:00 | 23:00 | 22:00 |
| 21:00 | 02:00(next day) | 02:00(next day) | 01:00(next day) |
- EST → GMT: first Sunday in November to second Sunday in March, while both are on standard time
- EDT → BST: last Sunday in March to last Sunday in October, while both are on summer time
- EDT → GMT: a few weeks from the second Sunday in March, and about a week from the last Sunday in October, when only the US is on summer time
* "next day" / "prev day" = the converted time falls on a different calendar date.
A New York Team Booking London
A New York team that books a call with London at 9:30 AM reaches 2:30 PM in most weeks and 1:30 PM in the 4-hour weeks. If London hosts at 4:00 PM, New York joins at 11:00 AM most weeks and 12:00 PM in the short windows.
A fixed New York-time series therefore reaches London an hour earlier in the weeks after the US changes and before the UK does. Confirm the London time in the invite that week.