Time Difference: London and New York
New York is 5 hours behind London for most of the year. 2:00 PM in London is 9:00 AM in New York, or 10:00 AM in the few weeks when the gap is 4 hours.
Clock changes: The US moves its clocks on the second Sunday in March and the first Sunday in November, the UK on the last Sunday in March and the last Sunday in October. In the weeks between each pair of dates the gap is 4 hours, not 5.
London Afternoons, New York Mornings
London's 2:00 PM to 5:00 PM is 9:00 AM to 12:00 PM in New York in most weeks, the only stretch where both teams are inside a 9-to-5 day. In the 4-hour weeks the same London afternoon is 10:00 AM to 1:00 PM, which opens the shared window an hour earlier in London.
| London | New York (GMT → EST) | New York (BST → EDT) | New York (GMT → EDT) |
|---|---|---|---|
| 8:00 AM | 3:00 AM | 3:00 AM | 4:00 AM |
| 9:00 AM | 4:00 AM | 4:00 AM | 5:00 AM |
| 10:00 AM | 5:00 AM | 5:00 AM | 6:00 AM |
| 11:00 AM | 6:00 AM | 6:00 AM | 7:00 AM |
| 12:00 PM | 7:00 AM | 7:00 AM | 8:00 AM |
| 1:00 PM | 8:00 AM | 8:00 AM | 9:00 AM ✓ |
| 2:00 PM | 9:00 AM ✓ | 9:00 AM ✓ | 10:00 AM ✓ |
| 3:00 PM | 10:00 AM ✓ | 10:00 AM ✓ | 11:00 AM ✓ |
| 4:00 PM | 11:00 AM ✓ | 11:00 AM ✓ | 12:00 PM ✓ |
| 5:00 PM | 12:00 PM | 12:00 PM | 1:00 PM |
| 6:00 PM | 1:00 PM | 1:00 PM | 2:00 PM |
Each row is an hour of the London day. A check mark means both cities are inside a 9 AM to 5 PM working day at that moment.
- GMT → EST: 3 hours shared, 2:00 PM to 5:00 PM London time.
- BST → EDT: 3 hours shared, 2:00 PM to 5:00 PM London time.
- GMT → EDT: 4 hours shared, 1:00 PM to 5:00 PM London time.
London's earlier hours are too early for New York, and after 5:00 PM London has closed.
The Weeks When It Is 4 Hours
Only one side has changed its clocks in these two stretches:
- From the second Sunday in March (New York moves forward) to the last Sunday in March (London follows): 2 to 3 weeks.
- From the last Sunday in October (London moves back) to the first Sunday in November (New York follows): 1 week.
London Time in New York, Every Hour
Each column is one real season of the London-New York gap. Pick the column that matches your date.
| 🇬🇧 London (GMT) | 🇺🇸 New York (GMT → EST) | 🇺🇸 New York (BST → EDT) | 🇺🇸 New York (GMT → EDT) |
|---|---|---|---|
| 00:00 | 19:00(prev day) | 19:00(prev day) | 20:00(prev day) |
| 03:00 | 22:00(prev day) | 22:00(prev day) | 23:00(prev day) |
| 06:00 | 01:00 | 01:00 | 02:00 |
| 09:00 | 04:00 | 04:00 | 05:00 |
| 12:00 | 07:00 | 07:00 | 08:00 |
| 15:00 | 10:00 | 10:00 | 11:00 |
| 18:00 | 13:00 | 13:00 | 14:00 |
| 21:00 | 16:00 | 16:00 | 17:00 |
- GMT → EST: first Sunday in November to second Sunday in March, while both are on standard time
- BST → EDT: last Sunday in March to last Sunday in October, while both are on summer time
- GMT → EDT: 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.
Counting Back From London
From London, take 5 off for New York: 6:00 PM in London is 1:00 PM in New York, and 2:00 PM in the 4-hour weeks. A London-time invite stays put on your side and moves by an hour on the New York side in those windows, so quote the New York time as well.
Booking from London's morning is the usual slip. 10:00 AM in London is 5:00 AM in New York, well before most offices there open. Going the other way, 9:00 AM in New York is 2:00 PM in London in most weeks and 1:00 PM in the 4-hour weeks.
A Weekly Check-In From London
If you book from London, 2:00 PM is 9:00 AM in New York on the usual 5-hour gap. In the weeks between the US change on the second Sunday in March and the UK change on the last Sunday, the same 2:00 PM is 10:00 AM.
The same happens in the week between the UK moving back on the last Sunday in October and the US doing so on the first Sunday in November. New York's 9:00 AM is 2:00 PM in London normally, and 1:00 PM in those weeks.