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New York to London Time Converter

London is usually 5 hours ahead of New York, so 9:00 AM in New York is normally 2:00 PM in London. For a few weeks each year the gap is 4 hours instead, because the US and the UK change their clocks on different dates.

EDT · UTC−4
Mon, Oct 19
BST · UTC+1
Mon, Oct 19

On Monday, October 19, London is 5 hours ahead of New York.

Heads-up: clocks in London go back on Sunday, October 25. After that, London is 4 hours ahead of New York.

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Time zone rules checked October 2026. The converter runs on your device using its built-in time zone database, so it accounts for daylight saving time on any date you pick.

New York and London, hour by hour

Green rows are the hours when both cities are inside an ordinary 9-to-5 working day. Change the date in the converter and this table follows it.

Hour by hour for Monday, October 19, 2026 in New York
New York EDTLondon BSTOffice hours (9 AM to 5 PM, local weekdays)
12:00 AM5:00 AM
1:00 AM6:00 AM
2:00 AM7:00 AM
3:00 AM8:00 AM
4:00 AM9:00 AMLondon only
5:00 AM10:00 AMLondon only
6:00 AM11:00 AMLondon only
7:00 AM12:00 PMLondon only
8:00 AM1:00 PMLondon only
9:00 AM2:00 PMBoth working
10:00 AM3:00 PMBoth working
11:00 AM4:00 PMBoth working
12:00 PM5:00 PMNew York only
1:00 PM6:00 PMNew York only
2:00 PM7:00 PMNew York only
3:00 PM8:00 PMNew York only
4:00 PM9:00 PMNew York only
5:00 PM10:00 PM
6:00 PM11:00 PM
7:00 PM12:00 AM next day
8:00 PM1:00 AM next day
9:00 PM2:00 AM next day
10:00 PM3:00 AM next day
11:00 PM4:00 AM next day

The best time for a call

If both sides keep roughly 9-to-5 hours, you get 3 hours of overlap on a normal weekday: 9:00 AM to 12:00 PM in New York, which is 2:00 PM to 5:00 PM in London.

When the gap is 4 hours, the overlap grows to 4 hours: 9:00 AM to 1:00 PM in New York.

The transatlantic window is the New York morning. A 10 or 11 a.m. start in New York lands mid-afternoon in London, which is why so many US–UK calls end up there. Push much past 12:30 p.m. Eastern and you’re into London’s evening commute.

The weeks to watch are the ones when the gap shrinks to four hours, in March and again at the end of October. A recurring invite created in New York keeps its New York time, so for those few weeks it shows up an hour earlier for everyone in London. Somebody always misses the first one.

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Why the time difference changes

Both cities use daylight saving time, but they don’t switch on the same weekend. In the US, clocks go forward on the second Sunday in March and back on the first Sunday in November. In the UK, clocks go forward on the last Sunday in March and back on the last Sunday in October. In the weeks between the two changes, one city has moved its clocks and the other hasn’t, so the difference is an hour off its usual figure.

This catches people out every year, mostly with recurring meetings. Calendar apps keep a recurring event at the organiser’s local time, so for those few weeks it lands an hour earlier or later for everyone else.

London compared with New York, Oct 19, 2026 to Oct 19, 2027
FromUntilLondon is9:00 AM in New York is
TodayOct 25, 20265 hours ahead2:00 PM BST
Oct 25, 2026Nov 1, 20264 hours ahead1:00 PM GMT
Nov 1, 2026Mar 14, 20275 hours ahead2:00 PM GMT
Mar 14, 2027Mar 28, 20274 hours ahead1:00 PM GMT
Mar 28, 2027—5 hours ahead2:00 PM BST

The two time zones

New York

Time zone
Eastern Time (EST / EDT)
UTC offset
UTC−5, or UTC−4 in summer
Daylight saving
Clocks go forward on the second Sunday in March and back on the first Sunday in November.
Next change
Nov 1, 2026 (clocks go back)
IANA zone
America/New_York

London

Time zone
UK time (GMT / BST)
UTC offset
UTC+0, or UTC+1 in summer
Daylight saving
Clocks go forward on the last Sunday in March and back on the last Sunday in October.
Next change
Oct 25, 2026 (clocks go back)
IANA zone
Europe/London

Common questions

What time is it in London when it’s 9 AM in New York?

Usually 2:00 PM. During the few weeks when the clocks are out of step it’s 1:00 PM. The converter at the top of this page applies the right rule for whatever date you choose.

Is London always 5 hours ahead of New York?

No. Over the next twelve months it’s 5 hours most of the time, but it changes for a few weeks: Oct 25 until Nov 1, 2026 (4 hours) and Mar 14 until Mar 28, 2027 (4 hours). That’s down to daylight saving time, explained above.

What’s a good time for a meeting between New York and London?

If both sides keep roughly 9-to-5 hours, you get 3 hours of overlap on a normal weekday: 9:00 AM to 12:00 PM in New York, which is 2:00 PM to 5:00 PM in London.

Is London a day ahead of New York?

For part of the day, yes. On a typical day, from about 7:00 PM in New York onwards it’s already the next day in London. The converter and hour-by-hour table flag this with a “next day” label.

Need more than two cities? The World Time Grid lines up to five locations side by side, so you can see everyone’s day at once.

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