London
United Kingdom Reference
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Time in London.
United Kingdom · GMT/BST · Europe/London
London is on Greenwich Mean Time (GMT, UTC+0) until Sunday, March 28, 2027, when the clocks go forward an hour to British Summer Time (BST, UTC+1). Right now it’s 5 hours ahead of New York and 9 hours behind Tokyo.
Times checked against the IANA time zone database. How WherOra calculates times
New York
United States
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Find your overlap.
Comparing working hours · 8 AM–5 PM in each city
Daily hours, including weekends. Public holidays are not checked. Daylight saving guide → · Plan fair meetings
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Working hoursOutside workNight · 7 PM–7 AMShared hoursYour meeting
Checking shared working hours…
All timelines share one moment. Dates follow London. Daytime is 7 AM–7 PM, not sunrise/sunset.
Time zone in London
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer.
- Time zone
- Greenwich Mean Time (GMT) / British Summer Time (BST)
- UTC offset
- UTC+0 (standard) · UTC+1 (summer)
- Daylight saving
- Yes
- IANA zone
- Europe/London
Clock changes in London, 2026–2027
- Sunday, March 29, 2026: clocks go forward one hour at 1:00 AM, to 2:00 AM (BST, UTC+1)
- Sunday, October 25, 2026: clocks go back one hour at 2:00 AM, to 1:00 AM (GMT, UTC+0)
- Sunday, March 28, 2027: clocks go forward one hour at 1:00 AM, to 2:00 AM (BST, UTC+1)
- Sunday, October 31, 2027: clocks go back one hour at 2:00 AM, to 1:00 AM (GMT, UTC+0)
Other countries change on different dates, so the gap between cities can shift for a week or more. See how daylight saving affects meetings.
Plan meetings with London
Shared working hours and time differences for popular pairs:
- Chicago to London time
- Dallas to London time
- London to Dubai time
- London to Singapore time
- London to Tokyo time
- New York to London time
- Toronto to London time
Run a website, blog or intranet? Add a free London clock to your site. It keeps the right time on its own.
To compare London with any other place, use the clock above: press + Add city, or set a date and drag the timeline to check a future meeting. Convert a specific time or plan a meeting for up to six cities.
London: quick answers
What time zone is London in?
London uses Greenwich Mean Time (GMT, UTC+0) as standard time and British Summer Time (BST, UTC+1) during daylight saving time. On phones and computers its time zone is called Europe/London.
Does London observe daylight saving time?
Yes. Clocks in London go forward one hour on Sunday, March 28, 2027, and back one hour on Sunday, October 31, 2027.
What time is it in London when it’s 9 AM in New York?
2:00 PM in London. London is 5 hours ahead of New York right now. From March 14, when New York changes its clocks, 9 AM in New York is 1:00 PM in London.
Compare city pairs
See shared working hours for all pairs →North America ↔ Europe
North America ↔ Asia & Pacific
Europe ↔ Asia & Middle East
Badges show how far ahead or behind the second city is today.