Time in London today
London uses Greenwich Mean Time in winter and British Summer Time in the daylight-saving season. Because North America changes clocks on different weekends, the familiar London–New York difference is not five hours during every week of the year.
The United Kingdom uses Greenwich Mean Time in winter and British Summer Time during the daylight-saving season.
Next clock change in London
A change is expected after March 28, 2027.
Countdown calculated when the page loads.
Business hours and local week
Common office hours are Monday to Friday, about 9:00 AM to 5:30 PM. London is a useful bridge between Asian mornings and North American business hours.
Best time to call London
London afternoons are usually the easiest time for calls with eastern North America; London mornings work better for Dubai, India and much of Asia.
Compare London with up to three participant locations.
Common questions
What time zone is London in?
London uses United Kingdom Time. The IANA identifier used for this clock is Europe/London.
What is the UTC offset for London?
The current reference offset on this page is UTC+00:00. It updates automatically when regional clock rules change.
Does London observe daylight saving time?
London uses seasonal clock changes under current rules. Check the next-change section for the date-aware result.
What is the best time to call London?
London afternoons are usually the easiest time for calls with eastern North America; London mornings work better for Dubai, India and much of Asia.
How accurate is this London clock?
The live clock uses your device time and the browser's implementation of the Europe/London IANA time-zone rules. It updates every second.