Time zone in London
- Time zone: Greenwich Mean Time
- UTC offset right now: UTC+0
- IANA time zone ID: Europe/London
- Country: United Kingdom
Daylight saving time
London observes daylight saving time. Right now it is on Greenwich Mean Time (UTC+0).
- On Sunday, March 28, 2027, clocks in London go forward one hour, to UTC+1.
- On Sunday, October 31, 2027, clocks in London go back one hour, to UTC+0.
Good to know
London is home to Greenwich, the reference point for world time. The UK uses Greenwich Mean Time (UTC+0) in winter and British Summer Time (UTC+1) in summer.
London compared to other cities
| City | Time now | vs. London |
|---|---|---|
| New York | — | 5 hrs behind |
| Los Angeles | — | 8 hrs behind |
| Chicago | — | 6 hrs behind |
| Paris | — | 1 hr ahead |
| Dubai | — | 4 hrs ahead |
| Mumbai | — | 5 hrs 30 min ahead |
| Tokyo | — | 9 hrs ahead |
| Sydney | — | 11 hrs ahead |
Planning a call? Use the time zone converter to check any time of day.
Calling London
Office hours in London and New York overlap for about 3 hours a day, from 9 AM to 12 PM in New York (2 PM to 5 PM in London).
When it's 9 AM in London today, it's New York: Sat 4:00 AM · Dubai: Sat 1:00 PM · Tokyo: Sat 6:00 PM · Sydney: Sat 8:00 PM.