Time in London, United Kingdom
Monday, September 21, 2026
When London changes its clocks
London is one of the places that still shifts its clocks twice a year
London keeps Greenwich Mean Time at UTC+00:00 for most of the year, and moves to British Summer Time at UTC+01:00 during its summer. The shift is 1 hour.
Next change
25 October 2026 — clocks move back by 1 hour, from UTC+01:00 to UTC+00:00.
Upcoming transition dates
- 29 March 2026 — forward to UTC+01:00
- 25 October 2026 — back to UTC+00:00
- 28 March 2027 — forward to UTC+01:00
- 31 October 2027 — back to UTC+00:00
- 26 March 2028 — forward to UTC+01:00
- 29 October 2028 — back to UTC+00:00
When the gap to London changes
Dates in the next year where the difference shifts, by counterpart city
The difference between two cities is not a constant. It changes whenever either side moves its clocks — and because regions switch on different dates, there are short windows each year when the usual gap is wrong. These are the dates that matter for London:
New York (United States)
- From 25 October 2026: London is 4 hours ahead of New York
- From 1 November 2026: London is 5 hours ahead of New York
- From 14 March 2027: London is 4 hours ahead of New York
- From 28 March 2027: London is 5 hours ahead of New York
Dubai (United Arab Emirates)
- From 25 October 2026: London is 4 hours behind Dubai
- From 28 March 2027: London is 3 hours behind Dubai
Singapore (Singapore)
- From 25 October 2026: London is 8 hours behind Singapore
- From 28 March 2027: London is 7 hours behind Singapore
Daylight and the sun over London
London sits at 51.51°, -0.13°
Longest day
16h 38m of daylight
Shortest day
7h 50m of daylight
Yearly swing
8h 49m between them
That is a swing of 8h 49m between midsummer and midwinter — a large seasonal difference. In practice it means an afternoon call with London lands in broad daylight in June and well after dark in December, even though the clock time has not moved.
Clock time versus solar time
London's clock is unusually well matched to the sun: local noon falls within 1 minute of the moment the sun is actually overhead. Most cities sit further out, because time zones follow borders rather than longitude.
During summer time that gap widens to 1 hour 1 minute ahead of the sun, which is the whole point of the exercise — shifting daylight into the evening.
Quick Time Comparisons
See how London time compares to other major cities right now
Time Zone Offset from London
Best Times to Contact London
Optimal calling and meeting hours
Business Hours
Typically 9:00 AM - 5:00 PM local time
Best for professional calls, meetings, and business inquiries
Personal Calls
Evenings 7:00 PM - 10:00 PM local time
Ideal for catching up with family and friends
Pro Tip: Use the meeting coordinator tool above to find overlapping working hours between your location and London. This makes scheduling international meetings much easier!
Cultural Business Context
London, United Kingdom • 10:24 local time
Great Time!
Good time for business communication
Quick Stats
Business Hours Timeline
Best Times to Contact
Times to Avoid
Business hours: 09:00 - 17:30 | Weekend: Sunday, Saturday | Lunch: 12:30 - 13:30
🌍 Cultural awareness enhances business relationships and prevents scheduling conflicts across global teams
Places related to London
Cities that share a clock, a country, or an offset
On exactly the same clock as London
These share the Europe/London zone, so they keep the same time as London and change their clocks on the same dates.
Same offset (UTC+00:00), different part of the world
These sit in other countries but keep the same standard offset as London (Greenwich Mean Time). They will not necessarily change clocks on the same dates, so the match can be seasonal rather than permanent.
Meeting Time Coordinator
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Common Questions About London Time
Frequently asked questions
What time zone is London in?
London operates in the Europe/London time zone, known as Greenwich Mean Time, currently UTC+00:00 (UTC+01:00 during summer time). This clock applies that offset directly from the IANA time zone database.
Does London observe daylight saving time?
Yes. London shifts its clocks by 1 hour, between UTC+00:00 and UTC+01:00. The next change is on 25 October 2026.
What's the time difference between London and my location?
The time comparison tool above shows the current time difference. You can also use our meeting coordinator to find the best times for calls across different time zones.
How accurate is this London clock?
Our clock synchronizes with your device's time and applies the official Europe/London time zone offset. It updates every second and automatically handles daylight saving time, ensuring accuracy within a second.
Can I use this for scheduling meetings in London?
Yes! This tool is perfect for scheduling. Use the meeting coordinator above to compare multiple time zones and find optimal meeting times that work for everyone in London and other locations.
Time Zone Facts About London
Interesting information about London's time
IANA identifier
Europe/London
Standard time name
Greenwich Mean Time
Standard offset
UTC+00:00
Daylight saving
Observed — clocks shift 1 hour to UTC+01:00
Region
Europe
Population
9,648,110