UTC to London time converter
London is usually 1 hour ahead of UTC, but the gap changes around daylight saving dates. Pick a date and time below, or use the tables to plan a call.
London is 1 hour ahead of UTC.
Live from your device clock using your browser’s time zone data.
- 9:00 AM in UTC is10:00 AM in London
- A 9 am – 5 pm working day in UTC is10:00 AM – 6:00 PM in London
- Best time for a one-hour call (both in working hours)9:00 AM–4:00 PM in UTC (10:00 AM–5:00 PM in London)
Reference date at build time. Tables below cover the whole year.
Convert a specific time
9:00 AM UTC on Thu, Oct 22 is 10:00 AM London on Thu, Oct 22.
Tip: link straight to an answer with ?t=3pm or ?t=15:30&d=2026-10-22. Select any time in the hour-by-hour table below to fill this in.
Time difference through 2026
3 periods with a constant difference. The unusual periods last 87 days and 68 days: check meetings in those weeks.
| Dates in UTC | London vs UTC | 9:00 AM in UTC is | Best one-hour call, UTC time |
|---|---|---|---|
| Jan 1 – Mar 29 87 days | the same time as UTC+0 → UTC+0 | 9:00 AM | 9:00 AM–5:00 PM Within 9–5 for both |
| Mar 29 – Oct 25 210 days | 1 hour ahead UTC+0 → UTC+1 | 10:00 AM | 9:00 AM–4:00 PM Within 9–5 for both |
| Oct 25 – Dec 31 68 days | the same time as UTC+0 → UTC+0 | 9:00 AM | 9:00 AM–5:00 PM Within 9–5 for both |
Periods are split at every clock change in either place, calculated from the IANA time zone database at build time. The 9:00 AM and call examples use the middle date of each period. Future rules can change.
Hour-by-hour: UTC to London
Every hour of the chosen day in UTC, with working hours marked on both sides.
Showing 2026-10-22. Repeated hours after a clock change list both occurrences.
| UTC | London | Date in London |
|---|---|---|
| 1:00 AM | Thu, Oct 22 | |
| 2:00 AM | Thu, Oct 22 | |
| 3:00 AM | Thu, Oct 22 | |
| 4:00 AM | Thu, Oct 22 | |
| 5:00 AM | Thu, Oct 22 | |
| 6:00 AM | Thu, Oct 22 | |
| 7:00 AM | Thu, Oct 22 | |
| 8:00 AM | Thu, Oct 22 | |
| 9:00 AM | Thu, Oct 22 | |
| 10:00 AM | Thu, Oct 22 | |
| 11:00 AM | Thu, Oct 22 | |
| 12:00 PM | Thu, Oct 22 | |
| 1:00 PM | Thu, Oct 22 | |
| 2:00 PM | Thu, Oct 22 | |
| 3:00 PM | Thu, Oct 22 | |
| 4:00 PM | Thu, Oct 22 | |
| 5:00 PM | Thu, Oct 22 | |
| 6:00 PM | Thu, Oct 22 | |
| 7:00 PM | Thu, Oct 22 | |
| 8:00 PM | Thu, Oct 22 | |
| 9:00 PM | Thu, Oct 22 | |
| 10:00 PM | Thu, Oct 22 | |
| 11:00 PM | Thu, Oct 22 | |
| 12:00 AM | Fri, Oct 23next day |
9 am – 5 pm7–9 am, 5–9 pmNightShaded rows: working hours in both places
Public holidays in the next 60 days
National holidays in the United Kingdom. A call that works on the clock may still land on a day off. The planner above skips these dates when “Skip public holidays” is on.
No national public holidays in the next 60 days.
Questions about UTC and London time
What is the time difference between UTC and London?
It depends on the date. For most of 2026, London is 1 hour ahead of UTC. From Jan 1 – Mar 29, it is the same time as UTC. From Oct 25 – Dec 31, it is the same time as UTC.
The difference changes because London changes its clocks while the other does not.
What time is it in London when it is noon in UTC?
When London is the same time as UTC: 12:00 PM in UTC is 12:00 PM in London.
When London is 1 hour ahead of UTC: 12:00 PM in UTC is 1:00 PM in London.
When is the best time to call London from UTC?
On a typical weekday, start a one-hour call between 9:00 AM–4:00 PM in UTC (10:00 AM–5:00 PM in London). Both sides are inside 9 am – 5 pm.
Switch the converter above to Meeting planner to set your own working hours and meeting length, or exclude weekends.
Do UTC and London use daylight saving time?
UTC keeps UTC+0 all year, with no clock changes in 2026.
London changes its clocks 2 times in 2026: forward on Sunday, March 29, 2026 (UTC+0 → UTC+1); back on Sunday, October 25, 2026 (UTC+1 → UTC+0).
Which time zone identifiers should I use in a calendar?
UTC: UTC. London: Europe/London. City identifiers carry the daylight saving rules, so a recurring event keeps its local time.