Coordinated Universal Time
UTC means UTC throughout the year.
TIME ZONE CONVERTER
UTC to London
Time Converter
Convert Coordinated Universal Time to London, United Kingdom. Compare dates, seasonal differences and meeting hours.
UTC is 0h or 1h behind London in 2026, depending on the date.
9 AM UTC = 9 AM London
Selected date: November 4, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVUTC to London conversion table
November 4, 2026 · Date changes are marked.
View the full 24-hour table
| UTC | London |
|---|---|
| 12:00 AM | 12:00 AM |
| 1:00 AM | 1:00 AM |
| 2:00 AM | 2:00 AM |
| 3:00 AM | 3:00 AM |
| 4:00 AM | 4:00 AM |
| 5:00 AM | 5:00 AM |
| 6:00 AM | 6:00 AM |
| 7:00 AM | 7:00 AM |
| 8:00 AM | 8:00 AM |
| 9:00 AM | 9:00 AM |
| 10:00 AM | 10:00 AM |
| 11:00 AM | 11:00 AM |
| UTC | London |
|---|---|
| 12:00 PM | 12:00 PM |
| 1:00 PM | 1:00 PM |
| 2:00 PM | 2:00 PM |
| 3:00 PM | 3:00 PM |
| 4:00 PM | 4:00 PM |
| 5:00 PM | 5:00 PM |
| 6:00 PM | 6:00 PM |
| 7:00 PM | 7:00 PM |
| 8:00 PM | 8:00 PM |
| 9:00 PM | 9:00 PM |
| 10:00 PM | 10:00 PM |
| 11:00 PM | 11:00 PM |
Starting with the London working day
These examples start on 2026-11-04 in London.
09:00 London09:00 →UTC · 2026-11-04
17:00 London17:00 →UTC · 2026-11-04
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 UTC to London throughout 2026
Keeping 09:00 on the UTC clock produces 2 different destination clock/date answers in 2026. The ranges below use UTC calendar dates, including transition days.
| Dates in UTC · 2026 | London answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 2887 dates | 09:00Same date | UTC → UTC | |
| Mar 29 – Oct 24210 dates | 10:00Same date | UTC → UTC+01:00 | |
| Oct 25 – Dec 3168 dates | 09:00Same date | UTC → UTC |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does UTC time become a different date in London?
Your complete source day: 2026-11-04. Each range shows which destination date to use.
UTC · 2026-11-0400:00–24:00UTC
London · 2026-11-0400:00–24:00UTC Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How London compares with UTC throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
0h
+1h
0h
London changes its UTC offset in 2026. UTC is a fixed offset.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | London vs UTC |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 0h difference |
| 29 Mar 2026, 01:00 UTC | 25 Oct 2026, 01:00 UTC | 1h ahead |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 0h difference |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has London 1h ahead relative to UTC. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with UTC |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | the same time |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | the same time |
PLAN BEYOND A SINGLE DAY
Daily CSVUTC–London working hours through 2026
Every date calculated with your working windows. 261 selected UTC workdays; public holidays are not applied.
Least shared time7h
Most common7h
Most shared time8h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in UTC 09:00–15:00.
These starts fit both working windows on every selected UTC workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
UTC: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. London: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
UTC to London: useful answers
Why is the UTC to London difference sometimes 0 hours and sometimes 1 hour?
UTC is 0h or 1h behind London in 2026, depending on the date. London changes its UTC offset in 2026. UTC is a fixed offset.
Does the UTC–London time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in UTC on 2026-11-04 is 09:00 in London on 2026-11-04. This selected time stays on the same date in both places. Other times can cross midnight.
Can UTC and London meet during working hours?
Your selected working windows share 8h on 2026-11-04. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology