UTC zone
UTC (GMT-0)
London zone
GMT+1 (GMT+1)
Difference
1 hour ahead of UTC
Business overlap
7h (9-5 windows)
Working hours overlap
Each cell is one hour in UTC. Filled cells mark when 9 AM – 5 PM in UTC and London both apply.
7 hours per day
- UTC
- GMT-0
- London
- GMT+1
- Difference
- +1h
- Business overlap
- 7h
Hour-by-hour conversion
Each row shows the matching local time in London for an hour in UTC.
| UTC | London | Day | Window |
|---|---|---|---|
| 12:00 AM | 1:00 AM | same day | — |
| 1:00 AM | 2:00 AM | same day | — |
| 2:00 AM | 3:00 AM | same day | — |
| 3:00 AM | 4:00 AM | same day | — |
| 4:00 AM | 5:00 AM | same day | — |
| 5:00 AM | 6:00 AM | same day | — |
| 6:00 AM | 7:00 AM | same day | — |
| 7:00 AM | 8:00 AM | same day | — |
| 8:00 AM | 9:00 AM | same day | — |
| 9:00 AM | 10:00 AM | same day | Both 9-5 |
| 10:00 AM | 11:00 AM | same day | Both 9-5 |
| 11:00 AM | 12:00 PM | same day | Both 9-5 |
| 12:00 PM | 1:00 PM | same day | Both 9-5 |
| 1:00 PM | 2:00 PM | same day | Both 9-5 |
| 2:00 PM | 3:00 PM | same day | Both 9-5 |
| 3:00 PM | 4:00 PM | same day | Both 9-5 |
| 4:00 PM | 5:00 PM | same day | — |
| 5:00 PM | 6:00 PM | same day | — |
| 6:00 PM | 7:00 PM | same day | — |
| 7:00 PM | 8:00 PM | same day | — |
| 8:00 PM | 9:00 PM | same day | — |
| 9:00 PM | 10:00 PM | same day | — |
| 10:00 PM | 11:00 PM | same day | — |
| 11:00 PM | 12:00 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 4:00 PM in UTC time. That gives you 7 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting UTC time to London time
UTC follows the UTC time zone (currently UTC, GMT-0), while London follows Europe/London (currently GMT+1, GMT+1). London is 1 hour ahead of UTC right now.
London observes daylight saving time, while UTC does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
UTC
Does not observe daylight saving time.
London
- Spring forward · Sunday, March 29, 2026
- Fall back · Sunday, October 25, 2026
Reverse this conversion
London to UTC
Open the converter
Plan a meeting between UTC and London
More conversions from UTC
Frequently asked questions
- How many hours is UTC from London?
- London is 1 hour ahead of UTC right now.
- What time is 9:00 AM UTC in London?
- 9:00 AM in UTC is 10:00 AM in London.
- What time is 5:00 PM UTC in London?
- 5:00 PM in UTC is 6:00 PM in London.
- When do UTC and London business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 7 hours, roughly from 9:00 AM to 4:00 PM in UTC time.
- Does daylight saving time change the difference between UTC and London?
- London observes daylight saving time while UTC does not, so the offset between them changes by one hour twice a year.
Local time page
Time in UTC
Local time page
Time in London