London to Boulogne-Billancourt: time difference
Boulogne-Billancourt is 1 h ahead of London. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇫🇷 Boulogne-Billancourt, France
09
- Central European Summer Time
- UTC+2
- Night
☀️ 08:13 · 🌙 19:02 · 10 h 49 min
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
London 02:21 2:21 AM Boulogne-Billancourt 03:21 3:21 AM You –:–
02:21 2:21 AM
British Summer Time · UTC+1
☀️ 07:26 · 🌙 18:07
03:21 3:21 AM
Central European Summer Time · UTC+2
☀️ 08:13 · 🌙 19:02
·
+1 h
Boulogne-Billancourt is 1 h ahead of London.
When you, London and Boulogne-Billancourt are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇧 London
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇫🇷 Boulogne-Billancourt
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇧 London | 🇫🇷 Boulogne-Billancourt |
|---|---|---|
| Local time | 02:21 | 03:21 |
| Local date | Friday, October 16, 2026 | Friday, October 16, 2026 |
| Time zone | British Summer Time | Central European Summer Time |
| UTC offset | UTC+1 | UTC+2 |
| Offset from London | — | +1 h |
| IANA zone | Europe/London | Europe/Paris |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:26 | 08:13 |
| Sunset | 18:07 | 19:02 |
| Daylight | 10 h 41 min | 10 h 49 min |
| People on this clock | 8,908,083 | 119,808 |
Compare London with another city
More comparisons with London: the time zones next to it and the far side of the clock.
Big time differences
London and Boulogne-Billancourt: common questions
How many hours ahead of London is Boulogne-Billancourt?
The clocks in Boulogne-Billancourt are 1 hour ahead of those in London (UTC+2 and UTC+1).
What time is it in Boulogne-Billancourt when it is 9:00 AM in London?
When it is 9:00 AM in London, it is 10:00 AM in Boulogne-Billancourt.
What time is it in Boulogne-Billancourt at the end of the working day in London?
The working day in London ends at 6:00 PM; in Boulogne-Billancourt it is 7:00 PM at that moment.
Is there a time when both London and Boulogne-Billancourt are at work?
Yes: from 9:00 AM to 5:00 PM in London (10:00 AM to 6:00 PM in Boulogne-Billancourt), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Boulogne-Billancourt?
From 11:00 PM in London it is already the next day in Boulogne-Billancourt. The other way round, until 1:00 AM in Boulogne-Billancourt it is still the previous day in London.
Is the time difference between London and Boulogne-Billancourt the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 1 hour.
