Cergy to London: time difference
London is 1 h behind Cergy. Live clocks for both, the working hours they share, and how each one sits against your own time.
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Cergy 15:39 3:39 PM London 14:39 2:39 PM You –:–
15:39 3:39 PM
Central European Summer Time · UTC+2
☀️ 08:16 · 🌙 19:00
14:39 2:39 PM
British Summer Time · UTC+1
☀️ 07:28 · 🌙 18:05
·
−1 h
London is 1 h behind Cergy.
When you, Cergy and London are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇫🇷 Cergy
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
🇬🇧 London
23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇫🇷 Cergy | 🇬🇧 London |
|---|---|---|
| Local time | 15:39 | 14:39 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Central European Summer Time | British Summer Time |
| UTC offset | UTC+2 | UTC+1 |
| Offset from Cergy | — | −1 h |
| IANA zone | Europe/Paris | Europe/London |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 08:16 | 07:28 |
| Sunset | 19:00 | 18:05 |
| Daylight | 10 h 45 min | 10 h 37 min |
| People on this clock | 68,348 | 8,908,083 |
Compare Cergy with another city
More comparisons with Cergy: the time zones next to it and the far side of the clock.
Big time differences
Cergy and London: common questions
How far behind Cergy is London?
London is 1 hour behind Cergy: UTC+1 against UTC+2.
If it is 9:00 AM in Cergy, what time is it in London?
At 9:00 AM in Cergy, clocks in London show 8:00 AM.
If it is 6:00 PM in Cergy, what time is it in London?
At 6:00 PM in Cergy, clocks in London show 5:00 PM.
Is there a time when both Cergy and London are at work?
Yes: from 10:00 AM to 6:00 PM in Cergy (9:00 AM to 5:00 PM in London), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Cergy is it still yesterday in London?
Before 1:00 AM in Cergy, the date in London has not changed yet. From 11:00 PM in London, it is already the next day in Cergy.
Does the time gap between Cergy and London change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 1 hour.
