Massy to London: time difference
London is 1 h behind Massy. 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.
Massy 12:46 12:46 PM London 11:46 11:46 AM You –:–
12:46 12:46 PM
Central European Summer Time · UTC+2
☀️ 08:19 · 🌙 18:54
11:46 11:46 AM
British Summer Time · UTC+1
☀️ 07:33 · 🌙 17:59
·
−1 h
London is 1 h behind Massy.
When you, Massy 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
🇫🇷 Massy
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 | 🇫🇷 Massy | 🇬🇧 London |
|---|---|---|
| Local time | 12:46 | 11:46 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central European Summer Time | British Summer Time |
| UTC offset | UTC+2 | UTC+1 |
| Offset from Massy | — | −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 | 08:19 | 07:33 |
| Sunset | 18:54 | 17:59 |
| Daylight | 10 h 35 min | 10 h 26 min |
| People on this clock | 50,000 | 8,908,083 |
Compare Massy with another city
More comparisons with Massy: the time zones next to it and the far side of the clock.
Big time differences
Massy and London: common questions
What is the time difference between Massy and London?
London is 1 hour behind: it uses UTC+1, while Massy is on UTC+2.
What time is it in London when it is 9:00 AM in Massy?
When it is 9:00 AM in Massy, it is 8:00 AM in London.
What time is it in London when it is 6:00 PM in Massy?
When it is 6:00 PM in Massy, it is 5:00 PM in London.
Is there a time when both Massy and London are at work?
Yes: from 10:00 AM to 6:00 PM in Massy (9:00 AM to 5:00 PM in London), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Massy is it still yesterday in London?
Before 1:00 AM in Massy, the date in London has not changed yet. From 11:00 PM in London, it is already the next day in Massy.
Is the time difference between Massy and London the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 1 hour.
