Saint-Denis to London: time difference
London is 4 h behind Saint-Denis. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Saint-Denis 14:19 2:19 PM London 10:19 10:19 AM You –:–
14:19 2:19 PM
Réunion Time · UTC+4
☀️ 05:34 · 🌙 18:31
10:19 10:19 AM
Greenwich Mean Time · UTC+0
☀️ 07:03 · 🌙 16:27
·
−4 h
London is 4 h behind Saint-Denis.
When you, Saint-Denis 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
🇷🇪 Saint-Denis
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
20 8 PM 21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇷🇪 Saint-Denis | 🇬🇧 London |
|---|---|---|
| Local time | 14:19 | 10:19 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Réunion Time | Greenwich Mean Time |
| UTC offset | UTC+4 | UTC+0 |
| Offset from Saint-Denis | — | −4 h |
| IANA zone | Indian/Reunion | Europe/London |
| Daylight saving | Not observed | On standard time → UTC+1, Mar 28, 02:00 |
| Sunrise | 05:34 | 07:03 |
| Sunset | 18:31 | 16:27 |
| Daylight | 12 h 57 min | 9 h 24 min |
| People on this clock | 154,765 | 8,908,083 |
Compare Saint-Denis with another city
More comparisons with Saint-Denis: the time zones next to it and the far side of the clock.
Big time differences
Saint-Denis and London: common questions
How many hours behind Saint-Denis is London?
The clocks in London are 4 hours behind those in Saint-Denis (UTC+0 and UTC+4).
If it is 9:00 AM in Saint-Denis, what time is it in London?
At 9:00 AM in Saint-Denis, clocks in London show 5:00 AM.
What time is it in London at the end of the working day in Saint-Denis?
The working day in Saint-Denis ends at 6:00 PM; in London it is 2:00 PM at that moment.
Is there a time when both Saint-Denis and London are at work?
Yes: from 1:00 PM to 6:00 PM in Saint-Denis (9:00 AM to 2:00 PM in London), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Saint-Denis is it still yesterday in London?
Before 4:00 AM in Saint-Denis, the date in London has not changed yet. From 8:00 PM in London, it is already the next day in Saint-Denis.
Is the time difference between Saint-Denis and London the same all year?
No. Only London switches to summer time, so the gap changes twice a year. From March 28, 2027, London will be 3 hours behind Saint-Denis.
