London to Constantine: time difference
Constantine is 1 h ahead of London. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇩🇿 Constantine, Algeria
45
- Central European Standard Time
- UTC+1
- Night
☀️ 07:01 · 🌙 17:35 · 10 h 34 min
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
London 20:37 8:37 PM Constantine 21:37 9:37 PM You –:–
20:37 8:37 PM
Greenwich Mean Time · UTC+0
☀️ 07:01 · 🌙 16:28
21:37 9:37 PM
Central European Standard Time · UTC+1
☀️ 07:01 · 🌙 17:35
·
+1 h
Constantine is 1 h ahead of London.
When you, London and Constantine 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
🇩🇿 Constantine
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 | 🇩🇿 Constantine |
|---|---|---|
| Local time | 20:37 | 21:37 |
| Local date | Thursday, November 5, 2026 | Thursday, November 5, 2026 |
| Time zone | Greenwich Mean Time | Central European Standard Time |
| UTC offset | UTC+0 | UTC+1 |
| Offset from London | — | +1 h |
| IANA zone | Europe/London | Africa/Algiers |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:01 | 07:01 |
| Sunset | 16:28 | 17:35 |
| Daylight | 9 h 27 min | 10 h 34 min |
| People on this clock | 8,908,083 | 448,374 |
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 Constantine: common questions
What is the time difference between London and Constantine?
Constantine is 1 hour ahead: it uses UTC+1, while London is on UTC+0.
What time is it in Constantine at the start of the working day in London?
The working day in London starts at 9:00 AM; in Constantine it is 10:00 AM at that moment.
What time is it in Constantine when it is 6:00 PM in London?
When it is 6:00 PM in London, it is 7:00 PM in Constantine.
Is there a time when both London and Constantine are at work?
Yes: from 9:00 AM to 5:00 PM in London (10:00 AM to 6:00 PM in Constantine), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Constantine?
From 11:00 PM in London it is already the next day in Constantine. The other way round, until 1:00 AM in Constantine it is still the previous day in London.
Does the time difference between London and Constantine change?
Yes. The clocks change only in London. From March 28, 2027, Constantine and London will have the same time.
