London to Chennai (Madras): time difference
Chennai (Madras) is 4 h 30 min ahead of London. Live clocks for both, the working hours they share, and how each one sits against your own time.
+4 h 30 min
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
London 11:16 11:16 AM Chennai (Madras) 15:46 3:46 PM You –:–
11:16 11:16 AM
British Summer Time · UTC+1
☀️ 07:16 · 🌙 18:20
15:46 3:46 PM
India Standard Time · UTC+5:30
☀️ 05:59 · 🌙 17:54
·
+4 h 30 min
Chennai (Madras) is 4 h 30 min ahead of London.
When you, London and Chennai (Madras) 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
🇮🇳 Chennai (Madras)
4:30 4:30 AM 5:30 5:30 AM 6:30 6:30 AM 7:30 7:30 AM 8:30 8:30 AM 9:30 9:30 AM 10:30 10:30 AM 11:30 11:30 AM 12:30 12:30 PM 13:30 1:30 PM 14:30 2:30 PM 15:30 3:30 PM 16:30 4:30 PM 17:30 5:30 PM 18:30 6:30 PM 19:30 7:30 PM 20:30 8:30 PM 21:30 9:30 PM 22:30 10:30 PM 23:30 11:30 PM 0:30 12:30 AM 1:30 1:30 AM 2:30 2:30 AM 3:30 3:30 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇧 London | 🇮🇳 Chennai (Madras) |
|---|---|---|
| Local time | 11:16 | 15:46 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | British Summer Time | India Standard Time |
| UTC offset | UTC+1 | UTC+5:30 |
| Offset from London | — | +4 h 30 min |
| IANA zone | Europe/London | Asia/Kolkata |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:16 | 05:59 |
| Sunset | 18:20 | 17:54 |
| Daylight | 11 h 4 min | 11 h 55 min |
| People on this clock | 8,908,083 | 4,681,087 |
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 Chennai (Madras): common questions
How many hours ahead of London is Chennai (Madras)?
The clocks in Chennai are 4 hours and 30 minutes ahead of those in London (UTC+5:30 and UTC+1).
What time is it in Chennai (Madras) at the start of the working day in London?
The working day in London starts at 9:00 AM; in Chennai it is 1:30 PM at that moment.
What time is it in Chennai (Madras) when it is 6:00 PM in London?
When it is 6:00 PM in London, it is 10:30 PM in Chennai.
Is there a time when both London and Chennai (Madras) are at work?
Yes: from 9:00 AM to 1:30 PM in London (1:30 PM to 6:00 PM in Chennai), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Chennai (Madras) compared with London?
The new day starts in Chennai earlier: at 7:30 PM in London it is already midnight there. Until 4:30 AM in Chennai, London is still on the previous day.
Does the time difference between London and Chennai (Madras) change?
Yes. The clocks change only in London. From October 25, 2026, Chennai will be 5 hours and 30 minutes ahead of London.
