Kalutara to London: time difference
London is 4 h 30 min behind Kalutara. 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.
Kalutara 03:39 3:39 AM London 23:09 11:09 PM You –:–
03:39 3:39 AM
India Standard Time · UTC+5:30
☀️ 05:57 · 🌙 17:55
23:09 11:09 PM
British Summer Time · UTC+1
☀️ 07:28 · 🌙 18:05
·
−4 h 30 min
London is 4 h 30 min behind Kalutara.
When you, Kalutara 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
🇱🇰 Kalutara
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
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇱🇰 Kalutara | 🇬🇧 London |
|---|---|---|
| Local time | 03:39 | 23:09 |
| Local date | Sunday, October 18, 2026 | Saturday, October 17, 2026 |
| Time zone | India Standard Time | British Summer Time |
| UTC offset | UTC+5:30 | UTC+1 |
| Offset from Kalutara | — | −4 h 30 min |
| IANA zone | Asia/Colombo | Europe/London |
| Daylight saving | Not observed | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 05:57 | 07:28 |
| Sunset | 17:55 | 18:05 |
| Daylight | 11 h 58 min | 10 h 37 min |
| People on this clock | 39,600 | 8,908,083 |
Compare Kalutara with another city
More comparisons with Kalutara: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Kalutara and London: common questions
How many hours behind Kalutara is London?
The clocks in London are 4 hours and 30 minutes behind those in Kalutara (UTC+1 and UTC+5:30).
What time is it in London at the start of the working day in Kalutara?
The working day in Kalutara starts at 9:00 AM; in London it is 4:30 AM at that moment.
What time is it in London at the end of the working day in Kalutara?
The working day in Kalutara ends at 6:00 PM; in London it is 1:30 PM at that moment.
When is a good time to call London from Kalutara?
Between 1:30 PM and 6:00 PM in Kalutara – that is 9:00 AM to 1:30 PM in London – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in London?
Until 4:30 AM in Kalutara it is still the previous day in London. The other way round, from 7:30 PM in London it is already the next day in Kalutara.
Is the time difference between Kalutara and London the same all year?
No. Only London switches to summer time, so the gap changes twice a year. From October 25, 2026, London will be 5 hours and 30 minutes behind Kalutara.
