London to Castro: time difference
Castro is 3 h behind London. 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.
London 00:52 12:52 AM Castro 21:52 9:52 PM You –:–
00:52 12:52 AM
Greenwich Mean Time · UTC+0
☀️ 07:03 · 🌙 16:27
21:52 9:52 PM
Chile Summer Time · UTC-3
☀️ 06:35 · 🌙 20:44
·
−3 h
Castro is 3 h behind London.
When you, London and Castro 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
🇨🇱 Castro
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 20 8 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇧 London | 🇨🇱 Castro |
|---|---|---|
| Local time | 00:52 | 21:52 |
| Local date | Friday, November 6, 2026 | Thursday, November 5, 2026 |
| Time zone | Greenwich Mean Time | Chile Summer Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from London | — | −3 h |
| IANA zone | Europe/London | America/Santiago |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | On summer time → UTC-4, Apr 3, 23:00 |
| Sunrise | 07:03 | 06:35 |
| Sunset | 16:27 | 20:44 |
| Daylight | 9 h 24 min | 14 h 9 min |
| People on this clock | 8,908,083 | 33,417 |
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 Castro: common questions
What is the time difference between London and Castro?
Castro is 3 hours behind: it uses UTC−3, while London is on UTC+0.
What time is it in Castro at the start of the working day in London?
The working day in London starts at 9:00 AM; in Castro it is 6:00 AM at that moment.
If it is 6:00 PM in London, what time is it in Castro?
At 6:00 PM in London, clocks in Castro show 3:00 PM.
When do working hours in London and in Castro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in London, which is 9:00 AM to 3:00 PM in Castro.
Until what time in London is it still yesterday in Castro?
Before 3:00 AM in London, the date in Castro has not changed yet. From 9:00 PM in Castro, it is already the next day in London.
Is the time difference between London and Castro the same all year?
No. Both places use summer time, but they switch on different dates, so for a while the gap changes. From March 28, 2027, Castro will be 4 hours behind London.
