London to Rio das Ostras: time difference
Rio das Ostras is 3 h behind London. Live clocks for both, the working hours they share, and how each one sits against your own time.
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
London 00:10 12:10 AM Rio das Ostras 21:10 9:10 PM You –:–
00:10 12:10 AM
Greenwich Mean Time · UTC+0
☀️ 07:03 · 🌙 16:27
21:10 9:10 PM
Brasilia Standard Time · UTC-3
☀️ 05:02 · 🌙 18:03
·
−3 h
Rio das Ostras is 3 h behind London.
When you, London and Rio das Ostras 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
🇧🇷 Rio das Ostras
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 | 🇧🇷 Rio das Ostras |
|---|---|---|
| Local time | 00:10 | 21:10 |
| Local date | Friday, November 6, 2026 | Thursday, November 5, 2026 |
| Time zone | Greenwich Mean Time | Brasilia Standard Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from London | — | −3 h |
| IANA zone | Europe/London | America/Sao Paulo |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:03 | 05:02 |
| Sunset | 16:27 | 18:03 |
| Daylight | 9 h 24 min | 13 h 1 min |
| People on this clock | 8,908,083 | 156,491 |
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 Rio das Ostras: common questions
How far behind London is Rio das Ostras?
Rio das Ostras is 3 hours behind London: UTC−3 against UTC+0.
If it is 9:00 AM in London, what time is it in Rio das Ostras?
At 9:00 AM in London, clocks in Rio das Ostras show 6:00 AM.
What time is it in Rio das Ostras when it is 6:00 PM in London?
When it is 6:00 PM in London, it is 3:00 PM in Rio das Ostras.
When do working hours in London and in Rio das Ostras 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 Rio das Ostras.
Until what time in London is it still yesterday in Rio das Ostras?
Before 3:00 AM in London, the date in Rio das Ostras has not changed yet. From 9:00 PM in Rio das Ostras, it is already the next day in London.
Does the time difference between London and Rio das Ostras change?
Yes. The clocks change only in London. From March 28, 2027, Rio das Ostras will be 4 hours behind London.
