London to Porto Alegre: time difference
Porto Alegre 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 21:50 9:50 PM Porto Alegre 18:50 6:50 PM You –:–
21:50 9:50 PM
Greenwich Mean Time · UTC+0
☀️ 07:03 · 🌙 16:27
18:50 6:50 PM
Brasilia Standard Time · UTC-3
☀️ 05:27 · 🌙 18:52
·
−3 h
Porto Alegre is 3 h behind London.
When you, London and Porto Alegre 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
🇧🇷 Porto Alegre
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 | 🇧🇷 Porto Alegre |
|---|---|---|
| Local time | 21:50 | 18:50 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 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 | 05:27 |
| Sunset | 16:27 | 18:52 |
| Daylight | 9 h 24 min | 13 h 24 min |
| People on this clock | 8,908,083 | 1,332,833 |
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 Porto Alegre: common questions
How far behind London is Porto Alegre?
Porto Alegre is 3 hours behind London: UTC−3 against UTC+0.
What time is it in Porto Alegre when it is 9:00 AM in London?
When it is 9:00 AM in London, it is 6:00 AM in Porto Alegre.
If it is 6:00 PM in London, what time is it in Porto Alegre?
At 6:00 PM in London, clocks in Porto Alegre show 3:00 PM.
When do working hours in London and in Porto Alegre 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 Porto Alegre.
Until what time in London is it still yesterday in Porto Alegre?
Before 3:00 AM in London, the date in Porto Alegre has not changed yet. From 9:00 PM in Porto Alegre, it is already the next day in London.
Is the time difference between London and Porto Alegre the same all year?
No. Only London switches to summer time, so the gap changes twice a year. From March 28, 2027, Porto Alegre will be 4 hours behind London.
