🇸🇹 Porto Alegre, Sao Tome and Principe
09
- Greenwich Mean Time
- UTC+0
- Daytime
☀️ 05:18 · 🌙 17:25 · 12 h 7 min
Porto Alegre to Buenos Aires: time difference
Buenos Aires is 3 h behind Porto Alegre. 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.
Porto Alegre 07:08 7:08 AM Buenos Aires 04:08 4:08 AM You –:–
07:08 7:08 AM
Greenwich Mean Time · UTC+0
☀️ 05:18 · 🌙 17:25
04:08 4:08 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
·
−3 h
Buenos Aires is 3 h behind Porto Alegre.
When you, Porto Alegre and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇸🇹 Porto Alegre
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
🇦🇷 Buenos Aires
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 | 🇸🇹 Porto Alegre | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 07:08 | 04:08 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Greenwich Mean Time | Argentina Standard Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from Porto Alegre | — | −3 h |
| IANA zone | Africa/Sao Tome | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:18 | 06:19 |
| Sunset | 17:25 | 19:04 |
| Daylight | 12 h 7 min | 12 h 45 min |
| People on this clock | 795 | 2,891,082 |
Compare Porto Alegre with another city
More comparisons with Porto Alegre: the time zones next to it and the far side of the clock.
Big time differences
Porto Alegre and Buenos Aires: common questions
How many hours behind Porto Alegre is Buenos Aires?
The clocks in Buenos Aires are 3 hours behind those in Porto Alegre (UTC−3 and UTC+0).
What time is it in Buenos Aires when it is 9:00 AM in Porto Alegre?
When it is 9:00 AM in Porto Alegre, it is 6:00 AM in Buenos Aires.
What time is it in Buenos Aires when it is 6:00 PM in Porto Alegre?
When it is 6:00 PM in Porto Alegre, it is 3:00 PM in Buenos Aires.
When do working hours in Porto Alegre and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Porto Alegre, which is 9:00 AM to 3:00 PM in Buenos Aires.
When is it still the previous day in Buenos Aires?
Until 3:00 AM in Porto Alegre it is still the previous day in Buenos Aires. The other way round, from 9:00 PM in Buenos Aires it is already the next day in Porto Alegre.
Is the time difference between Porto Alegre and Buenos Aires the same all year?
Yes. Neither Porto Alegre nor Buenos Aires switches to summer time, so the gap is always 3 hours.
