Athens to Porto Alegre: time difference
Porto Alegre is 3 h behind Athens. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇸🇹 Porto Alegre, Sao Tome and Principe
26
- Greenwich Mean Time
- UTC+0
- Daytime
☀️ 05:18 · 🌙 17:25 · 12 h 7 min
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Athens 13:43 1:43 PM Porto Alegre 10:43 10:43 AM You –:–
13:43 1:43 PM
Eastern European Summer Time · UTC+3
☀️ 07:29 · 🌙 18:56
10:43 10:43 AM
Greenwich Mean Time · UTC+0
☀️ 05:18 · 🌙 17:25
·
−3 h
Porto Alegre is 3 h behind Athens.
When you, Athens 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
🇬🇷 Athens
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 | 🇬🇷 Athens | 🇸🇹 Porto Alegre |
|---|---|---|
| Local time | 13:43 | 10:43 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern European Summer Time | Greenwich Mean Time |
| UTC offset | UTC+3 | UTC+0 |
| Offset from Athens | — | −3 h |
| IANA zone | Europe/Athens | Africa/Sao Tome |
| Daylight saving | On summer time → UTC+2, Oct 25, 03:00 | Not observed |
| Sunrise | 07:29 | 05:18 |
| Sunset | 18:56 | 17:25 |
| Daylight | 11 h 27 min | 12 h 7 min |
| People on this clock | 3,090,508 | 795 |
Compare Athens with another city
More comparisons with Athens: the time zones next to it and the far side of the clock.
Big time differences
Athens and Porto Alegre: common questions
What is the time difference between Athens and Porto Alegre?
Porto Alegre is 3 hours behind: it uses UTC+0, while Athens is on UTC+3.
If it is 9:00 AM in Athens, what time is it in Porto Alegre?
At 9:00 AM in Athens, clocks in Porto Alegre show 6:00 AM.
If it is 6:00 PM in Athens, what time is it in Porto Alegre?
At 6:00 PM in Athens, clocks in Porto Alegre show 3:00 PM.
When is a good time to call Porto Alegre from Athens?
Between 12:00 PM and 6:00 PM in Athens – that is 9:00 AM to 3:00 PM in Porto Alegre – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Porto Alegre compared with Athens?
The new day starts in Porto Alegre later: until 3:00 AM in Athens, it is still the previous day there. From 9:00 PM in Porto Alegre, Athens is already on the next day.
Does the time gap between Athens and Porto Alegre change during the year?
Yes – daylight saving time is used in Athens but not in Porto Alegre. From October 25, 2026, Porto Alegre will be 2 hours behind Athens.
