Aveiro to Buenos Aires: time difference
Buenos Aires is 4 h behind Aveiro. Live clocks for both, the working hours they share, and how each one sits against your own time.
−4 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Aveiro 01:24 1:24 AM Buenos Aires 21:24 9:24 PM You –:–
01:24 1:24 AM
Western European Summer Time · UTC+1
☀️ 07:40 · 🌙 19:06
21:24 9:24 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−4 h
Buenos Aires is 4 h behind Aveiro.
When you, Aveiro 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
🇵🇹 Aveiro
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
20 8 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Aveiro | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 01:24 | 21:24 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | Western European Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Aveiro | — | −4 h |
| IANA zone | Europe/Lisbon | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:40 | 06:20 |
| Sunset | 19:06 | 19:03 |
| Daylight | 11 h 26 min | 12 h 43 min |
| People on this clock | 80,978 | 2,891,082 |
Compare Aveiro with another city
More comparisons with Aveiro: the time zones next to it and the far side of the clock.
Big time differences
Aveiro and Buenos Aires: common questions
How many hours behind Aveiro is Buenos Aires?
The clocks in Buenos Aires are 4 hours behind those in Aveiro (UTC−3 and UTC+1).
If it is 9:00 AM in Aveiro, what time is it in Buenos Aires?
At 9:00 AM in Aveiro, clocks in Buenos Aires show 5:00 AM.
If it is 6:00 PM in Aveiro, what time is it in Buenos Aires?
At 6:00 PM in Aveiro, clocks in Buenos Aires show 2:00 PM.
When do working hours in Aveiro and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 1:00 PM to 6:00 PM in Aveiro, which is 9:00 AM to 2:00 PM in Buenos Aires.
When is it still the previous day in Buenos Aires?
Until 4:00 AM in Aveiro it is still the previous day in Buenos Aires. The other way round, from 8:00 PM in Buenos Aires it is already the next day in Aveiro.
Does the time difference between Aveiro and Buenos Aires change?
Yes. The clocks change only in Aveiro. From October 25, 2026, Buenos Aires will be 3 hours behind Aveiro.
