Porto to Buenos Aires: time difference
Buenos Aires is 4 h behind Porto. 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.
Porto 02:06 2:06 AM Buenos Aires 22:06 10:06 PM You –:–
02:06 2:06 AM
Western European Summer Time · UTC+1
☀️ 07:41 · 🌙 19:03
22:06 10:06 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−4 h
Buenos Aires is 4 h behind Porto.
When you, Porto 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
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 | 🇵🇹 Porto | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 02:06 | 22:06 |
| 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 Porto | — | −4 h |
| IANA zone | Europe/Lisbon | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:41 | 06:20 |
| Sunset | 19:03 | 19:03 |
| Daylight | 11 h 23 min | 12 h 43 min |
| People on this clock | 231,828 | 2,891,082 |
Compare Porto with another city
More comparisons with Porto: the time zones next to it and the far side of the clock.
Big time differences
Porto and Buenos Aires: common questions
How many hours behind Porto is Buenos Aires?
The clocks in Buenos Aires are 4 hours behind those in Porto (UTC−3 and UTC+1).
What time is it in Buenos Aires at the start of the working day in Porto?
The working day in Porto starts at 9:00 AM; in Buenos Aires it is 5:00 AM at that moment.
What time is it in Buenos Aires when it is 6:00 PM in Porto?
When it is 6:00 PM in Porto, it is 2:00 PM in Buenos Aires.
When is a good time to call Buenos Aires from Porto?
Between 1:00 PM and 6:00 PM in Porto – that is 9:00 AM to 2:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Porto is it still yesterday in Buenos Aires?
Before 4:00 AM in Porto, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Porto.
Does the time gap between Porto and Buenos Aires change during the year?
Yes – daylight saving time is used in Porto but not in Buenos Aires. From October 25, 2026, Buenos Aires will be 3 hours behind Porto.
