Buenos Aires to Porto: time difference
Porto is 4 h ahead of Buenos Aires. 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.
Buenos Aires 00:43 12:43 AM Porto 04:43 4:43 AM You –:–
00:43 12:43 AM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
04:43 4:43 AM
Western European Summer Time · UTC+1
☀️ 07:41 · 🌙 19:03
·
+4 h
Porto is 4 h ahead of Buenos Aires.
When you, Buenos Aires and Porto are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇦🇷 Buenos Aires
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
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 0 12 AM 1 1 AM 2 2 AM 3 3 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇵🇹 Porto |
|---|---|---|
| Local time | 00:43 | 04:43 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Argentina Standard Time | Western European Summer Time |
| UTC offset | UTC-3 | UTC+1 |
| Offset from Buenos Aires | — | +4 h |
| IANA zone | America/Argentina/Buenos Aires | Europe/Lisbon |
| Daylight saving | Not observed | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 06:20 | 07:41 |
| Sunset | 19:03 | 19:03 |
| Daylight | 12 h 43 min | 11 h 23 min |
| People on this clock | 2,891,082 | 231,828 |
Compare Buenos Aires with another city
More comparisons with Buenos Aires: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Buenos Aires and Porto: common questions
How far ahead of Buenos Aires is Porto?
Porto is 4 hours ahead of Buenos Aires: UTC+1 against UTC−3.
If it is 9:00 AM in Buenos Aires, what time is it in Porto?
At 9:00 AM in Buenos Aires, clocks in Porto show 1:00 PM.
If it is 6:00 PM in Buenos Aires, what time is it in Porto?
At 6:00 PM in Buenos Aires, clocks in Porto show 10:00 PM.
When is a good time to call Porto from Buenos Aires?
Between 9:00 AM and 2:00 PM in Buenos Aires – that is 1:00 PM to 6:00 PM in Porto – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Porto?
From 8:00 PM in Buenos Aires it is already the next day in Porto. The other way round, until 4:00 AM in Porto it is still the previous day in Buenos Aires.
Does the time difference between Buenos Aires and Porto change?
Yes. The clocks change only in Porto. From October 25, 2026, Porto will be 3 hours ahead of Buenos Aires.
