Portugal to Buenos Aires: time difference
Buenos Aires is 4 h behind Portugal. 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.
Portugal 07:36 7:36 AM Buenos Aires 03:36 3:36 AM You –:–
07:36 7:36 AM
Western European Summer Time · UTC+1
☀️ 07:41 · 🌙 19:07
03:36 3:36 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
·
−4 h
Buenos Aires is 4 h behind Portugal.
When you, Portugal 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
🇵🇹 Portugal
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 | 🇵🇹 Portugal | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 07:36 | 03:36 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Western European Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Portugal | — | −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 | 06:19 |
| Sunset | 19:07 | 19:04 |
| Daylight | 11 h 26 min | 12 h 45 min |
| People on this clock | 10,347,892 | 2,891,082 |
Compare Portugal with another city
More comparisons with Portugal: the time zones next to it and the far side of the clock.
Big time differences
Portugal and Buenos Aires: common questions
What is the time difference between Portugal and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Portugal is on UTC+1.
What time is it in Buenos Aires at the start of the working day in Portugal?
The working day in Portugal 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 Portugal?
When it is 6:00 PM in Portugal, it is 2:00 PM in Buenos Aires.
When is a good time to call Buenos Aires from Portugal?
Between 1:00 PM and 6:00 PM in Portugal – 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 Portugal is it still yesterday in Buenos Aires?
Before 4:00 AM in Portugal, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Portugal.
Does the time difference between Portugal and Buenos Aires change?
Yes. The clocks change only in Portugal. From October 25, 2026, Buenos Aires will be 3 hours behind Portugal.
