Lisbon to Buenos Aires: time difference
Buenos Aires is 4 h behind Lisbon. 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.
Lisbon 00:47 12:47 AM Buenos Aires 20:47 8:47 PM You –:–
00:47 12:47 AM
Western European Summer Time · UTC+1
☀️ 07:40 · 🌙 19:09
20:47 8:47 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−4 h
Buenos Aires is 4 h behind Lisbon.
When you, Lisbon 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
🇵🇹 Lisbon
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 | 🇵🇹 Lisbon | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 00:47 | 20:47 |
| 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 Lisbon | — | −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 | 19:09 | 19:03 |
| Daylight | 11 h 29 min | 12 h 43 min |
| People on this clock | 545,923 | 2,891,082 |
Compare Lisbon with another city
More comparisons with Lisbon: the time zones next to it and the far side of the clock.
Big time differences
Lisbon and Buenos Aires: common questions
What is the time difference between Lisbon and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Lisbon is on UTC+1.
What time is it in Buenos Aires when it is 9:00 AM in Lisbon?
When it is 9:00 AM in Lisbon, it is 5:00 AM in Buenos Aires.
What time is it in Buenos Aires at the end of the working day in Lisbon?
The working day in Lisbon ends at 6:00 PM; in Buenos Aires it is 2:00 PM at that moment.
When is a good time to call Buenos Aires from Lisbon?
Between 1:00 PM and 6:00 PM in Lisbon – that is 9:00 AM to 2:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with Lisbon?
The new day starts in Buenos Aires later: until 4:00 AM in Lisbon, it is still the previous day there. From 8:00 PM in Buenos Aires, Lisbon is already on the next day.
Is the time difference between Lisbon and Buenos Aires the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From October 25, 2026, Buenos Aires will be 3 hours behind Lisbon.
