Barreiro to Buenos Aires: time difference
Buenos Aires is 4 h behind Barreiro. 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.
Barreiro 14:18 2:18 PM Buenos Aires 10:18 10:18 AM You –:–
14:18 2:18 PM
Western European Summer Time · UTC+1
☀️ 07:50 · 🌙 18:54
10:18 10:18 AM
Argentina Standard Time · UTC-3
☀️ 06:07 · 🌙 19:11
·
−4 h
Buenos Aires is 4 h behind Barreiro.
When you, Barreiro 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
🇵🇹 Barreiro
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 | 🇵🇹 Barreiro | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 14:18 | 10:18 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Western European Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Barreiro | — | −4 h |
| IANA zone | Europe/Lisbon | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:50 | 06:07 |
| Sunset | 18:54 | 19:11 |
| Daylight | 11 h 4 min | 13 h 4 min |
| People on this clock | 78,359 | 2,891,082 |
Compare Barreiro with another city
More comparisons with Barreiro: the time zones next to it and the far side of the clock.
Big time differences
Barreiro and Buenos Aires: common questions
What is the time difference between Barreiro and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Barreiro is on UTC+1.
What time is it in Buenos Aires at the start of the working day in Barreiro?
The working day in Barreiro 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 Barreiro?
When it is 6:00 PM in Barreiro, it is 2:00 PM in Buenos Aires.
When do working hours in Barreiro and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 1:00 PM to 6:00 PM in Barreiro, which is 9:00 AM to 2:00 PM in Buenos Aires.
Until what time in Barreiro is it still yesterday in Buenos Aires?
Before 4:00 AM in Barreiro, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Barreiro.
Is the time difference between Barreiro and Buenos Aires the same all year?
No. Only Barreiro switches to summer time, so the gap changes twice a year. From October 25, 2026, Buenos Aires will be 3 hours behind Barreiro.
