Coimbra to Buenos Aires: time difference
Buenos Aires is 4 h behind Coimbra. 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.
Coimbra 03:29 3:29 AM Buenos Aires 23:29 11:29 PM You –:–
03:29 3:29 AM
Western European Summer Time · UTC+1
☀️ 07:39 · 🌙 19:03
23:29 11:29 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−4 h
Buenos Aires is 4 h behind Coimbra.
When you, Coimbra 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
🇵🇹 Coimbra
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 | 🇵🇹 Coimbra | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 03:29 | 23:29 |
| 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 Coimbra | — | −4 h |
| IANA zone | Europe/Lisbon | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:39 | 06:20 |
| Sunset | 19:03 | 19:03 |
| Daylight | 11 h 24 min | 12 h 43 min |
| People on this clock | 140,838 | 2,891,082 |
Compare Coimbra with another city
More comparisons with Coimbra: the time zones next to it and the far side of the clock.
Big time differences
Coimbra and Buenos Aires: common questions
What is the time difference between Coimbra and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Coimbra is on UTC+1.
If it is 9:00 AM in Coimbra, what time is it in Buenos Aires?
At 9:00 AM in Coimbra, clocks in Buenos Aires show 5:00 AM.
If it is 6:00 PM in Coimbra, what time is it in Buenos Aires?
At 6:00 PM in Coimbra, clocks in Buenos Aires show 2:00 PM.
When do working hours in Coimbra and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 1:00 PM to 6:00 PM in Coimbra, which is 9:00 AM to 2:00 PM in Buenos Aires.
When does the date change in Buenos Aires compared with Coimbra?
The new day starts in Buenos Aires later: until 4:00 AM in Coimbra, it is still the previous day there. From 8:00 PM in Buenos Aires, Coimbra is already on the next day.
Does the time difference between Coimbra and Buenos Aires change?
Yes. The clocks change only in Coimbra. From October 25, 2026, Buenos Aires will be 3 hours behind Coimbra.
