Buenos Aires to Coimbra: time difference
Coimbra 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 06:06 6:06 AM Coimbra 10:06 10:06 AM You –:–
06:06 6:06 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
10:06 10:06 AM
Western European Summer Time · UTC+1
☀️ 07:39 · 🌙 19:03
·
+4 h
Coimbra is 4 h ahead of Buenos Aires.
When you, Buenos Aires and Coimbra 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
🇵🇹 Coimbra
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 | 🇵🇹 Coimbra |
|---|---|---|
| Local time | 06:06 | 10:06 |
| 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 | 06:19 | 07:39 |
| Sunset | 19:04 | 19:03 |
| Daylight | 12 h 45 min | 11 h 24 min |
| People on this clock | 2,891,082 | 140,838 |
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 Coimbra: common questions
How many hours ahead of Buenos Aires is Coimbra?
The clocks in Coimbra are 4 hours ahead of those in Buenos Aires (UTC+1 and UTC−3).
What time is it in Coimbra when it is 9:00 AM in Buenos Aires?
When it is 9:00 AM in Buenos Aires, it is 1:00 PM in Coimbra.
What time is it in Coimbra at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Coimbra it is 10:00 PM at that moment.
When is a good time to call Coimbra from Buenos Aires?
Between 9:00 AM and 2:00 PM in Buenos Aires – that is 1:00 PM to 6:00 PM in Coimbra – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Coimbra?
From 8:00 PM in Buenos Aires it is already the next day in Coimbra. The other way round, until 4:00 AM in Coimbra it is still the previous day in Buenos Aires.
Does the time difference between Buenos Aires and Coimbra change?
Yes. The clocks change only in Coimbra. From October 25, 2026, Coimbra will be 3 hours ahead of Buenos Aires.
