Buenos Aires to Lousã: time difference
Lousã 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 19:17 7:17 PM Lousã 23:17 11:17 PM You –:–
19:17 7:17 PM
Argentina Standard Time · UTC-3
☀️ 06:06 · 🌙 19:12
23:17 11:17 PM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:48
·
+4 h
Lousã is 4 h ahead of Buenos Aires.
When you, Buenos Aires and Lousã 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
🇵🇹 Lousã
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 | 🇵🇹 Lousã |
|---|---|---|
| Local time | 19:17 | 23:17 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 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 | 06:06 | 07:49 |
| Sunset | 19:12 | 18:48 |
| Daylight | 13 h 6 min | 10 h 59 min |
| People on this clock | 2,891,082 | 17,007 |
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 Lousã: common questions
What is the time difference between Buenos Aires and Lousã?
Lousã is 4 hours ahead: it uses UTC+1, while Buenos Aires is on UTC−3.
If it is 9:00 AM in Buenos Aires, what time is it in Lousã?
At 9:00 AM in Buenos Aires, clocks in Lousã show 1:00 PM.
What time is it in Lousã when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 10:00 PM in Lousã.
Is there a time when both Buenos Aires and Lousã are at work?
Yes: from 9:00 AM to 2:00 PM in Buenos Aires (1:00 PM to 6:00 PM in Lousã), the working days (9:00 AM–6:00 PM) overlap.
From what time in Buenos Aires is it tomorrow in Lousã?
Once it is 8:00 PM in Buenos Aires, the date in Lousã has already changed. Until 4:00 AM in Lousã, it is still the previous day in Buenos Aires.
Does the time gap between Buenos Aires and Lousã change during the year?
Yes – daylight saving time is used in Lousã but not in Buenos Aires. From October 25, 2026, Lousã will be 3 hours ahead of Buenos Aires.
