Lousã to Buenos Aires: time difference
Buenos Aires is 4 h behind Lousã. 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.
Lousã 21:18 9:18 PM Buenos Aires 17:18 5:18 PM You –:–
21:18 9:18 PM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:48
17:18 5:18 PM
Argentina Standard Time · UTC-3
☀️ 06:06 · 🌙 19:12
·
−4 h
Buenos Aires is 4 h behind Lousã.
When you, Lousã 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
🇵🇹 Lousã
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 | 🇵🇹 Lousã | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 21:18 | 17:18 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Western European Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Lousã | — | −4 h |
| IANA zone | Europe/Lisbon | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:49 | 06:06 |
| Sunset | 18:48 | 19:12 |
| Daylight | 10 h 59 min | 13 h 6 min |
| People on this clock | 17,007 | 2,891,082 |
Compare Lousã with another city
More comparisons with Lousã: the time zones next to it and the far side of the clock.
Big time differences
Lousã and Buenos Aires: common questions
What is the time difference between Lousã and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Lousã is on UTC+1.
What time is it in Buenos Aires when it is 9:00 AM in Lousã?
When it is 9:00 AM in Lousã, it is 5:00 AM in Buenos Aires.
What time is it in Buenos Aires at the end of the working day in Lousã?
The working day in Lousã ends at 6:00 PM; in Buenos Aires it is 2:00 PM at that moment.
Is there a time when both Lousã and Buenos Aires are at work?
Yes: from 1:00 PM to 6:00 PM in Lousã (9:00 AM to 2:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Lousã is it still yesterday in Buenos Aires?
Before 4:00 AM in Lousã, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Lousã.
Is the time difference between Lousã and Buenos Aires the same all year?
No. Only Lousã switches to summer time, so the gap changes twice a year. From October 25, 2026, Buenos Aires will be 3 hours behind Lousã.
