Sesimbra to Buenos Aires: time difference
Buenos Aires is 4 h behind Sesimbra. 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.
Sesimbra 05:01 5:01 AM Buenos Aires 01:01 1:01 AM You –:–
05:01 5:01 AM
Western European Summer Time · UTC+1
☀️ 07:50 · 🌙 18:54
01:01 1:01 AM
Argentina Standard Time · UTC-3
☀️ 06:07 · 🌙 19:11
·
−4 h
Buenos Aires is 4 h behind Sesimbra.
When you, Sesimbra 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
🇵🇹 Sesimbra
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 | 🇵🇹 Sesimbra | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 05:01 | 01:01 |
| 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 Sesimbra | — | −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 5 min | 13 h 4 min |
| People on this clock | 52,394 | 2,891,082 |
Compare Sesimbra with another city
More comparisons with Sesimbra: the time zones next to it and the far side of the clock.
Big time differences
Sesimbra and Buenos Aires: common questions
What is the time difference between Sesimbra and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Sesimbra is on UTC+1.
What time is it in Buenos Aires at the start of the working day in Sesimbra?
The working day in Sesimbra starts at 9:00 AM; in Buenos Aires it is 5:00 AM at that moment.
What time is it in Buenos Aires at the end of the working day in Sesimbra?
The working day in Sesimbra ends at 6:00 PM; in Buenos Aires it is 2:00 PM at that moment.
When is a good time to call Buenos Aires from Sesimbra?
Between 1:00 PM and 6:00 PM in Sesimbra – that is 9:00 AM to 2:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Sesimbra is it still yesterday in Buenos Aires?
Before 4:00 AM in Sesimbra, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Sesimbra.
Does the time gap between Sesimbra and Buenos Aires change during the year?
Yes – daylight saving time is used in Sesimbra but not in Buenos Aires. From October 25, 2026, Buenos Aires will be 3 hours behind Sesimbra.
