Sines to Buenos Aires: time difference
Buenos Aires is 4 h behind Sines. 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.
Sines 02:11 2:11 AM Buenos Aires 22:11 10:11 PM You –:–
02:11 2:11 AM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:53
22:11 10:11 PM
Argentina Standard Time · UTC-3
☀️ 06:07 · 🌙 19:11
·
−4 h
Buenos Aires is 4 h behind Sines.
When you, Sines 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
🇵🇹 Sines
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 | 🇵🇹 Sines | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 02:11 | 22:11 |
| Local date | Tuesday, October 20, 2026 | Monday, October 19, 2026 |
| Time zone | Western European Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Sines | — | −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 | 06:07 |
| Sunset | 18:53 | 19:11 |
| Daylight | 11 h 4 min | 13 h 4 min |
| People on this clock | 14,200 | 2,891,082 |
Compare Sines with another city
More comparisons with Sines: the time zones next to it and the far side of the clock.
Big time differences
Sines and Buenos Aires: common questions
What is the time difference between Sines and Buenos Aires?
Buenos Aires is 4 hours behind: it uses UTC−3, while Sines is on UTC+1.
What time is it in Buenos Aires at the start of the working day in Sines?
The working day in Sines 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 Sines?
The working day in Sines 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 Sines?
Between 1:00 PM and 6:00 PM in Sines – that is 9:00 AM to 2:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Buenos Aires?
Until 4:00 AM in Sines it is still the previous day in Buenos Aires. The other way round, from 8:00 PM in Buenos Aires it is already the next day in Sines.
Does the time difference between Sines and Buenos Aires change?
Yes. The clocks change only in Sines. From October 25, 2026, Buenos Aires will be 3 hours behind Sines.
