Buenos Aires to Siena: time difference
Siena is 5 h ahead of Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 15:48 3:48 PM Siena 20:48 8:48 PM You –:–
15:48 3:48 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
20:48 8:48 PM
Central European Summer Time · UTC+2
☀️ 07:31 · 🌙 18:30
·
+5 h
Siena is 5 h ahead of Buenos Aires.
When you, Buenos Aires and Siena 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
🇮🇹 Siena
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 4 4 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇮🇹 Siena |
|---|---|---|
| Local time | 15:48 | 20:48 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Argentina Standard Time | Central European Summer Time |
| UTC offset | UTC-3 | UTC+2 |
| Offset from Buenos Aires | — | +5 h |
| IANA zone | America/Argentina/Buenos Aires | Europe/Rome |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 06:10 | 07:31 |
| Sunset | 19:10 | 18:30 |
| Daylight | 13 h | 10 h 59 min |
| People on this clock | 2,891,082 | 53,903 |
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 Siena: common questions
How many hours ahead of Buenos Aires is Siena?
The clocks in Siena are 5 hours ahead of those in Buenos Aires (UTC+2 and UTC−3).
What time is it in Siena at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in Siena it is 2:00 PM at that moment.
What time is it in Siena when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 11:00 PM in Siena.
When is a good time to call Siena from Buenos Aires?
Between 9:00 AM and 1:00 PM in Buenos Aires – that is 2:00 PM to 6:00 PM in Siena – both places are within working hours (9:00 AM–6:00 PM).
From what time in Buenos Aires is it tomorrow in Siena?
Once it is 7:00 PM in Buenos Aires, the date in Siena has already changed. Until 5:00 AM in Siena, it is still the previous day in Buenos Aires.
Does the time gap between Buenos Aires and Siena change during the year?
Yes – daylight saving time is used in Siena but not in Buenos Aires. From October 25, 2026, Siena will be 4 hours ahead of Buenos Aires.
