Buenos Aires to Alton, IL: time difference
Alton, IL is 2 h behind 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 17:01 5:01 PM Alton, IL 15:01 3:01 PM You –:–
17:01 5:01 PM
Argentina Standard Time · UTC-3
☀️ 06:06 · 🌙 19:12
15:01 3:01 PM
Central Daylight Time · UTC-5
☀️ 07:16 · 🌙 18:17
·
−2 h
Alton, IL is 2 h behind Buenos Aires.
When you, Buenos Aires and Alton, IL 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
🇺🇸 Alton, IL
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 20 8 PM 21 9 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇺🇸 Alton, IL |
|---|---|---|
| Local time | 17:01 | 15:01 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Argentina Standard Time | Central Daylight Time |
| UTC offset | UTC-3 | UTC-5 |
| Offset from Buenos Aires | — | −2 h |
| IANA zone | America/Argentina/Buenos Aires | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 06:06 | 07:16 |
| Sunset | 19:12 | 18:17 |
| Daylight | 13 h 6 min | 11 h 1 min |
| People on this clock | 2,891,082 | 25,676 |
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 Alton, IL: common questions
How many hours behind Buenos Aires is Alton, IL?
The clocks in Alton are 2 hours behind those in Buenos Aires (UTC−5 and UTC−3).
What time is it in Alton, IL, when it is 9:00 AM in Buenos Aires?
When it is 9:00 AM in Buenos Aires, it is 7:00 AM in Alton.
What time is it in Alton, IL, at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Alton it is 4:00 PM at that moment.
When do working hours in Buenos Aires and in Alton, IL, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 11:00 AM to 6:00 PM in Buenos Aires, which is 9:00 AM to 4:00 PM in Alton.
Until what time in Buenos Aires is it still yesterday in Alton, IL?
Before 2:00 AM in Buenos Aires, the date in Alton has not changed yet. From 10:00 PM in Alton, it is already the next day in Buenos Aires.
Does the time gap between Buenos Aires and Alton, IL, change during the year?
Yes – daylight saving time is used in Alton but not in Buenos Aires. From November 1, 2026, Alton will be 3 hours behind Buenos Aires.
