Chicago, IL to Buenos Aires: time difference
Buenos Aires is 2 h ahead of Chicago, IL. Live clocks for both, the working hours they share, and how each one sits against your own time.
+2 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Chicago, IL 22:44 10:44 PM Buenos Aires 00:44 12:44 AM You –:–
22:44 10:44 PM
Central Daylight Time · UTC-5
☀️ 06:57 · 🌙 18:20
00:44 12:44 AM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
+2 h
Buenos Aires is 2 h ahead of Chicago, IL.
When you, Chicago, IL 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
🇺🇸 Chicago, IL
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
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 0 12 AM 1 1 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Chicago, IL | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 22:44 | 00:44 |
| Local date | Friday, October 9, 2026 | Saturday, October 10, 2026 |
| Time zone | Central Daylight Time | Argentina Standard Time |
| UTC offset | UTC-5 | UTC-3 |
| Offset from Chicago, IL | — | +2 h |
| IANA zone | America/Chicago | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 06:57 | 06:20 |
| Sunset | 18:20 | 19:03 |
| Daylight | 11 h 24 min | 12 h 43 min |
| People on this clock | 2,746,388 | 2,891,082 |
Compare Chicago, IL with another city
More comparisons with Chicago, IL: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Chicago, IL and Buenos Aires: common questions
How many hours ahead of Chicago, IL, is Buenos Aires?
The clocks in Buenos Aires are 2 hours ahead of those in Chicago (UTC−3 and UTC−5).
What time is it in Buenos Aires when it is 9:00 AM in Chicago, IL?
When it is 9:00 AM in Chicago, it is 11:00 AM in Buenos Aires.
What time is it in Buenos Aires when it is 6:00 PM in Chicago, IL?
When it is 6:00 PM in Chicago, it is 8:00 PM in Buenos Aires.
When is a good time to call Buenos Aires from Chicago, IL?
Between 9:00 AM and 4:00 PM in Chicago – that is 11:00 AM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
From what time in Chicago, IL, is it tomorrow in Buenos Aires?
Once it is 10:00 PM in Chicago, the date in Buenos Aires has already changed. Until 2:00 AM in Buenos Aires, it is still the previous day in Chicago.
Does the time gap between Chicago, IL, and Buenos Aires change during the year?
Yes – daylight saving time is used in Chicago but not in Buenos Aires. From November 1, 2026, Buenos Aires will be 3 hours ahead of Chicago.
