Time difference between Buenos Aires and Chicago
−2 hChicago is 2 hours behind Buenos Aires.
Observatory log
Buenos Aires and Chicago, compared
- 01Difference now
Chicago is 2 hours behind Buenos Aires.
Buenos Aires: UTC−3 (UTC−3) · Chicago: CDT (UTC−5)
Next changeFrom 1 November 2026: Chicago is 3 hours behind Buenos Aires.
- 02Through 2026–2027
- 1 January 2026 – 8 March 2026−3 h
- 8 March 2026 – 1 November 2026−2 h
- 1 November 2026 – 14 March 2027−3 h
- 14 March 2027 – 7 November 2027−2 h
- 7 November 2027 – 31 December 2027−3 h
Difference of Chicago from Buenos Aires. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
- Mon–Fri: 11:00–17:00 in Buenos Aires = 09:00–15:00 in Chicago · 6 h
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
11:00–17:00 in Buenos Aires = 09:00–15:00 in Chicago
Inside both working days (Mon–Fri).
- 05Weekend
Buenos Aires: Saturday and Sunday
Chicago: Saturday and Sunday
24 hours
A day in Buenos Aires, in Chicago
| Buenos Aires | Chicago | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 22:00Yesterday | |
| 01:00 | 23:00Yesterday | |
| 02:00 | 00:00 | |
| 03:00 | 01:00 | |
| 04:00 | 02:00 | |
| 05:00 | 03:00 | |
| 06:00 | 04:00 | |
| 07:00 | 05:00 | |
| 08:00 | 06:00 | |
| 09:00 | 07:00 | |
| 10:00 | 08:00 | |
| 11:00 | 09:00 | |
| 12:00 | 10:00 | |
| 13:00 | 11:00 | |
| 14:00 | 12:00 | |
| 15:00 | 13:00 | |
| 16:00 | 14:00 | |
| 17:00 | 15:00 | |
| 18:00 | 16:00 | |
| 19:00 | 17:00 | |
| 20:00 | 18:00 | |
| 21:00 | 19:00 | |
| 22:00 | 20:00 | |
| 23:00 | 21:00 |
Working hoursEarly or eveningNightWeekend
Plan a meeting: Buenos Aires and Chicago
More time differences with Chicago
Questions
Asked about Buenos Aires and Chicago
What is the time difference between Buenos Aires and Chicago?
Chicago is 2 hours behind Buenos Aires. This holds until 1 November 2026; then Chicago is 3 hours behind Buenos Aires.
What is the best time for a call between Buenos Aires and Chicago?
Inside both working days: Mon–Fri: 11:00–17:00 in Buenos Aires = 09:00–15:00 in Chicago · 6 h.
When does the time difference between Buenos Aires and Chicago change?
In the next 12 months it changes on: 1 November 2026 (−3 h); 14 March 2027 (−2 h).