Time difference between Buenos Aires and Chicago
World time board
Buenos Aires · ArgentinaUTC-03:00
04:36 AMFRI 02.10.2026
Now 04:36 AM|Live
Drag or scroll · click an hour · ◀ ▶ by hour · 3 days of range
Work–
daydawn / dusknight
- Time difference
- Buenos Aires is 2 hours ahead
- Changes with DST
- Yes
- Day difference
- Same day
- Typical workday overlap (9am–6pm)
- 7 hours
| Buenos Aires | Chicago |
|---|---|
| 00:00 | 22:00-1 |
| 01:00 | 23:00-1 |
| 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 |
How the time difference changes over the next 12 months
| Period | Difference |
|---|---|
| until November 1, 2026 | Buenos Aires is 2 hours ahead |
| November 1, 2026 – March 14, 2027 | Buenos Aires is 3 hours ahead |
| from March 14, 2027 | Buenos Aires is 2 hours ahead |
Only Chicago changes its clocks, so the difference shifts twice a year.
Working hours
With a 9:00 AM–6:00 PM working day in both places, the shared hours are 11:00 AM–6:00 PM in Buenos Aires, which is 9:00 AM–4:00 PM in Chicago (7 hours a day).
From midnight to 2:00 AM in Buenos Aires, it is still the previous day in Chicago.
Frequently asked questions
- What is the time difference between Buenos Aires and Chicago?
- Buenos Aires is 2 hours ahead of Chicago. November 1, 2026 – March 14, 2027: Buenos Aires is 3 hours ahead of Chicago.
- Does the time difference between Buenos Aires and Chicago change during the year?
- Yes. Only Chicago changes its clocks, so the difference shifts twice a year. November 1, 2026 – March 14, 2027: Buenos Aires is 3 hours ahead of Chicago.