Chicago: Central Standard Time
Chicago, Illinois uses the America/Chicago time zone (CST).
Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−6 → UTC−5).
Chicago to Buenos Aires time
3 hours ahead of Chicago
Buenos Aires compared with Chicago, right now. Swap: Buenos Aires to Chicago ⇄
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Chicago to Buenos Aires conversion table
For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.
| Chicago | Buenos Aires |
|---|---|
| 12:00 AM | 3:00 AM |
| 1:00 AM | 4:00 AM |
| 2:00 AM | 5:00 AM |
| 3:00 AM | 6:00 AM |
| 4:00 AM | 7:00 AM |
| 5:00 AM | 8:00 AM |
| 6:00 AM | 9:00 AM |
| 7:00 AM | 10:00 AM |
| 8:00 AM | 11:00 AM |
| 9:00 AM | 12:00 PM |
| 10:00 AM | 1:00 PM |
| 11:00 AM | 2:00 PM |
| 12:00 PM | 3:00 PM |
| 1:00 PM | 4:00 PM |
| 2:00 PM | 5:00 PM |
| 3:00 PM | 6:00 PM |
| 4:00 PM | 7:00 PM |
| 5:00 PM | 8:00 PM |
| 6:00 PM | 9:00 PM |
| 7:00 PM | 10:00 PM |
| 8:00 PM | 11:00 PM |
| 9:00 PM | 12:00 AM (next day) |
| 10:00 PM | 1:00 AM (next day) |
| 11:00 PM | 2:00 AM (next day) |
About these time zones
Buenos Aires: Argentina Standard Time
Buenos Aires, Argentina uses the America/Argentina/Buenos_Aires time zone (UTC−3).
No clock change is scheduled; the offset stays the same all year.
Questions about Chicago and Buenos Aires time
What is the time difference between Chicago and Buenos Aires?
The current difference is shown at the top of this page. Chicago uses Central Standard Time (CST, UTC−6) as standard time and Central Daylight Time (CDT, UTC−5) during daylight saving time; Buenos Aires uses Argentina Standard Time (UTC−3, UTC−3) all year. The difference can change if only one side observes daylight saving time or if their clocks change on different dates. Choose your meeting date in the converter to check the applicable offset.
When it is 9:00 AM in Chicago, what time is it in Buenos Aires?
On Tuesday, November 3, 2026, 9:00 AM in Chicago was 12:00 PM in Buenos Aires. The conversion table above shows today’s values.
Do the clocks change in Chicago or Buenos Aires?
Chicago: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−6 → UTC−5). Buenos Aires does not change its clocks.
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