Skip to content

Chicago to Buenos Aires time difference

Live time in both cities, a conversion table and the best hours to call.

Buenos Aires is 2 hours ahead of Chicago right now. It is 3 hours ahead in January and 2 hours ahead in July. When it is 9:00 AM in Chicago, it is 12:00 PM (winter) or 11:00 AM (summer) in Buenos Aires.

Chicago
--:--
Buenos Aires
--:--

Today, hour by hour

ChicagoBuenos Aires

Green rows are inside 9 AM–5 PM in both places.

Chicago to Buenos Aires time table

ChicagoBuenos Aires (January)Buenos Aires (July)
12:00 AM3:00 AM2:00 AM
1:00 AM4:00 AM3:00 AM
2:00 AM5:00 AM4:00 AM
3:00 AM6:00 AM5:00 AM
4:00 AM7:00 AM6:00 AM
5:00 AM8:00 AM7:00 AM
6:00 AM9:00 AM8:00 AM
7:00 AM10:00 AM9:00 AM
8:00 AM11:00 AM10:00 AM
9:00 AM12:00 PM11:00 AM
10:00 AM1:00 PM12:00 PM
11:00 AM2:00 PM1:00 PM
12:00 PM3:00 PM2:00 PM
1:00 PM4:00 PM3:00 PM
2:00 PM5:00 PM4:00 PM
3:00 PM6:00 PM5:00 PM
4:00 PM7:00 PM6:00 PM
5:00 PM8:00 PM7:00 PM
6:00 PM9:00 PM8:00 PM
7:00 PM10:00 PM9:00 PM
8:00 PM11:00 PM10:00 PM
9:00 PM12:00 AM (+1 day)11:00 PM
10:00 PM1:00 AM (+1 day)12:00 AM (+1 day)
11:00 PM2:00 AM (+1 day)1:00 AM (+1 day)

When the difference changes

DatesDifference
Oct 9, 2026 – Oct 31, 2026Buenos Aires is 2 hours ahead of Chicago
Nov 1, 2026 – Mar 13, 2027Buenos Aires is 3 hours ahead of Chicago
Mar 14, 2027 – Nov 6, 2027Buenos Aires is 2 hours ahead of Chicago
Nov 7, 2027 – Dec 31, 2027Buenos Aires is 3 hours ahead of Chicago

Chicago uses daylight saving time. Next clock changes: Nov 1, 2026 (to UTC-6), Mar 14, 2027 (to UTC-5). Buenos Aires does not use daylight saving time. It stays at UTC-3 all year.

Best time to call Buenos Aires, Argentina from Chicago

  • January: shared 9-to-5 hours are 9:00 AM–2:00 PM in Chicago (12:00 PM–5:00 PM in Buenos Aires).
  • July: shared 9-to-5 hours are 9:00 AM–3:00 PM in Chicago (11:00 AM–5:00 PM in Buenos Aires).

Buenos Aires vs other US time zones

US cityJanuaryJuly
New York2 hours ahead1 hour ahead
Chicago3 hours ahead2 hours ahead
Denver4 hours ahead3 hours ahead
Phoenix4 hours ahead4 hours ahead
Los Angeles5 hours ahead4 hours ahead

Convert a different date with the time zone converter, or plan a call with the meeting planner.

Frequently asked questions

What is the time difference between Chicago and Buenos Aires?

Buenos Aires is 3 hours ahead of Chicago in January and 2 hours ahead in July.

If it is 8 PM in Chicago, what time is it in Buenos Aires?

11:00 PM in winter and 10:00 PM in summer.

Does Buenos Aires use daylight saving time?

Buenos Aires does not use daylight saving time. It stays at UTC-3 all year.