Chicago to Buenos Aires time converter

Buenos Aires is 2 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 11:00 AM in Buenos Aires.

Chicago CDT

Sunday, October 18, 2026

Buenos Aires ART

Sunday, October 18, 2026

Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5
Buenos Aires
Argentina
Sun, Oct 18
ARTUTC-3+2h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Buenos Aires conversion table

Every hour of today in Chicago and the matching time in Buenos Aires. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Both sides are at work from 9:00 AM – 4:00 PM in Chicago (11:00 AM – 6:00 PM in Buenos Aires).

Daylight saving time and the difference

The difference changes during the year because Chicago and Buenos Aires switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: +2h
  • Nov 1, 2026 – Mar 14, 2027: +3h
  • Mar 14, 2027 – Oct 18, 2027: +2h

Distance

Chicago and Buenos Aires are 9,011 km (5,599 miles) apart in a straight line.

More conversions

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New York to Buenos AiresLondon to Buenos AiresLos Angeles to Buenos AiresToronto to Buenos AiresSão Paulo to Buenos AiresParis to Buenos AiresBerlin to Buenos AiresMoscow to Buenos AiresDubai to Buenos AiresNew Delhi to Buenos AiresBangkok to Buenos AiresSingapore to Buenos Aires

Questions and answers

What is the time difference between Chicago and Buenos Aires?

Buenos Aires is 2 hours ahead of Chicago.

What time is it in Buenos Aires when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 11:00 AM in Buenos Aires.

When is the best time to call Buenos Aires from Chicago?

Both sides are at work from 9:00 AM – 4:00 PM in Chicago (11:00 AM – 6:00 PM in Buenos Aires).

Does the time difference between Chicago and Buenos Aires change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.