Buenos Aires & Chicago time difference

Chicago is 2 hours behind Buenos Aires (3 hours in winter). Current time, 24-hour table, DST changes and the best time to call.

Chicago is 2 hours behind Buenos Aires (3 hours in winter).

City Comparison Insights

  • Buenos Aires — Argentina, America/Argentina/Buenos_Aires (UTC-3), ARS, Local time: 20:37
  • Chicago — United States, America/Chicago (UTC-5), USD, Local time: 18:37

Buenos Aires to Chicago time conversion table (24 hours)

Each hour in Buenos Aires with the matching time in Chicago. +1 is the next day, −1 the previous day.

Buenos AiresChicago
00:0022:00 −1
01:0023:00 −1
02:0000:00
03:0001:00
04:0002:00
05:0003:00
06:0004:00
07:0005:00
08:0006:00
09:0007:00
10:0008:00
11:0009:00
12:0010:00
13:0011:00
14:0012:00
15:0013:00
16:0014:00
17:0015:00
18:0016:00
19:0017:00
20:0018:00
21:0019:00
22:0020:00
23:0021:00

Best time to call or meet

Business hours overlap: Buenos Aires 11:00–17:00 = Chicago 09:00–15:00.

Daylight saving time (DST)

  • Summer time: 2 hours / Winter time: 3 hours.
  • From November 1, 2026, the difference becomes 3 hours.
  • From March 14, 2027, the difference becomes 2 hours.
  • Buenos Aires: no daylight saving time.
  • Chicago: UTC offset changes from UTC−5 to UTC−6 on November 1, 2026.

Frequently asked questions

What is the time difference between Buenos Aires and Chicago?

Chicago is 2 hours behind Buenos Aires (3 hours in winter).

What time is it in Chicago when it is 9:00 in Buenos Aires?

When it is 9:00 in Buenos Aires, it is 07:00 in Chicago.

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

Business hours overlap: Buenos Aires 11:00–17:00 = Chicago 09:00–15:00.

Does daylight saving time change the time difference between Buenos Aires and Chicago?

Summer time: 2 hours / Winter time: 3 hours. From November 1, 2026, the difference becomes 3 hours.

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