União to Chicago time converter

Chicago is 2 hours behind União. When it is 9:00 AM in União, it is 7:00 AM in Chicago.

União BRT

Sunday, October 18, 2026

Chicago CDT

Sunday, October 18, 2026

União
Piauí, Brazil
Sun, Oct 18
BRTUTC-3
Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5-2h
Finding your time zone…
Shared working hours (9:00–18:00)

União to Chicago conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

The difference changes during the year because União and Chicago 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

União and Chicago are 6,864 km (4,265 miles) apart in a straight line.

More conversions

Chicago to UniãoUnião to New YorkUnião to LondonUnião to Los AngelesUnião to TorontoUnião to São PauloUnião to ParisUnião to BerlinUnião to MoscowUnião to DubaiUnião to New DelhiUnião to BangkokUnião to Singapore
New York to ChicagoLondon to ChicagoLos Angeles to ChicagoToronto to ChicagoSão Paulo to ChicagoParis to ChicagoBerlin to ChicagoMoscow to ChicagoDubai to ChicagoNew Delhi to ChicagoBangkok to ChicagoSingapore to Chicago

Questions and answers

What is the time difference between União and Chicago?

Chicago is 2 hours behind União.

What time is it in Chicago when it is 9 AM in União?

When it is 9:00 AM in União, it is 7:00 AM in Chicago.

When is the best time to call Chicago from União?

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

Does the time difference between União and Chicago change?

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