Union to Chicago time converter

Chicago is 1 hour behind Union. When it is 9:00 AM in Union, it is 8:00 AM in Chicago.

Union EDT

Saturday, October 17, 2026

Chicago CDT

Saturday, October 17, 2026

Union
New Jersey, United States
Sat, Oct 17
EDTUTC-4
Chicago
Illinois, United States
Sat, Oct 17
CDTUTC-5-1h
Finding your time zone…
Shared working hours (9:00–18:00)

Union to Chicago conversion table

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

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

Best time to call or meet

Both sides are at work from 10:00 AM – 6:00 PM in Union (9:00 AM – 5:00 PM in Chicago).

Daylight saving time and the difference

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

  • Oct 17, 2026 – Nov 1, 2026: -1h
  • Nov 1, 2026 – Nov 1, 2026: ±0
  • Nov 1, 2026 – Mar 14, 2027: -1h
  • Mar 14, 2027 – Mar 14, 2027: -2h
  • Mar 14, 2027 – Oct 17, 2027: -1h

Distance

Union and Chicago are 1,125 km (699 miles) apart in a straight line.

More conversions

Chicago to UnionUnion to New YorkUnion to LondonUnion to Los AngelesUnion to TorontoUnion to São PauloUnion to ParisUnion to BerlinUnion to MoscowUnion to DubaiUnion to New DelhiUnion to BangkokUnion 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 Union and Chicago?

Chicago is 1 hour behind Union.

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

When it is 9:00 AM in Union, it is 8:00 AM in Chicago.

When is the best time to call Chicago from Union?

Both sides are at work from 10:00 AM – 6:00 PM in Union (9:00 AM – 5:00 PM in Chicago).

Does the time difference between Union 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.