Casper to Chicago time converter

Chicago is 1 hour ahead of Casper. When it is 9:00 AM in Casper, it is 10:00 AM in Chicago.

Casper MDT

Friday, October 16, 2026

Chicago CDT

Saturday, October 17, 2026

Casper
Wyoming, United States
Fri, Oct 16
MDTUTC-6
Chicago
Illinois, United States
Sat, Oct 17
CDTUTC-5+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Casper to Chicago conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 16, 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 16, 2027: +1h

Distance

Casper and Chicago are 1,534 km (953 miles) apart in a straight line.

More conversions

Chicago to CasperCasper to New YorkCasper to LondonCasper to Los AngelesCasper to TorontoCasper to São PauloCasper to ParisCasper to BerlinCasper to MoscowCasper to DubaiCasper to New DelhiCasper to BangkokCasper 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 Casper and Chicago?

Chicago is 1 hour ahead of Casper.

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

When it is 9:00 AM in Casper, it is 10:00 AM in Chicago.

When is the best time to call Chicago from Casper?

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

Does the time difference between Casper 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.