Castle Rock to Chicago time converter

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

Castle Rock MDT

Monday, October 19, 2026

Chicago CDT

Monday, October 19, 2026

Castle Rock
Colorado, United States
Mon, Oct 19
MDTUTC-6
Chicago
Illinois, United States
Mon, Oct 19
CDTUTC-5+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Castle Rock to Chicago conversion table

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

Castle RockChicago
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 Castle Rock (10:00 AM – 6:00 PM in Chicago).

Daylight saving time and the difference

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

  • Oct 19, 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 19, 2027: +1h

Distance

Castle Rock and Chicago are 1,476 km (917 miles) apart in a straight line.

More conversions

Chicago to Castle RockCastle Rock to New YorkCastle Rock to LondonCastle Rock to Los AngelesCastle Rock to TorontoCastle Rock to São PauloCastle Rock to ParisCastle Rock to BerlinCastle Rock to MoscowCastle Rock to DubaiCastle Rock to New DelhiCastle Rock to BangkokCastle Rock 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 Castle Rock and Chicago?

Chicago is 1 hour ahead of Castle Rock.

What time is it in Chicago when it is 9 AM in Castle Rock?

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

When is the best time to call Chicago from Castle Rock?

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

Does the time difference between Castle Rock 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.