Chicago to Castlereagh time converter

Castlereagh is 6 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 3:00 PM in Castlereagh.

Chicago CDT

Sunday, October 18, 2026

Castlereagh BST

Sunday, October 18, 2026

Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5
Castlereagh
United Kingdom
Sun, Oct 18
BSTUTC+1+6h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Castlereagh conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 12:00 PM in Chicago (3:00 PM – 6:00 PM in Castlereagh).

Daylight saving time and the difference

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

  • Oct 18, 2026 – Oct 24, 2026: +6h
  • Oct 24, 2026 – Nov 1, 2026: +5h
  • Nov 1, 2026 – Mar 14, 2027: +6h
  • Mar 14, 2027 – Mar 27, 2027: +5h
  • Mar 27, 2027 – Oct 18, 2027: +6h

Distance

Chicago and Castlereagh are 5,864 km (3,644 miles) apart in a straight line.

More conversions

Castlereagh to ChicagoChicago to New YorkChicago to LondonChicago to Los AngelesChicago to TorontoChicago to São PauloChicago to ParisChicago to BerlinChicago to MoscowChicago to DubaiChicago to New DelhiChicago to BangkokChicago to Singapore
New York to CastlereaghLondon to CastlereaghLos Angeles to CastlereaghToronto to CastlereaghSão Paulo to CastlereaghParis to CastlereaghBerlin to CastlereaghMoscow to CastlereaghDubai to CastlereaghNew Delhi to CastlereaghBangkok to CastlereaghSingapore to Castlereagh

Questions and answers

What is the time difference between Chicago and Castlereagh?

Castlereagh is 6 hours ahead of Chicago.

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

When it is 9:00 AM in Chicago, it is 3:00 PM in Castlereagh.

When is the best time to call Castlereagh from Chicago?

Both sides are at work from 9:00 AM – 12:00 PM in Chicago (3:00 PM – 6:00 PM in Castlereagh).

Does the time difference between Chicago and Castlereagh change?

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