Dorchester to Chicago time converter

Chicago is 6 hours behind Dorchester. When it is 9:00 AM in Dorchester, it is 3:00 AM in Chicago.

Dorchester BST

Wednesday, October 21, 2026

Chicago CDT

Tuesday, October 20, 2026

United Kingdom
Wed, Oct 21
BSTUTC+1
Illinois, United States
Tue, Oct 20
CDTUTC-5-6h
Finding your time zone…

1:31 AM in Dorchester, Wednesday, October 21, 2026

Shared working hours (9:00–18:00)

Dorchester to Chicago conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 25, 2026: -6h
  • Oct 25, 2026 – Nov 1, 2026: -5h
  • Nov 1, 2026 – Mar 14, 2027: -6h
  • Mar 14, 2027 – Mar 28, 2027: -5h
  • Mar 28, 2027 – Oct 21, 2027: -6h

Distance

Dorchester and Chicago are 6,253 km (3,885 miles) apart in a straight line.

More conversions

Questions and answers

What is the time difference between Dorchester and Chicago?

Chicago is 6 hours behind Dorchester.

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

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

When is the best time to call Chicago from Dorchester?

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

Does the time difference between Dorchester 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.