Sudbury to Chicago time converter

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

Sudbury EDT

Wednesday, October 21, 2026

Chicago CDT

Wednesday, October 21, 2026

Sudbury
Massachusetts, United States
Wed, Oct 21
EDTUTC-4
Chicago
Illinois, United States
Wed, Oct 21
CDTUTC-5-1h
Finding your time zone…
Shared working hours (9:00–18:00)

Sudbury to Chicago conversion table

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

SudburyChicago
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 Sudbury (9:00 AM – 5:00 PM in Chicago).

Daylight saving time and the difference

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

  • Oct 21, 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 21, 2027: -1h

Distance

Sudbury and Chicago are 1,338 km (831 miles) apart in a straight line.

More conversions

Chicago to SudburySudbury to New YorkSudbury to LondonSudbury to Los AngelesSudbury to TorontoSudbury to São PauloSudbury to ParisSudbury to BerlinSudbury to MoscowSudbury to DubaiSudbury to New DelhiSudbury to BangkokSudbury 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 Sudbury and Chicago?

Chicago is 1 hour behind Sudbury.

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

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

When is the best time to call Chicago from Sudbury?

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

Does the time difference between Sudbury 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.