Billerica to Chicago time converter

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

Billerica EDT

Monday, October 19, 2026

Chicago CDT

Sunday, October 18, 2026

Billerica
Massachusetts, United States
Mon, Oct 19
EDTUTC-4
Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5-1h
Finding your time zone…
Shared working hours (9:00–18:00)

Billerica to Chicago conversion table

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

BillericaChicago
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 Billerica (9:00 AM – 5:00 PM in Chicago).

Daylight saving time and the difference

The difference changes during the year because Billerica 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

Billerica and Chicago are 1,349 km (838 miles) apart in a straight line.

More conversions

Chicago to BillericaBillerica to New YorkBillerica to LondonBillerica to Los AngelesBillerica to TorontoBillerica to São PauloBillerica to ParisBillerica to BerlinBillerica to MoscowBillerica to DubaiBillerica to New DelhiBillerica to BangkokBillerica 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 Billerica and Chicago?

Chicago is 1 hour behind Billerica.

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

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

When is the best time to call Chicago from Billerica?

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

Does the time difference between Billerica 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.