Thunder Bay to Chicago Time Difference
Chicago is 1 hour behind Thunder Bay
24-Hour Comparison
Business hours Extended Off hours
Thunder Bay
04p
05p
06p
07p
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
06a
07a
08a
09a
10a
11a
12p
01p
02p
03p
Chicago
03p
04p
05p
06p
07p
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
06a
07a
08a
09a
10a
11a
12p
01p
02p
Each column is the same moment in both cities, starting from right now and rolling forward 24 hours — daylight saving is already accounted for.
Best Time to Call
On a typical weekday (Monday–Friday).
- 04:00 PM – 05:00 PM in Thunder Bay03:00 PM – 04:00 PM in Chicago
- 10:00 AM – 04:00 PM in Thunder Bay09:00 AM – 03:00 PM in Chicago
Frequently Asked Questions
- What is the time difference between Thunder Bay and Chicago?
- Chicago is 1 hour behind Thunder Bay. Thunder Bay is currently UTC-4 and Chicago is UTC-5.
- Is Chicago ahead of or behind Thunder Bay?
- Chicago is behind Thunder Bay.
- What is the best time to call Chicago from Thunder Bay?
- On a typical weekday, the best time is 04:00 PM–05:00 PM in Thunder Bay (03:00 PM–04:00 PM in Chicago), 10:00 AM–04:00 PM in Thunder Bay (09:00 AM–03:00 PM in Chicago), when both cities are within business hours.
- Does the time difference between Thunder Bay and Chicago change during the year?
- No. Neither city's daylight saving schedule changes the offset between them.