Chicago to Ottawa South Time Difference
Ottawa South is 1 hour ahead of Chicago
24-Hour Comparison
Business hours Extended Off hours
Chicago
07p
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
06a
07a
08a
09a
10a
11a
12p
01p
02p
03p
04p
05p
06p
Ottawa South
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
06a
07a
08a
09a
10a
11a
12p
01p
02p
03p
04p
05p
06p
07p
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).
- 09:00 AM – 04:00 PM in Chicago10:00 AM – 05:00 PM in Ottawa South
Frequently Asked Questions
- What is the time difference between Chicago and Ottawa South?
- Ottawa South is 1 hour ahead of Chicago. Chicago is currently UTC-5 and Ottawa South is UTC-4.
- Is Ottawa South ahead of or behind Chicago?
- Ottawa South is ahead of Chicago.
- What is the best time to call Ottawa South from Chicago?
- On a typical weekday, the best time is 09:00 AM–04:00 PM in Chicago (10:00 AM–05:00 PM in Ottawa South), when both cities are within business hours.
- Does the time difference between Chicago and Ottawa South change during the year?
- No. Neither city's daylight saving schedule changes the offset between them.