Time difference between Calgary and Chicago
World time board
Calgary · CanadaUTC-06:00
12:15 AMFRI 02.10.2026
Now 12:15 AM|Live
Drag or scroll · click an hour · ◀ ▶ by hour · 3 days of range
Work–
daydawn / dusknight
- Time difference
- Calgary is 1 hour behind
- Changes with DST
- Yes
- Day difference
- Same day
- Typical workday overlap (9am–6pm)
- 8 hours
| Calgary | Chicago |
|---|---|
| 00:00 | 01:00 |
| 01:00 | 02:00 |
| 02:00 | 03:00 |
| 03:00 | 04:00 |
| 04:00 | 05:00 |
| 05:00 | 06:00 |
| 06:00 | 07:00 |
| 07:00 | 08:00 |
| 08:00 | 09:00 |
| 09:00 | 10:00 |
| 10:00 | 11:00 |
| 11:00 | 12:00 |
| 12:00 | 13:00 |
| 13:00 | 14:00 |
| 14:00 | 15:00 |
| 15:00 | 16:00 |
| 16:00 | 17:00 |
| 17:00 | 18:00 |
| 18:00 | 19:00 |
| 19:00 | 20:00 |
| 20:00 | 21:00 |
| 21:00 | 22:00 |
| 22:00 | 23:00 |
| 23:00 | 00:00+1 |
How the time difference changes over the next 12 months
| Period | Difference |
|---|---|
| until November 1, 2026 | Calgary is 1 hour behind |
| November 1, 2026 – March 14, 2027 | same time |
| from March 14, 2027 | Calgary is 1 hour behind |
Only Chicago changes its clocks, so the difference shifts twice a year.
Working hours
With a 9:00 AM–6:00 PM working day in both places, the shared hours are 9:00 AM–5:00 PM in Calgary, which is 10:00 AM–6:00 PM in Chicago (8 hours a day).
From 11:00 PM to midnight in Calgary, it is already the next day in Chicago.
Frequently asked questions
- What is the time difference between Calgary and Chicago?
- Calgary is 1 hour behind Chicago. November 1, 2026 – March 14, 2027: Calgary and Chicago currently show the same time.
- Does the time difference between Calgary and Chicago change during the year?
- Yes. Only Chicago changes its clocks, so the difference shifts twice a year. November 1, 2026 – March 14, 2027: Calgary and Chicago currently show the same time.