Chicago is 1 hour ahead of Calgary. Calgary is UTC-6. Chicago is UTC-5.
Calgary on 15 October 2026: sunrise 08:00, sunset 18:43, day length 10 h 43 min.
Chicago on 15 October 2026: sunrise 07:03, sunset 18:08, day length 11 h 6 min.
For Calgary and Chicago: Calgary has no clock change scheduled in the next year. January and July both use UTC-6.
For Chicago and Calgary: The next clock change in Chicago is 1 hour back on 1 November 2026 at 02:00, from UTC-5 to UTC-6.
| Change |
|---|
| The gap changes on 1 November 2026 at 02:00, when clocks in Chicago move back 1 hour. |
| The gap changes on 14 March 2027 at 02:00, when clocks in Chicago move forward 1 hour. |
| The gap changes on 7 November 2027 at 02:00, when clocks in Chicago move back 1 hour. |
| View | 09:00 to 17:00 |
|---|---|
| From Calgary | Calgary 09:00 to 16:00; Chicago 10:00 to 17:00 |
| From Chicago | Chicago 10:00 to 17:00; Calgary 09:00 to 16:00 |
| 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 (next day) |
| City | Longest day | Shortest day |
|---|---|---|
| Calgary with Chicago | 21 June 2026, 16 h 33 min | 21 December 2026, 7 h 54 min |
| Chicago with Calgary | 21 June 2026, 15 h 14 min | 21 December 2026, 9 h 8 min |
| City | Date | Holiday |
|---|---|---|
| Calgary and Chicago | 11 November 2026 | Remembrance Day |
| Calgary and Chicago | 25 December 2026 | Christmas Day |
| Chicago and Calgary | 11 November 2026 | Veterans Day |
| Chicago and Calgary | 26 November 2026 | Thanksgiving Day |