| Calumet City Time | BST | |
|---|---|---|
| 10:00 PM Monday Calumet City Time (CDT) | ↔ | 04:00 AM Tuesday BST |
| 11:00 PM Monday Calumet City Time (CDT) | ↔ | 05:00 AM Tuesday BST |
| 12:00 AM Tuesday Calumet City Time (CDT) | ↔ | 06:00 AM Tuesday BST |
| 01:00 AM Tuesday Calumet City Time (CDT) | ↔ | 07:00 AM Tuesday BST |
| 02:00 AM Tuesday Calumet City Time (CDT) | ↔ | 08:00 AM Tuesday BST |