| Calumet City Time | GMT | |
|---|---|---|
| 11:00 PM Sunday Calumet City Time (CDT) | ↔ | 04:00 AM Monday GMT |
| 12:00 AM Monday Calumet City Time (CDT) | ↔ | 05:00 AM Monday GMT |
| 01:00 AM Monday Calumet City Time (CDT) | ↔ | 06:00 AM Monday GMT |
| 02:00 AM Monday Calumet City Time (CDT) | ↔ | 07:00 AM Monday GMT |
| 03:00 AM Monday Calumet City Time (CDT) | ↔ | 08:00 AM Monday GMT |