| Merthyr Tydfil Time | MDT | |
|---|---|---|
| 11:00 PM Monday Merthyr Tydfil Time (BST) | ↔ | 04:00 PM Monday MDT |
| 12:00 AM Tuesday Merthyr Tydfil Time (BST) | ↔ | 05:00 PM Monday MDT |
| 01:00 AM Tuesday Merthyr Tydfil Time (BST) | ↔ | 06:00 PM Monday MDT |
| 02:00 AM Tuesday Merthyr Tydfil Time (BST) | ↔ | 07:00 PM Monday MDT |
| 03:00 AM Tuesday Merthyr Tydfil Time (BST) | ↔ | 08:00 PM Monday MDT |