| Merthyr Tydfil Time | HST | |
|---|---|---|
| 12:00 PM Monday Merthyr Tydfil Time (BST) | ↔ | 01:00 AM Monday HST |
| 01:00 PM Monday Merthyr Tydfil Time (BST) | ↔ | 02:00 AM Monday HST |
| 02:00 PM Monday Merthyr Tydfil Time (BST) | ↔ | 03:00 AM Monday HST |
| 03:00 PM Monday Merthyr Tydfil Time (BST) | ↔ | 04:00 AM Monday HST |
| 04:00 PM Monday Merthyr Tydfil Time (BST) | ↔ | 05:00 AM Monday HST |