| Merthyr Tydfil Time | EDT | |
|---|---|---|
| 06:00 AM Monday Merthyr Tydfil Time (BST) | ↔ | 01:00 AM Monday EDT |
| 07:00 AM Monday Merthyr Tydfil Time (BST) | ↔ | 02:00 AM Monday EDT |
| 08:00 AM Monday Merthyr Tydfil Time (BST) | ↔ | 03:00 AM Monday EDT |
| 09:00 AM Monday Merthyr Tydfil Time (BST) | ↔ | 04:00 AM Monday EDT |
| 10:00 AM Monday Merthyr Tydfil Time (BST) | ↔ | 05:00 AM Monday EDT |