| Porth Time | GMT | |
|---|---|---|
| 12:00 AM Monday Porth Time (BST) | ↔ | 11:00 PM Sunday GMT |
| 01:00 AM Monday Porth Time (BST) | ↔ | 12:00 AM Monday GMT |
| 02:00 AM Monday Porth Time (BST) | ↔ | 01:00 AM Monday GMT |
| 03:00 AM Monday Porth Time (BST) | ↔ | 02:00 AM Monday GMT |
| 04:00 AM Monday Porth Time (BST) | ↔ | 03:00 AM Monday GMT |