| Porthmadog Time | MSK | |
|---|---|---|
| 12:03 AM Monday Porthmadog Time (BST) | ↔ | 02:03 AM Monday MSK |
| 01:03 AM Monday Porthmadog Time (BST) | ↔ | 03:03 AM Monday MSK |
| 02:03 AM Monday Porthmadog Time (BST) | ↔ | 04:03 AM Monday MSK |
| 03:03 AM Monday Porthmadog Time (BST) | ↔ | 05:03 AM Monday MSK |
| 04:03 AM Monday Porthmadog Time (BST) | ↔ | 06:03 AM Monday MSK |