| Seoul Léon | Central European Time | 08:00 |
| Seoul Richmond | Eastern Time | 14:00 |
| Seoul Les Diablerets | Central European Time | 08:00 |
| Seoul Lerici | Central European Time | 08:00 |
| Seoul L'Escala | Central European Time | 08:00 |
| Seoul Lescar | Central European Time | 08:00 |
| Seoul Lesignano de' Bagni | Central European Time | 08:00 |
| Seoul Letenye | Central European Time | 08:00 |
| Seoul Lutherville-Timonium | Eastern Time | 14:00 |
| Seoul Luverne | Central Time | 15:00 |
| Seoul Luserna San Giovanni | Central European Time | 08:00 |
| Seoul Luquillo | Atlantic Time | 13:00 |
| Seoul Lynnfield | Eastern Time | 14:00 |
| Seoul Lyss | Central European Time | 08:00 |
| Seoul Lviv | Eastern European Time | 07:00 |
| Seoul Lyneham | Eastern Australia Time | -02:00 |
| Seoul Lyminge | United Kingdom Time | 09:00 |
| Seoul Lydney | United Kingdom Time | 09:00 |
| Seoul Luzerne | Eastern Time | 14:00 |
| Seoul Macduff | United Kingdom Time | 09:00 |
| Seoul Macedonia | Eastern Time | 14:00 |
| Seoul Macatawa | Eastern Time | 14:00 |
| Seoul La Feria | Central Time | 15:00 |
| Seoul La Escalona | Western European Time | 09:00 |
| Seoul La Cumbre | Argentina Time | 12:00 |
| Seoul La Croix-sur-Gartempe | Central European Time | 08:00 |
| Seoul La Jonquera | Central European Time | 08:00 |
| Seoul La Joya | Central Time | 15:00 |
| Seoul La Horqueta | Argentina Time | 12:00 |
| Seoul La Cassa | Central European Time | 08:00 |
| Seoul La Bisbal d'Empordà | Central European Time | 08:00 |
| Seoul Sakyo Ward | Japan Time | 00:00 |
| Seoul Lentate sul Seveso | Central European Time | 08:00 |
| Seoul Lenox | Eastern Time | 14:00 |
| Seoul Lekki | West Africa Time | 08:00 |
| Seoul Lemoyne | Eastern Time | 14:00 |
| Seoul La Palma | Central European Time | 08:00 |
| Seoul Leichhardt | Eastern Australia Time | -02:00 |
| Seoul Leirvik | Central European Time | 08:00 |
| Seoul Leiston | United Kingdom Time | 09:00 |
| Seoul La Matanza de Acentejo | Western European Time | 09:00 |
| Seoul Karumathampatti | India Standard Time | 03:30 |
| Seoul Kartal | Turkey Time | 06:00 |
| Seoul Karnak | Central Time | 15:00 |
| Seoul Karon | Indochina Time | 02:00 |
| Seoul Karlsborg | Central European Time | 08:00 |
| Seoul Karkkila | Eastern European Time | 07:00 |
| Seoul Jesus Maria | Peru Time | 14:00 |
| Seoul Jessup | Eastern Time | 14:00 |
| Seoul Kardinya | Western Australia Time | 01:00 |