| Jeju-si Volgograd | Volgograd Time | 06:00 |
| Jeju-si Nova Iguaçu | Brasilia Time | 12:00 |
| Jeju-si Jieyang | China Time | 01:00 |
| Jeju-si Odessa | Eastern European Time | 07:00 |
| Jeju-si Zhu Cheng City | China Time | 01:00 |
| Jeju-si Shivaji Nagar | India Standard Time | 03:30 |
| Jeju-si Kitakyushu | Japan Time | 00:00 |
| Jeju-si Solapur | India Standard Time | 03:30 |
| Jeju-si Baoding | China Time | 01:00 |
| Jeju-si Guatemala City | Central Time | 15:00 |
| Jeju-si Benxi | China Time | 01:00 |
| Jeju-si Zapopan | Central Time | 15:00 |
| Jeju-si Birmingham | United Kingdom Time | 09:00 |
| Jeju-si Perm | Yekaterinburg Time | 04:00 |
| Jeju-si Srinagar | India Standard Time | 03:30 |
| Jeju-si Zaria | West Africa Time | 08:00 |
| Jeju-si Managua | Central Time | 15:00 |
| Jeju-si Port Elizabeth | South Africa Standard Time | 07:00 |
| Jeju-si Fes | Western European Time | 08:00 |
| Jeju-si Cologne | Central European Time | 08:00 |
| Jeju-si Ulsan | Korean Time | 00:00 |
| Jeju-si Chandigarh | India Standard Time | 03:30 |
| Jeju-si Coimbatore | India Standard Time | 03:30 |
| Jeju-si Naples | Central European Time | 08:00 |
| Jeju-si Maceió | Brasilia Time | 12:00 |
| Jeju-si Cartagena | Colombia Time | 14:00 |
| Jeju-si Changzhou | China Time | 01:00 |
| Jeju-si Sulţānah | Arabian Time | 06:00 |
| Jeju-si Monrovia | Greenwich Mean Time | 09:00 |
| Jeju-si Kingston | Eastern Time | 14:00 |
| Jeju-si Erbil | Arabian Time | 06:00 |
| Jeju-si Austin | Central Time | 15:00 |
| Jeju-si Krasnoyarsk | Krasnoyarsk Time | 02:00 |
| Jeju-si Naypyitaw | Myanmar Time | 02:30 |
| Jeju-si Jodhpur | India Standard Time | 03:30 |
| Jeju-si Chiba | Japan Time | 00:00 |
| Jeju-si São Luís | Brasilia Time | 12:00 |
| Jeju-si Madurai | India Standard Time | 03:30 |
| Jeju-si Sale | Western European Time | 08:00 |
| Jeju-si Huaibei | China Time | 01:00 |
| Jeju-si Cochabamba | Bolivia Time | 13:00 |
| Jeju-si Qom | Iran Time | 05:30 |
| Jeju-si Kaifeng | China Time | 01:00 |
| Jeju-si Bishkek | Kyrgyzstan Time | 03:00 |
| Jeju-si Abobo | Greenwich Mean Time | 09:00 |
| Jeju-si Abu Ghraib | Arabian Time | 06:00 |
| Jeju-si Guwahati | India Standard Time | 03:30 |
| Jeju-si Aba | West Africa Time | 08:00 |
| Jeju-si Pingdingshan | China Time | 01:00 |
| Jeju-si Gwalior | India Standard Time | 03:30 |