| Jeju-si Shanghai | China Time | 01:00 |
| Jeju-si Istanbul | Turkey Time | 06:00 |
| Jeju-si Buenos Aires | Argentina Time | 12:00 |
| Jeju-si Mumbai | India Standard Time | 03:30 |
| Jeju-si Mexico City | Central Time | 15:00 |
| Jeju-si Beijing | China Time | 01:00 |
| Jeju-si Karachi | Pakistan Time | 04:00 |
| Jeju-si Tianjin | China Time | 01:00 |
| Jeju-si Guangzhou | China Time | 01:00 |
| Jeju-si Delhi | India Standard Time | 03:30 |
| Jeju-si Moscow | Moscow Time | 06:00 |
| Jeju-si Shenzhen | China Time | 01:00 |
| Jeju-si Dhaka | Bangladesh Time | 03:00 |
| Jeju-si Seoul | Korean Time | 00:00 |
| Jeju-si São Paulo | Brasilia Time | 12:00 |
| Jeju-si Wuhan | China Time | 01:00 |
| Jeju-si Lagos | West Africa Time | 08:00 |
| Jeju-si Jakarta | Western Indonesia Time | 02:00 |
| Jeju-si Tokyo | Japan Time | 00:00 |
| Jeju-si New York | Eastern Time | 14:00 |
| Jeju-si Dongguan | China Time | 01:00 |
| Jeju-si Taipei | Taipei Time | 01:00 |
| Jeju-si Kinshasa | West Africa Time | 08:00 |
| Jeju-si Lima | Peru Time | 14:00 |
| Jeju-si Cairo | Eastern European Time | 07:00 |
| Jeju-si Bogotá | Colombia Time | 14:00 |
| Jeju-si London | United Kingdom Time | 09:00 |
| Jeju-si Chongqing | China Time | 01:00 |
| Jeju-si Chengdu | China Time | 01:00 |
| Jeju-si Baghdad | Arabian Time | 06:00 |
| Jeju-si Nanjing | China Time | 01:00 |
| Jeju-si Tehran | Iran Time | 05:30 |
| Jeju-si Nanchong | China Time | 01:00 |
| Jeju-si Hong Kong | Hong Kong Time | 01:00 |
| Jeju-si Hsi-an | China Time | 01:00 |
| Jeju-si Lahore | Pakistan Time | 04:00 |
| Jeju-si Shenyang | China Time | 01:00 |
| Jeju-si Hangzhou | China Time | 01:00 |
| Jeju-si Rio de Janeiro | Brasilia Time | 12:00 |
| Jeju-si Harbin | China Time | 01:00 |
| Jeju-si Tai’an | China Time | 01:00 |
| Jeju-si Suzhou | China Time | 01:00 |
| Jeju-si Shantou | China Time | 01:00 |
| Jeju-si Bangkok | Indochina Time | 02:00 |
| Jeju-si Bangalore | India Standard Time | 03:30 |
| Jeju-si Saint Petersburg | Moscow Time | 06:00 |
| Jeju-si Santiago | Chile Time | 12:00 |
| Jeju-si Kolkata | India Standard Time | 03:30 |
| Jeju-si Syd | Eastern Australia Time | -02:00 |
| Jeju-si Yangon | Myanmar Time | 02:30 |