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