| Siheung-si East Gwillimbury | Eastern Time | 13:00 |
| Siheung-si Echt | United Kingdom Time | 08:00 |
| Siheung-si Nemesvámos | Central European Time | 07:00 |
| Siheung-si Vasai | India Standard Time | 03:30 |
| Siheung-si Tutuhan | Chamorro Standard Time | -01:00 |
| Siheung-si Amakusa | Japan Time | 00:00 |
| Siheung-si San Pedro La Laguna | Central Time | 15:00 |
| Siheung-si Bandon | Pacific Time | 16:00 |
| Siheung-si East Hampton | Eastern Time | 13:00 |
| Siheung-si Echternach | Central European Time | 07:00 |
| Siheung-si Okehampton | United Kingdom Time | 08:00 |
| Siheung-si Vasai | India Standard Time | 03:30 |
| Siheung-si Tuscola | Central Time | 14:00 |
| Siheung-si Alzenau | Central European Time | 07:00 |
| Siheung-si San Pedro | Central Time | 15:00 |
| Siheung-si Ascot Vale | Eastern Australia Time | -01:00 |
| Siheung-si East Greenwich | Eastern Time | 13:00 |
| Siheung-si Dell Rapids | Central Time | 14:00 |
| Siheung-si Okeechobee | Eastern Time | 13:00 |
| Siheung-si Vashon | Pacific Time | 16:00 |
| Siheung-si Tusmore | Central Australia Time | -00:30 |
| Siheung-si Alvarado | Central Time | 14:00 |
| Siheung-si Saint Ann | Central Time | 14:00 |
| Siheung-si Asendorf | Central European Time | 07:00 |
| Siheung-si Earlston | United Kingdom Time | 08:00 |
| Siheung-si Delémont | Central European Time | 07:00 |
| Siheung-si Nedlands | Western Australia Time | 01:00 |
| Siheung-si Wangara | Western Australia Time | 01:00 |
| Siheung-si Villaines-la-Juhel | Central European Time | 07:00 |
| Siheung-si Alvor | Western European Time | 08:00 |
| Siheung-si Saint Anthony | Central Time | 14:00 |
| Siheung-si Ascoli Satriano | Central European Time | 07:00 |
| Siheung-si Earlton | Eastern Time | 13:00 |
| Siheung-si Delaware Water Gap | Eastern Time | 13:00 |
| Siheung-si Neckartailfingen | Central European Time | 07:00 |
| Siheung-si Wanguri | Central Australia Time | -00:30 |
| Siheung-si Uesslingen-Buch | Central European Time | 07:00 |
| Siheung-si Alverca do Ribatejo | Western European Time | 08:00 |
| Siheung-si Saint Anton am Arlberg | Central European Time | 07:00 |
| Siheung-si Ascona | Central European Time | 07:00 |
| Siheung-si Earley | United Kingdom Time | 08:00 |
| Siheung-si East Rutherford | Eastern Time | 13:00 |
| Siheung-si Nébias | Central European Time | 07:00 |
| Siheung-si Wamego | Central Time | 14:00 |
| Siheung-si Villaga | Central European Time | 07:00 |
| Siheung-si Altstätten | Central European Time | 07:00 |
| Siheung-si Saint-Aunès | Central European Time | 07:00 |
| Siheung-si Ashbourne | United Kingdom Time | 08:00 |
| Siheung-si Easebourne | United Kingdom Time | 08:00 |
| Siheung-si East Victoria Park | Western Australia Time | 01:00 |