| Grudziądz Vinnytsia | Eastern European Time | -01:00 |
| Grudziądz Apodaca | Central Time | 07:00 |
| Grudziądz Anshun | China Time | -06:00 |
| Grudziądz Suita | Japan Time | -07:00 |
| Grudziądz Ixtapaluca | Central Time | 07:00 |
| Grudziądz Wakayama | Japan Time | -07:00 |
| Grudziądz Anaheim | Pacific Time | 09:00 |
| Grudziądz Hualien City | Taipei Time | -06:00 |
| Grudziądz Lapu-Lapu City | Philippine Time | -06:00 |
| Grudziądz Diepsloot | South Africa Standard Time | 00:00 |
| Grudziądz Punasa | India Standard Time | -03:30 |
| Grudziądz Muzaffarnagar | India Standard Time | -03:30 |
| Grudziądz Nuevo Laredo | Central Time | 07:00 |
| Grudziądz Florence | Central European Time | 00:00 |
| Grudziądz Sanandaj | Iran Time | -02:30 |
| Grudziądz Latur | India Standard Time | -03:30 |
| Grudziądz Campina Grande | Brasilia Time | 05:00 |
| Grudziądz Etobicoke | Eastern Time | 06:00 |
| Grudziądz Camaguey | Cuba Time | 06:00 |
| Grudziądz London | Eastern Time | 06:00 |
| Grudziądz Chifeng | China Time | -06:00 |
| Grudziądz Hŭngnam | Pyongyang Time | -07:00 |
| Grudziądz Astana | East Kazakhstan Time | -04:00 |
| Grudziądz Belgorod | Moscow Time | -01:00 |
| Grudziądz Kosti | Central Africa Time | 00:00 |
| Grudziądz Taihecun | China Time | -06:00 |
| Grudziądz Doha | Arabian Time | -01:00 |
| Grudziądz Turmero | Venezuela Time | 06:00 |
| Grudziądz Tláhuac | Central Time | 07:00 |
| Grudziądz Cuernavaca | Central Time | 07:00 |
| Grudziądz Kurgan | Yekaterinburg Time | -03:00 |
| Grudziądz Rangpur | Bangladesh Time | -04:00 |
| Grudziądz Bhimbar | Pakistan Time | -03:00 |
| Grudziądz Vitsyebsk | Moscow Time | -01:00 |
| Grudziądz Soledad | Colombia Time | 07:00 |
| Grudziądz Shiqi | China Time | -06:00 |
| Grudziądz Piracicaba | Brasilia Time | 05:00 |
| Grudziądz Zürich | Central European Time | 00:00 |
| Grudziądz Kūkatpalli | India Standard Time | -03:30 |
| Grudziądz Jhang Sadar | Pakistan Time | -03:00 |
| Grudziądz Arusha | East Africa Time | -01:00 |
| Grudziądz Ambattur | India Standard Time | -03:30 |
| Grudziądz Koriyama | Japan Time | -07:00 |
| Grudziądz Plovdiv | Eastern European Time | -01:00 |
| Grudziądz Chitungwiza | Central Africa Time | 00:00 |
| Grudziądz Kashiwa | Japan Time | -07:00 |
| Grudziądz Latakia | Eastern European Time | -01:00 |
| Grudziądz Aksu | China Time | -06:00 |
| Grudziądz Irapuato | Central Time | 07:00 |
| Grudziądz Tokorozawa | Japan Time | -07:00 |