| Port Harcourt Djougou | West Africa Time | 00:00 |
| Port Harcourt Sylhet | Bangladesh Time | -05:00 |
| Port Harcourt Garland | Central Time | 06:00 |
| Port Harcourt Ratlam | India Standard Time | -04:30 |
| Port Harcourt Scottsdale | Mountain Time | 08:00 |
| Port Harcourt Košice | Central European Time | -01:00 |
| Port Harcourt Chernivtsi | Eastern European Time | -02:00 |
| Port Harcourt Dera Ghāzi Khān | Pakistan Time | -04:00 |
| Port Harcourt Yuci | China Time | -07:00 |
| Port Harcourt Sant Martí | Central European Time | -01:00 |
| Port Harcourt Sahiwal | Pakistan Time | -04:00 |
| Port Harcourt Ternopil | Eastern European Time | -02:00 |
| Port Harcourt Vitoria-Gasteiz | Central European Time | -01:00 |
| Port Harcourt Yakutsk | Yakutsk Time | -08:00 |
| Port Harcourt Chesapeake | Eastern Time | 05:00 |
| Port Harcourt Caruaru | Brasilia Time | 04:00 |
| Port Harcourt Qina | Eastern European Time | -01:00 |
| Port Harcourt Boa Vista | Amazon Time | 05:00 |
| Port Harcourt Kediri | Western Indonesia Time | -06:00 |
| Port Harcourt Georgetown | Guyana Time | 05:00 |
| Port Harcourt Ramagundam | India Standard Time | -04:30 |
| Port Harcourt Kismayo | East Africa Time | -02:00 |
| Port Harcourt Ibb | Arabian Time | -02:00 |
| Port Harcourt Türkmenabat | Turkmenistan Time | -04:00 |
| Port Harcourt North Las Vegas | Pacific Time | 08:00 |
| Port Harcourt Granada | Central European Time | -01:00 |
| Port Harcourt Nizhnekamsk | Moscow Time | -02:00 |
| Port Harcourt Porto Novo | West Africa Time | 00:00 |
| Port Harcourt Halle (Saale) | Central European Time | -01:00 |
| Port Harcourt Kitchener | Eastern Time | 05:00 |
| Port Harcourt Centurion | South Africa Standard Time | -01:00 |
| Port Harcourt Tagum City | Philippine Time | -07:00 |
| Port Harcourt Hamburg-Mitte | Central European Time | -01:00 |
| Port Harcourt Dzerzhinsk | Moscow Time | -02:00 |
| Port Harcourt Takoradi | Greenwich Mean Time | 01:00 |
| Port Harcourt Kiel | Central European Time | -01:00 |
| Port Harcourt Linfen | China Time | -07:00 |
| Port Harcourt Fremont | Pacific Time | 08:00 |
| Port Harcourt Bordeaux | Central European Time | -01:00 |
| Port Harcourt Sri Ganganagar | India Standard Time | -04:30 |
| Port Harcourt Chigasaki | Japan Time | -08:00 |
| Port Harcourt Ghent | Central European Time | -01:00 |
| Port Harcourt Taytay | Philippine Time | -07:00 |
| Port Harcourt Soka | Japan Time | -08:00 |
| Port Harcourt Ngaoundere | West Africa Time | 00:00 |
| Port Harcourt Suncheon-si | Korean Time | -08:00 |
| Port Harcourt Coatzacoalcos | Central Time | 06:00 |
| Port Harcourt Syktyvkar | Moscow Time | -02:00 |
| Port Harcourt Elche | Central European Time | -01:00 |
| Port Harcourt Merca | East Africa Time | -02:00 |