| Port Harcourt Hanover | Eastern Time | 05:00 |
| Port Harcourt Hanwood | Eastern Australia Time | -09:00 |
| Port Harcourt Happy Valley | Pacific Time | 08:00 |
| Port Harcourt Harburg | Central European Time | -01:00 |
| Port Harcourt Handsworth Wood | United Kingdom Time | 00:00 |
| Port Harcourt Hang Dong | Indochina Time | -06:00 |
| Port Harcourt Handforth | United Kingdom Time | 00:00 |
| Port Harcourt Hampton | Eastern Australia Time | -09:00 |
| Port Harcourt Hanamkonda | India Standard Time | -04:30 |
| Port Harcourt Hanau | Central European Time | -01:00 |
| Port Harcourt Hammonton | Eastern Time | 05:00 |
| Port Harcourt Hampi | India Standard Time | -04:30 |
| Port Harcourt Hammerfest | Central European Time | -01:00 |
| Port Harcourt Hammersbach | Central European Time | -01:00 |
| Port Harcourt Jeleeb Al-Shuyoukh | Arabian Time | -02:00 |
| Port Harcourt Jejuri | India Standard Time | -04:30 |
| Port Harcourt Jefferson | Eastern Time | 05:00 |
| Port Harcourt Jayamkondan | India Standard Time | -04:30 |
| Port Harcourt Jensen Beach | Eastern Time | 05:00 |
| Port Harcourt Jerez | Central European Time | -01:00 |
| Port Harcourt Jenjarom | Malaysia Time | -07:00 |
| Port Harcourt Jenkintown | Eastern Time | 05:00 |
| Port Harcourt Jelutong | Malaysia Time | -07:00 |
| Port Harcourt Jerome | Mountain Time | 08:00 |
| Port Harcourt Jersey Shore | Eastern Time | 05:00 |
| Port Harcourt Jericho | Eastern Time | 05:00 |
| Port Harcourt Jesus Maria | Peru Time | 06:00 |
| Port Harcourt Jessup | Eastern Time | 05:00 |
| Port Harcourt Jasper | Central Time | 06:00 |
| Port Harcourt Jasin | Malaysia Time | -07:00 |
| Port Harcourt Hunter River | Atlantic Time | 04:00 |
| Port Harcourt Huntingdale | Western Australia Time | -07:00 |
| Port Harcourt Huttons Ambo | United Kingdom Time | 00:00 |
| Port Harcourt Huskisson | Eastern Australia Time | -09:00 |
| Port Harcourt Húsavík | Greenwich Mean Time | 01:00 |
| Port Harcourt Husborne Crawley | United Kingdom Time | 00:00 |
| Port Harcourt Hurstville | Eastern Australia Time | -09:00 |
| Port Harcourt Hurricane | Mountain Time | 07:00 |