| Portsmouth Shimogyo Ward | Japan Time | -08:00 |
| Portsmouth Chadstone | Eastern Australia Time | -09:00 |
| Portsmouth Toppenish | Pacific Time | 08:00 |
| Portsmouth San Phi Suea | Indochina Time | -06:00 |
| Portsmouth San Agustín | Central Time | 06:00 |
| Portsmouth Neptune City | Eastern Time | 05:00 |
| Portsmouth tp. Mỹ Tho | Indochina Time | -06:00 |
| Portsmouth Donji Vinjani | Central European Time | -01:00 |
| Portsmouth Shinagawa | Japan Time | -08:00 |
| Portsmouth Chae Ramae | Indochina Time | -06:00 |
| Portsmouth Topsham | United Kingdom Time | 00:00 |
| Portsmouth Saint-Aunès | Central European Time | -01:00 |
| Portsmouth San Andrés Cholula | Central Time | 06:00 |
| Portsmouth Mülheim | Central European Time | -01:00 |
| Portsmouth tp. Nam Định | Indochina Time | -06:00 |
| Portsmouth Epping | United Kingdom Time | 00:00 |
| Portsmouth San Gimignano | Central European Time | -01:00 |
| Portsmouth Chagford | United Kingdom Time | 00:00 |
| Portsmouth Tacloban City | Philippine Time | -07:00 |
| Portsmouth San Pedro | Central Time | 07:00 |
| Portsmouth San Andrés Cholula | Central Time | 06:00 |
| Portsmouth Mülheim (Moselle) | Central European Time | -01:00 |
| Portsmouth Trebče | Central European Time | -01:00 |
| Portsmouth Époisses | Central European Time | -01:00 |
| Portsmouth San Fernando | Argentina Time | 04:00 |
| Portsmouth Chablis | Central European Time | -01:00 |
| Portsmouth Toowong | Eastern Australia Time | -09:00 |
| Portsmouth San Ramon | Central Time | 07:00 |
| Portsmouth Samoëns | Central European Time | -01:00 |
| Portsmouth Mulhouse | Central European Time | -01:00 |
| Portsmouth Tremonton | Mountain Time | 07:00 |
| Portsmouth Ephrata | Eastern Time | 05:00 |
| Portsmouth San Diego | Pacific Time | 08:00 |
| Portsmouth Calvi | Central European Time | -01:00 |
| Portsmouth Topanga | Pacific Time | 08:00 |
| Portsmouth Sanasana | Fiji Time | -11:00 |
| Portsmouth Samos | Eastern European Time | -02:00 |
| Portsmouth Neuenbürg | Central European Time | -01:00 |
| Portsmouth Trevignano | Central European Time | -01:00 |
| Portsmouth Epen | Central European Time | -01:00 |
| Portsmouth San Diego | Pacific Time | 08:00 |
| Portsmouth Calolziocorte | Central European Time | -01:00 |
| Portsmouth Swansboro | Eastern Time | 05:00 |
| Portsmouth San Vito al Tagliamento | Central European Time | -01:00 |
| Portsmouth Samouco | Western European Time | 00:00 |
| Portsmouth Neuenburg am Rhein | Central European Time | -01:00 |
| Portsmouth Trevignano Romano | Central European Time | -01:00 |
| Portsmouth Erbil | Arabian Time | -02:00 |
| Portsmouth San Diego | Venezuela Time | 05:00 |
| Portsmouth Caloocan | Philippine Time | -07:00 |