| Portsmouth Somwarpet | India Standard Time | -04:30 |
| Portsmouth Yemmiganur | India Standard Time | -04:30 |
| Portsmouth Elora | Eastern Time | 05:00 |
| Portsmouth Balsièges | Central European Time | -01:00 |
| Portsmouth Somerton | Mountain Time | 08:00 |
| Portsmouth Órgiva | Central European Time | -01:00 |
| Portsmouth Elsternwick | Eastern Australia Time | -09:00 |
| Portsmouth Yasmine Hammamet | Central European Time | 00:00 |
| Portsmouth Sommières | Central European Time | -01:00 |
| Portsmouth Pettendorf | Central European Time | -01:00 |
| Portsmouth Elstree | United Kingdom Time | 00:00 |
| Portsmouth Yarine | Eastern European Time | -02:00 |
| Portsmouth Somogyvámos | Central European Time | -01:00 |
| Portsmouth Orangeburg | Eastern Time | 05:00 |
| Portsmouth Sonipat | India Standard Time | -04:30 |
| Portsmouth Yarra Junction | Eastern Australia Time | -09:00 |
| Portsmouth Sheppard Air Force Base | Central Time | 06:00 |
| Portsmouth Orange Park | Eastern Time | 05:00 |
| Portsmouth Somers Point | Eastern Time | 05:00 |
| Portsmouth Yarralumla | Eastern Australia Time | -09:00 |
| Portsmouth Somerset | Eastern Time | 05:00 |
| Portsmouth Opfikon | Central European Time | -01:00 |
| Portsmouth Shenton Park | Western Australia Time | -07:00 |
| Portsmouth Yarraville | Eastern Australia Time | -09:00 |
| Portsmouth Shelby charter Township | Eastern Time | 05:00 |
| Portsmouth Norway | Eastern Time | 05:00 |
| Portsmouth Shenandoah | Central Time | 06:00 |
| Portsmouth Yanbian | China Time | -07:00 |
| Portsmouth Shelburne Falls | Eastern Time | 05:00 |
| Portsmouth Norwood | Central Australia Time | -08:30 |
| Portsmouth Shekef | Israel Time | -02:00 |
| Portsmouth Yandina | Eastern Australia Time | -09:00 |
| Portsmouth Sheffield | Eastern Australia Time | -09:00 |
| Portsmouth Norwood | Eastern Time | 05:00 |
| Portsmouth Sheffield | United Kingdom Time | 00:00 |
| Portsmouth Northwood | Eastern Time | 05:00 |
| Portsmouth West Hindmarsh | Central Australia Time | -08:30 |
| Portsmouth Northwood | United Kingdom Time | 00:00 |
| Portsmouth West Lakes | Central Australia Time | -08:30 |
| Portsmouth Northvale | Eastern Time | 05:00 |
| Portsmouth West Kempsey | Eastern Australia Time | -09:00 |
| Portsmouth North Truro | Eastern Time | 05:00 |
| Portsmouth West Kirby | United Kingdom Time | 00:00 |
| Portsmouth North Wales | Eastern Time | 05:00 |
| Portsmouth West Monroe | Central Time | 06:00 |
| Portsmouth North Yarmouth | Eastern Time | 05:00 |
| Portsmouth West Nyack | Eastern Time | 05:00 |
| Portsmouth Northbridge | Eastern Australia Time | -09:00 |
| Portsmouth West Milwaukee | Central Time | 06:00 |
| Portsmouth Onești | Eastern European Time | -02:00 |