| Portsmouth Balmain | Eastern Australia Time | -09:00 |
| Portsmouth Saint James | Western Australia Time | -07:00 |
| Portsmouth Ballydehob | Ireland Time | 00:00 |
| Portsmouth Saint James City | Eastern Time | 05:00 |
| Portsmouth Ballsbridge | Ireland Time | 00:00 |
| Portsmouth Saint-Jean-Cap-Ferrat | Central European Time | -01:00 |
| Portsmouth Ballston Spa | Eastern Time | 05:00 |
| Portsmouth Saint Johns | Eastern Time | 05:00 |
| Portsmouth Ballina | Eastern Australia Time | -09:00 |
| Portsmouth Saint-Joseph-de-Beauce | Eastern Time | 05:00 |
| Portsmouth Balsièges | Central European Time | -01:00 |
| Portsmouth Saint-Joseph-du-Lac | Eastern Time | 05:00 |
| Portsmouth Balwyn | Eastern Australia Time | -09:00 |
| Portsmouth Saint John | Central Time | 06:00 |
| Portsmouth Ballarat Central | Eastern Australia Time | -09:00 |
| Portsmouth Regueb | Central European Time | 00:00 |
| Portsmouth Arpora | India Standard Time | -04:30 |
| Portsmouth Rehoboth Beach | Eastern Time | 05:00 |
| Portsmouth Arossim | India Standard Time | -04:30 |
| Portsmouth Rehovot | Israel Time | -02:00 |
| Portsmouth Armstrong | Pacific Time | 08:00 |
| Portsmouth Reichenau im Mühlkreis | Central European Time | -01:00 |
| Portsmouth Arncliffe | Eastern Australia Time | -09:00 |
| Portsmouth Regina Beach | Central Time | 07:00 |
| Portsmouth Arnedo | Central European Time | -01:00 |
| Portsmouth Redován | Central European Time | -01:00 |
| Portsmouth Redruth | United Kingdom Time | 00:00 |
| Portsmouth Regencós | Central European Time | -01:00 |
| Portsmouth Regensdorf | Central European Time | -01:00 |
| Portsmouth Reeuwijk | Central European Time | -01:00 |
| Portsmouth Reedsport | Pacific Time | 08:00 |
| Portsmouth Reidsville | Eastern Time | 05:00 |
| Portsmouth Reifferscheid | Central European Time | -01:00 |
| Portsmouth Remiremont | Central European Time | -01:00 |
| Portsmouth Remlingen | Central European Time | -01:00 |
| Portsmouth Renwick | New Zealand Time | -11:00 |
| Portsmouth Rende | Central European Time | -01:00 |
| Portsmouth Rengit | Malaysia Time | -07:00 |