| Portalegre Byford | Western Australia Time | -08:00 |
| Portalegre Bundanoon | Eastern Australia Time | -11:00 |
| Portalegre Cabazon | Pacific Time | 08:00 |
| Portalegre Bukit Mertajam | Malaysia Time | -08:00 |
| Portalegre Cabarete | Atlantic Time | 04:00 |
| Portalegre Bukit Beruang | Malaysia Time | -08:00 |
| Portalegre Bukit Kayu Hitam | Malaysia Time | -08:00 |
| Portalegre Buira | Central European Time | -01:00 |
| Portalegre Bassecourt | Central European Time | -01:00 |
| Portalegre Bassendean | Western Australia Time | -08:00 |
| Portalegre Bass Hill | Eastern Australia Time | -11:00 |
| Portalegre Bastrop | Central Time | 06:00 |
| Portalegre Bastida | Central European Time | -01:00 |
| Portalegre Batang Tiga | Malaysia Time | -08:00 |
| Portalegre Batam | Western Indonesia Time | -07:00 |
| Portalegre Bathinda | India Standard Time | -05:30 |
| Portalegre Bath | Eastern Time | 05:00 |
| Portalegre Bathurst | Atlantic Time | 04:00 |
| Portalegre Batu Caves | Malaysia Time | -08:00 |
| Portalegre Batu Feringghi | Malaysia Time | -08:00 |
| Portalegre Batu Maung | Malaysia Time | -08:00 |
| Portalegre Bätterkinden | Central European Time | -01:00 |
| Portalegre Battle | United Kingdom Time | 00:00 |
| Portalegre Battery Point | Eastern Australia Time | -11:00 |
| Portalegre Bauru | Brasilia Time | 03:00 |
| Portalegre Baxter | Central Time | 06:00 |
| Portalegre Bioggio | Central European Time | -01:00 |
| Portalegre Biougra | Western European Time | -01:00 |
| Portalegre Bir Ali Ben Khlifa | Central European Time | -01:00 |
| Portalegre Birch Run | Eastern Time | 05:00 |
| Portalegre Bir Tam Tam | Western European Time | -01:00 |
| Portalegre Bisbee | Mountain Time | 07:00 |
| Portalegre Biroda | India Standard Time | -05:30 |
| Portalegre Birmingham | United Kingdom Time | 00:00 |
| Portalegre Birmingham | United Kingdom Time | 00:00 |
| Portalegre Birkdale | Eastern Australia Time | -10:00 |
| Portalegre Birkenau | Central European Time | -01:00 |
| Portalegre Birkenfeld | Central European Time | -01:00 |