| Preston Batu Feringghi | Malaysia Time | -12:00 |
| Preston Batu Maung | Malaysia Time | -12:00 |
| Preston Baxter | Central Time | 01:00 |
| Preston Bauru | Brasilia Time | -01:00 |
| Preston Addison | Central Time | 01:00 |
| Preston Adel | Eastern Time | 00:00 |
| Preston Adelboden | Central European Time | -06:00 |
| Preston Acton | Eastern Time | 00:00 |
| Preston Acacia Gardens | Eastern Australia Time | -14:00 |
| Preston Acapulco | Central Time | 01:00 |
| Preston Acoi Village | India Standard Time | -09:30 |
| Preston Adoor | India Standard Time | -09:30 |
| Preston Adpar | United Kingdom Time | -05:00 |
| Preston Al-Qayrawan | Central European Time | -05:00 |
| Preston Alachua | Eastern Time | 00:00 |
| Preston Alagón | Central European Time | -06:00 |
| Preston Alamarathupatti | India Standard Time | -09:30 |
| Preston Arad | Israel Time | -07:00 |
| Preston Arakawa | Japan Time | -13:00 |
| Preston Arahal | Central European Time | -06:00 |
| Preston Aramengo | Central European Time | -06:00 |
| Preston Arco | Central European Time | -06:00 |
| Preston Arcachon | Central European Time | -06:00 |
| Preston Arazane | Western European Time | -05:00 |
| Preston Apt | Central European Time | -06:00 |
| Preston Aptos | Pacific Time | 03:00 |
| Preston Arab | Central Time | 01:00 |
| Preston Arabico | Bolivia Time | 00:00 |
| Preston Albert Park | Eastern Australia Time | -14:00 |
| Preston Albisola Superiore | Central European Time | -06:00 |
| Preston Alaró | Central European Time | -06:00 |
| Preston Alappuzha | India Standard Time | -09:30 |
| Preston Alba Adriatica | Central European Time | -06:00 |
| Preston Alavandipuram | India Standard Time | -09:30 |
| Preston Alaska | Atlantic Time | -01:00 |
| Preston Alaska | Central Time | 01:00 |
| Preston Alaska | Eastern Time | 00:00 |
| Preston Alata | Central European Time | -06:00 |