| Oeiras Abisko | Central European Time | -01:00 |
| Oeiras Abingdon | Eastern Time | 05:00 |
| Oeiras Abington | Eastern Time | 05:00 |
| Oeiras Aberdeen | Central Time | 06:00 |
| Oeiras Abeibara | Greenwich Mean Time | 00:00 |
| Oeiras Abbotsford | Eastern Australia Time | -11:00 |
| Oeiras Almuwaylih | Arabian Time | -03:00 |
| Oeiras Alphington | Eastern Australia Time | -11:00 |
| Oeiras Altavilla Vicentina | Central European Time | -01:00 |
| Oeiras Altdorf | Central European Time | -01:00 |
| Oeiras Allenspark | Mountain Time | 07:00 |
| Oeiras Allostock | United Kingdom Time | 00:00 |
| Oeiras Allenby Gardens | Central Australia Time | -10:30 |
| Oeiras Almeley | United Kingdom Time | 00:00 |
| Oeiras Almargem do Bispo | Western European Time | 00:00 |
| Oeiras Almancil | Western European Time | 00:00 |
| Oeiras Albisola Superiore | Central European Time | -01:00 |
| Oeiras Albert Park | Eastern Australia Time | -11:00 |
| Oeiras Alba Adriatica | Central European Time | -01:00 |
| Oeiras Alaró | Central European Time | -01:00 |
| Oeiras Alavandipuram | India Standard Time | -05:30 |
| Oeiras Alaska | Atlantic Time | 04:00 |
| Oeiras Alaska | Central Time | 06:00 |
| Oeiras Alaska | Eastern Time | 05:00 |
| Oeiras Alata | Central European Time | -01:00 |
| Oeiras Alappuzha | India Standard Time | -05:30 |
| Oeiras Alamarathupatti | India Standard Time | -05:30 |
| Oeiras Ajijic | Central Time | 06:00 |
| Oeiras Al-Qayrawan | Central European Time | -01:00 |
| Oeiras Alachua | Eastern Time | 05:00 |
| Oeiras Alagón | Central European Time | -01:00 |
| Oeiras Aigle | Central European Time | -01:00 |
| Oeiras Aiea | Hawaii-Aleutian Time | 10:00 |
| Oeiras Agurain | Central European Time | -01:00 |
| Oeiras Aitkenvale | Eastern Australia Time | -10:00 |
| Oeiras Airport West | Eastern Australia Time | -11:00 |
| Oeiras Air Itam | Malaysia Time | -08:00 |
| Oeiras Ajanta | India Standard Time | -05:30 |