| Ruka Aarhus | Central European Time | 01:00 |
| Ruka Aarppookkara | India Standard Time | -03:30 |
| Ruka Abanilla | Central European Time | 01:00 |
| Ruka Aberlady | United Kingdom Time | 02:00 |
| Ruka Abisko | Central European Time | 01:00 |
| Ruka Abingdon | Eastern Time | 07:00 |
| Ruka Abington | Eastern Time | 07:00 |
| Ruka Aberdeen | Central Time | 08:00 |
| Ruka Abeibara | Greenwich Mean Time | 02:00 |
| Ruka Abbotsford | Eastern Australia Time | -09:00 |
| Ruka Ajijic | Central Time | 08:00 |
| Ruka Akköy | Turkey Time | -01:00 |
| Ruka Al Aaroui | Western European Time | 01:00 |
| Ruka Akrotiri | Eastern European Time | 00:00 |
| Ruka Aigle | Central European Time | 01:00 |
| Ruka Aiea | Hawaii-Aleutian Time | 12:00 |
| Ruka Agurain | Central European Time | 01:00 |
| Ruka Aitkenvale | Eastern Australia Time | -08:00 |
| Ruka Airport West | Eastern Australia Time | -09:00 |
| Ruka Air Itam | Malaysia Time | -06:00 |
| Ruka Ajanta | India Standard Time | -03:30 |
| Ruka Alba Adriatica | Central European Time | 01:00 |
| Ruka Alavandipuram | India Standard Time | -03:30 |
| Ruka Alaró | Central European Time | 01:00 |
| Ruka Alaska | Atlantic Time | 06:00 |
| Ruka Alaska | Central Time | 08:00 |
| Ruka Alaska | Eastern Time | 07:00 |
| Ruka Alata | Central European Time | 01:00 |
| Ruka Alappuzha | India Standard Time | -03:30 |
| Ruka Alamarathupatti | India Standard Time | -03:30 |
| Ruka Alagón | Central European Time | 01:00 |
| Ruka Alachua | Eastern Time | 07:00 |
| Ruka Al-Qayrawan | Central European Time | 01:00 |
| Ruka Al Mudayq | Gulf Standard Time | -02:00 |
| Ruka Al Jaradiyah | Arabian Time | -01:00 |
| Ruka Al-Mamurah | Central European Time | 01:00 |
| Ruka Al Jaghbub | Eastern European Time | 00:00 |
| Ruka Al Hofuf | Arabian Time | -01:00 |