| Casselman Ypres | Central European Time | -06:00 |
| Casselman Al Mudayq | Gulf Standard Time | -08:00 |
| Casselman Rende | Central European Time | -06:00 |
| Casselman Al Jaradiyah | Arabian Time | -07:00 |
| Casselman Al-Mamurah | Central European Time | -05:00 |
| Casselman Al Jaghbub | Eastern European Time | -06:00 |
| Casselman Al Hofuf | Arabian Time | -07:00 |
| Casselman Alphington | Eastern Australia Time | -14:00 |
| Casselman Almuwaylih | Arabian Time | -07:00 |
| Casselman Almeley | United Kingdom Time | -05:00 |
| Casselman Almargem do Bispo | Western European Time | -05:00 |
| Casselman Altishofen | Central European Time | -06:00 |
| Casselman Altona | Eastern Australia Time | -14:00 |
| Casselman Altona North | Eastern Australia Time | -14:00 |
| Casselman Altstätten | Central European Time | -06:00 |
| Casselman Altdorf | Central European Time | -06:00 |
| Casselman Altentreptow | Central European Time | -06:00 |
| Casselman Altavilla Vicentina | Central European Time | -06:00 |
| Casselman Ambala Cantt | India Standard Time | -09:30 |
| Casselman Ambler | Eastern Time | 00:00 |
| Casselman Ambleside | United Kingdom Time | -05:00 |
| Casselman Alverca do Ribatejo | Western European Time | -05:00 |
| Casselman Alvarado | Central Time | 01:00 |
| Casselman Alvor | Western European Time | -05:00 |
| Casselman Alzenau | Central European Time | -06:00 |
| Casselman Amarante | Western European Time | -05:00 |
| Casselman Amaravati | India Standard Time | -09:30 |
| Casselman Amakusa | Japan Time | -13:00 |
| Casselman Alconaba | Central European Time | -06:00 |
| Casselman Alexander Heights | Western Australia Time | -12:00 |
| Casselman Alexandria Bay | Eastern Time | 00:00 |
| Casselman Alenquer | Western European Time | -05:00 |
| Casselman Albisola Superiore | Central European Time | -06:00 |
| Casselman Albert Park | Eastern Australia Time | -14:00 |
| Casselman Alcanar | Central European Time | -06:00 |
| Casselman Alcochete | Western European Time | -05:00 |
| Casselman Almancil | Western European Time | -05:00 |
| Casselman Allostock | United Kingdom Time | -05:00 |
| Casselman Allenspark | Mountain Time | 02:00 |
| Casselman Allenby Gardens | Central Australia Time | -13:30 |
| Casselman Alfonso Lista | Philippine Time | -12:00 |
| Casselman Alfornelos | Western European Time | -05:00 |
| Casselman Algiers | South Africa Standard Time | -06:00 |
| Casselman Algoma | Central Time | 01:00 |
| Casselman Alger Centre | Central European Time | -05:00 |
| Casselman Algerias | Colombia Time | 01:00 |
| Casselman Algermissen | Central European Time | -06:00 |
| Casselman Algood | Central Time | 01:00 |
| Casselman Alhos Vedros | Western European Time | -05:00 |
| Casselman Alhandra | Western European Time | -05:00 |