| Sudbury Anzola dell'Emilia | Central European Time | -06:00 |
| Sudbury Ao Nang | Indochina Time | -12:00 |
| Sudbury Aoba Ward | Japan Time | -14:00 |
| Sudbury Aoi Ward | Japan Time | -14:00 |
| Sudbury Assomada | Cape Verde Time | -04:00 |
| Sudbury Assago | Central European Time | -06:00 |
| Sudbury Asolo | Central European Time | -06:00 |
| Sudbury Atatürk Mahallesi | Turkey Time | -08:00 |
| Sudbury Athol | New Zealand Time | -18:00 |
| Sudbury Athy | Ireland Time | -05:00 |
| Sudbury Asangaon | India Standard Time | -10:30 |
| Sudbury Ascot Vale | Eastern Australia Time | -16:00 |
| Sudbury Ascoli Satriano | Central European Time | -06:00 |
| Sudbury Ascona | Central European Time | -06:00 |
| Sudbury Asendorf | Central European Time | -06:00 |
| Sudbury Ashbourne | United Kingdom Time | -05:00 |
| Sudbury Ashwood | Eastern Australia Time | -16:00 |
| Sudbury Ashprington | United Kingdom Time | -05:00 |
| Sudbury Arundel | Eastern Time | 00:00 |
| Sudbury Arvidsjaur | Central European Time | -06:00 |
| Sudbury Arruda dos Vinhos | Western European Time | -05:00 |
| Sudbury Artà | Central European Time | -06:00 |
| Sudbury Arossim | India Standard Time | -10:30 |
| Sudbury Arpora | India Standard Time | -10:30 |
| Sudbury Ardross | Western Australia Time | -13:00 |
| Sudbury Ardsley | Eastern Time | 00:00 |
| Sudbury Åre | Central European Time | -06:00 |
| Sudbury Arcugnano | Central European Time | -06:00 |
| Sudbury Arden | Eastern Time | 00:00 |
| Sudbury Ariana | Central European Time | -06:00 |
| Sudbury Argenbühl | Central European Time | -06:00 |
| Sudbury Argent-sur-Sauldre | Central European Time | -06:00 |
| Sudbury Arklow | Ireland Time | -05:00 |
| Sudbury Arkula | India Standard Time | -10:30 |
| Sudbury Arlesheim | Central European Time | -06:00 |
| Sudbury Armstrong | Pacific Time | 03:00 |
| Sudbury Arncliffe | Eastern Australia Time | -16:00 |
| Sudbury Arnedo | Central European Time | -06:00 |