| Sirmione Bailrigg | United Kingdom Time | 01:00 |
| Sirmione Bainbridge | Eastern Time | 06:00 |
| Sirmione Baio Dora | Central European Time | 00:00 |
| Sirmione Bakewell | United Kingdom Time | 01:00 |
| Sirmione Balakong | Malaysia Time | -06:00 |
| Sirmione Balaclava | Eastern Australia Time | -08:00 |
| Sirmione Baladare | India Standard Time | -03:30 |
| Sirmione Balatonfenyves | Central European Time | 00:00 |
| Sirmione Balat | Eastern European Time | 00:00 |
| Sirmione Bahrain | Pakistan Time | -03:00 |
| Sirmione Bahrs Scrub | Eastern Australia Time | -08:00 |
| Sirmione Baichanalli | India Standard Time | -03:30 |
| Sirmione Baidani | India Standard Time | -03:30 |
| Sirmione Baie-D'Urfe | Eastern Time | 06:00 |
| Sirmione Arossim | India Standard Time | -03:30 |
| Sirmione Arpora | India Standard Time | -03:30 |
| Sirmione Arklow | Ireland Time | 01:00 |
| Sirmione Arkula | India Standard Time | -03:30 |
| Sirmione Arlesheim | Central European Time | 00:00 |
| Sirmione Armstrong | Pacific Time | 09:00 |
| Sirmione Arncliffe | Eastern Australia Time | -08:00 |
| Sirmione Arnedo | Central European Time | 00:00 |
| Sirmione Al Aaroui | Western European Time | 01:00 |
| Sirmione Akköy | Turkey Time | -01:00 |
| Sirmione Akrotiri | Eastern European Time | -01:00 |
| Sirmione Al Hofuf | Arabian Time | -01:00 |
| Sirmione Ardross | Western Australia Time | -06:00 |
| Sirmione Ardsley | Eastern Time | 06:00 |
| Sirmione Åre | Central European Time | 00:00 |
| Sirmione Arden | Eastern Time | 06:00 |
| Sirmione Arcugnano | Central European Time | 00:00 |
| Sirmione Al Mudayq | Gulf Standard Time | -02:00 |
| Sirmione Ariana | Central European Time | 01:00 |
| Sirmione Argenbühl | Central European Time | 00:00 |
| Sirmione Argent-sur-Sauldre | Central European Time | 00:00 |
| Sirmione Al Jaradiyah | Arabian Time | -01:00 |
| Sirmione Al Jaghbub | Eastern European Time | 00:00 |
| Sirmione Al-Mamurah | Central European Time | 01:00 |