| Sirajganj Bithani Gaon | India Standard Time | 00:30 |
| Sirajganj Ikšķile | Eastern European Time | 03:00 |
| Sirajganj Bissone | Central European Time | 04:00 |
| Sirajganj Illueca | Central European Time | 04:00 |
| Sirajganj Bass Hill | Eastern Australia Time | -04:00 |
| Sirajganj Imboden | Central Time | 11:00 |
| Sirajganj Bastida | Central European Time | 04:00 |
| Sirajganj Immenstadt | Central European Time | 04:00 |
| Sirajganj Bastrop | Central Time | 11:00 |
| Sirajganj Kalaburagi | India Standard Time | 00:30 |
| Sirajganj Bathinda | India Standard Time | 00:30 |
| Sirajganj Kakkanad | India Standard Time | 00:30 |
| Sirajganj Bath | Eastern Time | 10:00 |
| Sirajganj Kajang | Malaysia Time | -02:00 |
| Sirajganj Batang Tiga | Malaysia Time | -02:00 |
| Sirajganj Kajang | Malaysia Time | -02:00 |
| Sirajganj Batam | Western Indonesia Time | -01:00 |
| Sirajganj Batu Caves | Malaysia Time | -02:00 |
| Sirajganj Batu Feringghi | Malaysia Time | -02:00 |
| Sirajganj Batu Maung | Malaysia Time | -02:00 |
| Sirajganj Bathurst | Atlantic Time | 09:00 |
| Sirajganj Bätterkinden | Central European Time | 04:00 |
| Sirajganj Battle | United Kingdom Time | 05:00 |
| Sirajganj Battery Point | Eastern Australia Time | -04:00 |
| Sirajganj Bauru | Brasilia Time | 09:00 |
| Sirajganj Baxter | Central Time | 11:00 |
| Sirajganj Bioggio | Central European Time | 04:00 |
| Sirajganj Biougra | Western European Time | 05:00 |
| Sirajganj Bir Ali Ben Khlifa | Central European Time | 05:00 |
| Sirajganj Birch Run | Eastern Time | 10:00 |
| Sirajganj Bir Tam Tam | Western European Time | 05:00 |
| Sirajganj Birkdale | Eastern Australia Time | -04:00 |
| Sirajganj Birkenau | Central European Time | 04:00 |
| Sirajganj Birkenfeld | Central European Time | 04:00 |
| Sirajganj Bisbee | Mountain Time | 13:00 |
| Sirajganj Birmingham | United Kingdom Time | 05:00 |
| Sirajganj Birmingham | United Kingdom Time | 05:00 |
| Sirajganj Biroda | India Standard Time | 00:30 |