| Ottawa Victoria Park | Western Australia Time | -12:00 |
| Ottawa Bayerisch Eisenstein | Central European Time | -06:00 |
| Ottawa Wilbraham | Eastern Time | 00:00 |
| Ottawa Bayan Lepas | Malaysia Time | -12:00 |
| Ottawa Wildau | Central European Time | -06:00 |
| Ottawa Bayan Lepas | Malaysia Time | -12:00 |
| Ottawa Wilder | Eastern Time | 00:00 |
| Ottawa Cedar Springs | Eastern Time | 00:00 |
| Ottawa Wilderswil | Central European Time | -06:00 |
| Ottawa Ceelbuur | East Africa Time | -07:00 |
| Ottawa Wickham | United Kingdom Time | -05:00 |
| Ottawa Butler | Eastern Time | 00:00 |
| Ottawa Wickham Bishops | United Kingdom Time | -05:00 |
| Ottawa Buttlar | Central European Time | -06:00 |
| Ottawa Wicklow | Ireland Time | -05:00 |
| Ottawa Buttonwillow | Pacific Time | 03:00 |
| Ottawa Widnau | Central European Time | -06:00 |
| Ottawa Butamwa | Central Africa Time | -06:00 |
| Ottawa Whitney | Central Time | 01:00 |
| Ottawa Buscate | Central European Time | -06:00 |
| Ottawa Victoria Point | Eastern Australia Time | -14:00 |
| Ottawa Burtonsville | Eastern Time | 00:00 |
| Ottawa Zollikerberg | Central European Time | -06:00 |
| Ottawa Burwood | Eastern Australia Time | -14:00 |
| Ottawa Zofingen | Central European Time | -06:00 |
| Ottawa Burwood East | Eastern Australia Time | -14:00 |
| Ottawa Burnside | Central Australia Time | -13:30 |
| Ottawa Burleigh Heads | Eastern Australia Time | -14:00 |
| Ottawa Burleigh Heads | Eastern Australia Time | -14:00 |
| Ottawa Burkburnett | Central Time | 01:00 |
| Ottawa Burgdorf | Central European Time | -06:00 |
| Ottawa Boerne | Central Time | 01:00 |
| Ottawa Boelenslaan | Central European Time | -06:00 |
| Ottawa Bocas del Toro Province | Eastern Time | 01:00 |
| Ottawa Bochum | Central European Time | -06:00 |
| Ottawa Boca del Río | Central Time | 01:00 |
| Ottawa Boaz | Central Time | 01:00 |
| Ottawa Boambee | Eastern Australia Time | -14:00 |