| Ottawa Victoria Park | Western Australia Time | -12:00 |
| Ottawa Laudio | Central European Time | -06:00 |
| Ottawa Varallo Pombia | Central European Time | -06:00 |
| Ottawa Little Plumstead | United Kingdom Time | -05:00 |
| Ottawa Chippewa Falls | Central Time | 01:00 |
| Ottawa Kankaanpää | Eastern European Time | -07:00 |
| Ottawa Varamballi | India Standard Time | -09:30 |
| Ottawa Zero Branco | Central European Time | -06:00 |
| Ottawa Zachary | Central Time | 01:00 |
| Ottawa Laugarvatn | Greenwich Mean Time | -04:00 |
| Ottawa Torrijos | Central European Time | -06:00 |
| Ottawa Little River | New Zealand Time | -16:00 |
| Ottawa Chipping Campden | United Kingdom Time | -05:00 |
| Ottawa Kangerlussuaq | West Greenland Time | -02:00 |
| Ottawa Toshima | Japan Time | -13:00 |
| Ottawa Zeven | Central European Time | -06:00 |
| Ottawa Zahara de los Atunes | Central European Time | -06:00 |
| Ottawa Laughlin | Pacific Time | 03:00 |
| Ottawa Totana | India Standard Time | -09:30 |
| Ottawa Little River | Eastern Time | 00:00 |
| Ottawa Chipping Norton | Eastern Australia Time | -14:00 |
| Ottawa Kangkar Pulai | Malaysia Time | -12:00 |
| Ottawa Totnes | United Kingdom Time | -05:00 |
| Ottawa Whitefish | Mountain Time | 02:00 |
| Ottawa Yvoir | Central European Time | -06:00 |
| Ottawa Laughlin Air Force Base | Central Time | 01:00 |
| Ottawa Torreglia | Central European Time | -06:00 |
| Ottawa Littlehampton | Central Australia Time | -13:30 |
| Ottawa Chinon | Central European Time | -06:00 |
| Ottawa Kanhangad | India Standard Time | -09:30 |
| Ottawa Toronto | Eastern Time | 00:00 |
| Ottawa Whitby | United Kingdom Time | -05:00 |
| Ottawa Yzeure | Central European Time | -06:00 |
| Ottawa Latham | Eastern Time | 00:00 |
| Ottawa Torquay | Eastern Australia Time | -14:00 |
| Ottawa Littlehempston | United Kingdom Time | -05:00 |
| Ottawa Caroline Springs | Eastern Australia Time | -14:00 |
| Ottawa Jahra | Arabian Time | -07:00 |
| Ottawa Torelló | Central European Time | -06:00 |
| Ottawa Whitby | Eastern Time | 00:00 |
| Ottawa Yunquera de Henares | Central European Time | -06:00 |
| Ottawa LaSalle | Eastern Time | 00:00 |
| Ottawa Torazo | Central European Time | -06:00 |
| Ottawa Little Silver | Eastern Time | 00:00 |
| Ottawa Carolina Beach | Eastern Time | 00:00 |
| Ottawa Jaigaon | India Standard Time | -09:30 |
| Ottawa Topanga | Pacific Time | 03:00 |
| Ottawa Whitchurch | United Kingdom Time | -05:00 |
| Ottawa Yuo | West Africa Time | -05:00 |
| Ottawa Latifvadi | India Standard Time | -09:30 |