| Ottawa Goiânia | Brasilia Time | -02:00 |
| Ottawa Guarulhos | Brasilia Time | -02:00 |
| Ottawa Prague | Central European Time | -06:00 |
| Ottawa Varanasi | India Standard Time | -10:30 |
| Ottawa Copenhagen | Central European Time | -06:00 |
| Ottawa Sofia | Eastern European Time | -07:00 |
| Ottawa Tripoli | Eastern European Time | -07:00 |
| Ottawa Port Harcourt | West Africa Time | -06:00 |
| Ottawa Hiroshima | Japan Time | -14:00 |
| Ottawa Lijiang | China Time | -13:00 |
| Ottawa Dubai | Gulf Standard Time | -09:00 |
| Ottawa Samara | Samara Time | -09:00 |
| Ottawa Omsk | Omsk Time | -11:00 |
| Ottawa Benin City | West Africa Time | -06:00 |
| Ottawa Monterrey | Central Time | 01:00 |
| Ottawa Malingao | Philippine Time | -13:00 |
| Ottawa Baku | Azerbaijan Time | -09:00 |
| Ottawa Leon | Central Time | 01:00 |
| Ottawa Maiduguri | West Africa Time | -06:00 |
| Ottawa Kazan | Moscow Time | -08:00 |
| Ottawa Yerevan | Armenia Time | -09:00 |
| Ottawa Amritsar | India Standard Time | -10:30 |
| Ottawa Ouagadougou | Greenwich Mean Time | -05:00 |
| Ottawa Yono | Japan Time | -14:00 |
| Ottawa Rostov-on-Don | Moscow Time | -08:00 |
| Ottawa Allahabad | India Standard Time | -10:30 |
| Ottawa Goyang-si | Korean Time | -14:00 |
| Ottawa Gaziantep | Turkey Time | -08:00 |
| Ottawa Visakhapatnam | India Standard Time | -10:30 |
| Ottawa Sendai | Japan Time | -14:00 |
| Ottawa Chelyabinsk | Yekaterinburg Time | -10:00 |
| Ottawa Datong | China Time | -13:00 |
| Ottawa Tbilisi | Georgia Time | -09:00 |
| Ottawa Changshu City | China Time | -13:00 |
| Ottawa Taichung | Taipei Time | -13:00 |
| Ottawa Theni | India Standard Time | -10:30 |
| Ottawa Xianyang | China Time | -13:00 |
| Ottawa Ufa | Yekaterinburg Time | -10:00 |
| Ottawa Dnepropetrovsk | Eastern European Time | -07:00 |
| Ottawa Seongnam-si | Korean Time | -14:00 |
| Ottawa Campinas | Brasilia Time | -02:00 |
| Ottawa Jabalpur | India Standard Time | -10:30 |
| Ottawa Howrah | India Standard Time | -10:30 |
| Ottawa Huainan | China Time | -13:00 |
| Ottawa San Jose | Pacific Time | 03:00 |
| Ottawa Donetsk | Eastern European Time | -07:00 |
| Ottawa Dublin | Ireland Time | -05:00 |
| Ottawa Calgary | Mountain Time | 02:00 |
| Ottawa Brussels | Central European Time | -06:00 |
| Ottawa Aurangabad | India Standard Time | -10:30 |