| Porto Alegre Sacramento | Pacific Time | 04:00 |
| Porto Alegre Aracaju | Brasilia Time | 00:00 |
| Porto Alegre Port Sudan | Central Africa Time | -05:00 |
| Porto Alegre Santa Fe | Argentina Time | 00:00 |
| Porto Alegre San Pedro Sula | Central Time | 03:00 |
| Porto Alegre Suez | Eastern European Time | -05:00 |
| Porto Alegre Dresden | Central European Time | -05:00 |
| Porto Alegre Tomsk | Tomsk Time | -10:00 |
| Porto Alegre Masina | West Africa Time | -04:00 |
| Porto Alegre Saharanpur | India Standard Time | -08:30 |
| Porto Alegre Gulbarga | India Standard Time | -08:30 |
| Porto Alegre Bhātpāra | India Standard Time | -08:30 |
| Porto Alegre Najaf | Arabian Time | -06:00 |
| Porto Alegre Feira de Santana | Brasilia Time | 00:00 |
| Porto Alegre Shah Alam | Malaysia Time | -11:00 |
| Porto Alegre Mariupol' | Eastern European Time | -06:00 |
| Porto Alegre Himeji | Japan Time | -12:00 |
| Porto Alegre Tuxtla Gutiérrez | Central Time | 02:00 |
| Porto Alegre Gomel | Moscow Time | -06:00 |
| Porto Alegre Okene | West Africa Time | -04:00 |
| Porto Alegre Uijeongbu-si | Korean Time | -12:00 |
| Porto Alegre East London | South Africa Standard Time | -05:00 |
| Porto Alegre Yazd | Iran Time | -07:30 |
| Porto Alegre Hargeisa | East Africa Time | -06:00 |
| Porto Alegre Siālkot | Pakistan Time | -08:00 |
| Porto Alegre Kemerovo | Novokuznetsk Time | -10:00 |
| Porto Alegre Yichang | China Time | -11:00 |
| Porto Alegre Hwaseong-si | Korean Time | -12:00 |
| Porto Alegre Kansas City | Central Time | 02:00 |
| Porto Alegre Cuautitlán Izcalli | Central Time | 02:00 |
| Porto Alegre Yinchuan | China Time | -11:00 |
| Porto Alegre Skopje | Central European Time | -05:00 |
| Porto Alegre Vereeniging | South Africa Standard Time | -05:00 |
| Porto Alegre The Hague | Central European Time | -05:00 |
| Porto Alegre Long Beach | Pacific Time | 04:00 |
| Porto Alegre Mixco | Central Time | 03:00 |
| Porto Alegre Lyon | Central European Time | -05:00 |
| Porto Alegre Londrina | Brasilia Time | 00:00 |
| Porto Alegre Mesa | Mountain Time | 04:00 |
| Porto Alegre Jiaojiangcun | China Time | -11:00 |
| Porto Alegre Matsudo | Japan Time | -12:00 |
| Porto Alegre Juiz de Fora | Brasilia Time | 00:00 |
| Porto Alegre Nishinomiya | Japan Time | -12:00 |
| Porto Alegre Tula | Moscow Time | -06:00 |
| Porto Alegre Borough of Staten Island | Eastern Time | 01:00 |
| Porto Alegre Kawaguchi | Japan Time | -12:00 |
| Porto Alegre Zunyi | China Time | -11:00 |
| Porto Alegre Jiaxing | China Time | -11:00 |
| Porto Alegre Belford Roxo | Brasilia Time | 00:00 |
| Porto Alegre Jammu | India Standard Time | -08:30 |