Kwizihiza umwaka mushya w'Ubushinwa ni umunsi mukuru w'ingenzi mu mwaka.Abashinwa barashobora kwizihiza umwaka mushya w'ubushinwa muburyo butandukanye ariko ibyifuzo byabo ni bimwe;bifuza ko umuryango wabo n'inshuti bazagira ubuzima bwiza n'amahirwe mumwaka utaha.Kwizihiza umwaka mushya w'Abashinwa bimara iminsi 15.
Mu bikorwa byo kwizihiza harimo umunsi mukuru mushya w'Abashinwa, inkongi y'umuriro, guha abana amahirwe y'amahirwe, inzogera y'umwaka mushya no gusuhuza umwaka mushya w'Ubushinwa.Benshi mubashinwa bazahagarika ibirori murugo rwabo kumunsi wa 7 wumwaka mushya kuko ibiruhuko byigihugu bikunze kurangira uwo munsi.Icyakora ibirori ahantu rusange birashobora kumara kugeza kumunsi wa 15 wumwaka mushya.