Umwaka mushya w'Ubushinwa, uzwi kandi ku Iserukiramuco, ni igihe cyo guhurira hamwe, kwizihiza, no gukungahaza umuco. Hamwe n'imigenzo nko guterana mumuryango, gucana umuriro, no kurya biryoshye, ibirori birerekana intangiriro nshya yumwaka utaha. Ntabwo yizihizwa mubushinwa gusa, ahubwo nabantu babarirwa muri za miriyoni kwisi yose, bahuza abaturage mubyishimo n'ibyiringiro byumwaka uteye imbere. Kwizihiza umwuka wumwaka mushya wubushinwa, aho imigenzo ihura nigihe kigezweho muguhimbaza isi yose, umuco, nintangiriro nshya.