kwīrirwa (-īririwe)     v    to spend all day, to last all day
 kwirirwa : passive of...
kwīrīra (-īrīye)     v    to be overtaken by nightfall
kwīrirwako (-īrirweko)     v    to spend the whole day at a certain task
day    umusi, umunsi
(~ before yesterday, ~ after tomorrow) hirya y'ejo
(it is ~) harakeye
(on a certain ~) umusi ur'izina, umunsi ur'izina
(the next ~) bukeye
(today) uyumusi, uyumunsi
(time of day) :
(9 to 10 a.m.) kumusase
(noon) umutāga, ku mamima ngohe
(middle of day) amashōka
(about 3 p.m.) amasubirayo y'inyana
(after dark) bwateranye
(to be ~) guca
(to spend all ~) kwīrirwa
(to start the ~) kuramuka
En-En dictionary 
spend    (all day) kwīrirwa
(all night without sleeping) gukēsha
(the night) kurāra
(the night alone) kwīrāza
(time) kumara
(time together) kumarana
En-En dictionary 
 kwirirwa found in: Imyibutsa (proverbs)
Umwibutsa 292   Kwirirwaayo sikwo gukora. ...