日夜
Common
Adverb
Noun
1
adverb (fukushi)noun (common) (futsuumeishi)
día y noche;siempre
1
adverb (fukushi)noun (common) (futsuumeishi)
day and night;around the clock;always;constantly
看護婦たちは、日夜患者の世話をしている。
The nurses attend to the patient day and night.