日夜 (にちや, nichiya) Japanese meaning: day and night | Kotomora研
究
に
励
ん
で
いる
。
He devotes himself to research day and night.
We respond to urgent communications regardless of day or night.
Usage patterns
日夜〈動詞〉to do something day and night / constantly
He is working on his research day and night.
日夜努力するto work hard constantly, day and night
The athletes keep working hard around the clock.
日夜励むto devote oneself diligently day and night
She applies herself to her studies day and night.