noun, adverb
next day; the following day
Refers to the day after a reference point, typically in narrative or scheduling contexts. Can be used as a noun or adverbially without a particle.
翌日、彼は早く起きた。
The next day, he woke up early.
会議は翌日に延期された。
The meeting was postponed to the following day.
Compound of 翌 (よく, 'following') and 日 (じつ, 'day'). The reading よくじつ is a standard on'yomi combination.