noun, adverb

  1. one day.
  2. all day (long), the whole day, from morning till night.

noun

  1. 1st day of the month.

Variations

Pronunciation Kanji Kana Is Common
一日 いちにち
一日 いちじつ
1日 いちにち
1日 いちじつ

Contained Kanji Breakdown

one, one radical (no.1)
イチ いっ ひと- (1st, N5)
day, sun, Japan
ひ にっ ニチ (1st, N5)