日にち
ひにち · hinichi · JLPT N2 · noun
event
📅 日 (day/sun) + にち (day count): a day on the calendar, i.e. a date or simply the day
日にち is built from 日 (day) read as にち, the same word as the counter for days. It means a specific calendar date when planning something, or just the number of days.
日 — pictograph of the sun
日 is a pictograph of the sun, originally drawn as a circle with a dot or stroke inside representing the sun's substance. Over time the round shape was squared off into the modern rectangular form. It means 'sun' and by extension 'day'.