one day, 24 hours / the daytime, the period from dawn until dusk / (figuratively) a short period of time / one day, someday, an unspecified day / the first day of the month

一日, 1日: one day

(business) one on one meeting between an employee and a superior

daily necessities; goods for every day use

一日中: all day, throughout the day, sunrise to sunset, all around the clock

一日経: dead memorial service where many gather to transcribe a sutra in one day

one day

sun / daytime, daylight / day

the daytime, during the day / a half day, half of a day

the eighth day of the month / eight days