one day

(rare) the first day of the month

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

(archaic) (as for) today

today, this day / nowadays

Same as こんにち above

good day, good afternoon: a Japanese greeting used in the daytime

take

all day

the first day of the month (solar or lunar calendar)