one day

(rare) the first day of the month

wake up / stay up, stay awake / get up, sit up / occur, happen

effectiveness / validity / availability / (judo) yuko, the points awarded for a type of move in a judo match or the judge's call of yuko

effective / valid / available

to use / to employ / to make use of, to apply / to spend

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

important, significant

importance, consequence, significance

with incredible speed / (formal) even at the fastest