(literary) one day, 24 hours / (literary) the daytime, the period from dawn until dusk / (literary) (figuratively) a short period of time

(obsolete) one day, 24 hours / (obsolete) the daytime, the period from dawn until dusk

(rare, obsolete) (all senses appear to be identical as for hitohi above)

the moon / (astronomy) a natural satellite

every month

a female given name / a surname

month of the year

moon / month

a month as a duration of time / (possibly obsolete) month of the year

Short for 月曜日 (getsuyōbi): Monday