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

the sixth day of the month / six days

two days, a two-day period / the second day after some set point in time / the second day of the month

the fourth day of the month / four days

the third day of the month / three days

the tenth day of the month / ten days

the fifth day of the month / five days

daily necessities; goods for every day use

regular day off (e.g. closed every Monday)

the twentieth day of the month / twenty days / Short for 二十日鼠 (hatsuka nezumi): a house mouse