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

the tenth day of the month / ten days

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

(rare) a birthday

a birthday

one day

twelfth day of the month

the twentieth day of the month / twenty days

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

the eighth day of the month / eight days