the fifth day of the month / five days

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

daily necessities; goods for every day use

all day

revisionism

"Historical kana usage", a prescriptive method of using kana to write Japanese. Devised in the Edo period by Keichū (契沖) and taught in schools until 1946, it aims to be etymologically faithful and reflects earlier stages of the language (Heian period and earlier).