the fourth day of the month / four days

the third day of the month / three days

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

all day

Cultural Revolution (Great Proletarian Cultural Revolution)

(management) key performance indicators; KPI

Kyūjitai form of 韓国人: South Korean (person)

Kyūjitai form of 韓国学: Korean studies

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