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

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

a birthday

幾日も幾日も: day after day

be new, it has not been long since, still in the early days of, not many days have passed since

Sabbath (Biblical seventh day)

Sabbath (Biblical seventh day)

Sabbath (Biblical seventh day)

anniversary (day an exact number of years since an event)