Word

十日戎

とおかえびす
festival held on January 10 in honor of Ebisu, the god of fishing and commerce
Word

十日夜

とおかんや、とおかや
Harvest festival held on the night of the tenth day of the tenth month (to send the rice paddy gods back to the mountains after harvest)
Word

十八日

18日
じゅうはちにち
eighteenth day of the month; eighteen days
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十六日

16日
じゅうろくにち
sixteenth day of the month; sixteen days
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出産予定日

しゅっさんよていび
expected date of confinement; expected delivery date (of a baby)
Word

週休二日制

週休2日制
しゅうきゅうふつかせい
five-day workweek system; five-day school-week; having two days off in at least one week of a month
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出発日

しゅっぱつび
day of departure
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七日鮫

なぬかざめ、ナヌカザメ
blotchy swell shark (Cephaloscyllium umbratile)
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思い立ったが吉日

exp
おもいたったがきちじつ、おもいたったがきちにち
no time like the present; make hay while the sun shines; it's the auspicious day when you've just thought of it
Word

至日

しじつ
day of the solstice