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20th day of the month
20 days
廿日に行事があるよ。
There is an event on the 20th.
廿日は旧暦でよく使われる表現だ。
The 20th is an expression often used in the old calendar.
正月の廿日に地域の特別なお祭りが行われます。
A special local festival is held on the 20th of the New Year.