Meaning of 十五日 in Japanese

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Definition of 十五日

じゅうごにち(juugonichi) 【十五日】

ひとのうわさもしちじゅうごにち(hitonouwasamoshichijuugonichi) · ひとのうわさもななじゅうごにち(hitonouwasamonanajuugonichi) 【人の噂も七十五日】

(exp) wonder lasts but nine days; gossip lasts just one season (lit: 75 days)
そんな失敗なんて気にするな。人の噂も七十五日。みんなすぐに忘れるさ。
I wouldn't let a goof-up like that get to you. People have short memories and the one good thing about gossip is that it's short-lived.

人ひとの噂うわさも七十五じゅうご日ひ。

A wonder lasts but nine days.

I wouldn't let a goof-up like that get to you. People have short memories and the one good thing about gossip is that it's short-lived.