It is celebrated on the fifteenth day of the first month of the lunar year.

通常在阴历年的第一个月的第十五天庆祝。

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On the fifteenth day of that month the Lord 's Feast of Unleavened bread begins; for seven days you must eat bread made without yeast.

这月十五日是向耶和华守的无酵节，你们要吃无酵饼七日。

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Say to the Israelites: 'on the fifteenth day of the seventh month the Lord' s Feast of Tabernacles begins, and it lasts for seven days.

你晓谕以色列人说：'这七月十五日是住棚节，要在耶和华面前守这节七日。

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The official Hispanic Heritage Month celebration ends on October fifteenth.

VOA: special.2009.09.18

However, businessmen across the eurozone operating in the retail sector did not show greater confidence, according to the survey, chiming with separate survey data from research firm Markit that indicated retail sales across the single currency area fell for the fifteenth month in a row in January.

BBC: Spain's recession worsens in the fourth quarter