Tishrei is the seventh month in the religious calendar and the first month in the civil and chronological calendar. Tishrei always has 30 days. The name is not mentioned in the Bible, in which the seventh month is referred to as Ethanim (I Kings 8:2).

The word Tishrei derives fr the Akkadian (Tashritu) or from the Aramatic "sherei" meaning " to begin." Its zodiac sign is Libra, which was related homiletically to the penitential season at the beginning of the month. This period covers the first ten days of the month, known as Aseret Yemei Teshuva, the Ten Days of Repentance. This period begins with Rosh Hashanah (1 Tishrei) and conclude with Yom Kippur (10 Tishrei).

According to the aggadah, during the month of Tishri the world was created, the patriarchs were born, and Moses descended for the second time from Mount Sinai.