What Is The 10th Month Of The Jewish Calendar. What is the jewish calendar based on? In the jewish calendar, unlike the secular one, a leap year consists of adding an extra month, and there are seven such leap years within every cycle of nineteen.
Become a study.com member to unlock this answer! תִּשְׁרֵי (transliterated tishrei or tishri) is the 7th month of the hebrew year, is 30 days long, and corresponds to september or october on the gregorian calendar.