© mimon/Fotolia
Yom Kippur, the Jewish Day of Atonement, is observed on the 10th day of the month of Tishri (falling in September or October). It is the culmination of a 10-day period of penitence and reflection that begins with Rosh Hashana (New Year’s Day). The most solemn of Jewish religious holidays, Yom Kippur is observed with fasting and prayer.