Yom Kippur is a holiday that falls on the tenth day of the month of Tishri in the Jewish calendar. (September or October on the American calendar.) It is the most important day of the Ten Penitential Days, which begins the New Year. Yom Kippur is the most sacred of all Jewish holidays. Yom Kippur is a day for confession, repentance, and prayers for forgiveness of wrongdoings committed during the year against God and His covenant. It is also the day in which a Jewish person’s fate is set for the upcoming year. Jewish people spend the day fasting and almost never ending prayer.