Yom Kippur (Hebrew:יום כיפור yom kippūr) is the Jewish holiday of the Day of Atonement. It falls on the tenth day of the Hebrew month of Tishri. The Bible calls the day Yom Hakippurim (Hebrew, "Day of the Atonements"). It is one of the Yamim Noraim (Hebrew, "Days of Awe"). The day is commemorated with a 25-hour fast and intensive prayer. It is the most holy day of the Jewish year.