Yom Kippur, also known as the Day of Atonement, is the holiest day of the year in Judaism. Its Hebrew name, יום כיפור (Yom Kippur), translates literally to "Day of Atonement." It is observed on the 10th day of Tishrei, the seventh month of the Hebrew calendar, which usually falls in September or October in the Gregorian calendar. Yom Kippur is a day of atonement marked by fasting, prayer, and repentance. It is one of the High Holidays (or Yamim Noraim, Hebrew for "Days of Awe") in the Jewish calendar, which also includes Rosh Hashanah, the Jewish New Year. The day is observed with a 25-hour fast and a special religious service held in synagogues, where the Book of Life is symbolically opened, and prayers are offered for forgiveness. In other languages, Yom Kippur is known as Yom Kipur in Spanish, Jour du Grand Pardon in French, and Tag der Sühne in German.