Yom Kippur, the Day of Atonement, is the most holy day of the Jewish year. It's the most important holiday, the "Sabbath of Sabbaths," in Judaism.

Yom Kippur, known as the Day of Atonement, is considered the holiest day in Judaism. In 2025, the holiday begins on Oct. 1. The holiday is observed with a 25-hour fast and special prayer services to ...