Yom Kippur—the Day of Atonement—is considered the most important holiday in the Jewish faith. Falling in the month of Tishrei (September or October in the Gregorian calendar), it marks the culmination of the 10 Days of Awe, a period of introspection and repentance that follows Rosh Hashanah, the Jewish New Year. According to tradition, it is on Yom Kippur that God decides each person’s fate, so Jews are encouraged to make amends and ask forgiveness for sins committed during the past year. The holiday is observed with a 25-hour fast and a special religious service.
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