Erev Yom Kippur
Yom Kippur (/
Yom means "day" in Hebrew and Kippur comes from a root that means "to atone", which is related to the biblical name of the covering of the Ark (called the kapporet). Yom Kippur is usually expressed in English as "Day of Atonement".
Yom Kippur is "the tenth day of [the] seventh month" (Tishrei) and is regarded as the "Sabbath of Sabbaths". Rosh Hashanah (referred to in the Torah as Yom Teruah) is the first day of that month according to the Hebrew calendar. On this day forgiveness of sins is also asked of God.