Selichot

Ashkenazi Jews begin saying Selichot tonight, the week of Rosh Hashana.

Selichot are forgiveness prayers that are customarily said before the Rosh Hashana holiday, until Yom Kippur. They're typically said after midnight.

Jews of Sephardi descent say Selichot for the entire month of Elul, which is the month leading up to Rosh Hashana.