When do Selichot start, and what are they?

Here's what you need to know

Selichot are penitential prayers recited in preparation for the High Holidays, starting before Rosh Hashanah.

The specific rule is

Selichot (penitential prayers) begin on the Saturday night before Rosh Hashanah, unless Rosh Hashanah falls early in the week, in which case they start the Saturday night of the previous week.

Background

Selichot are special prayers for forgiveness recited in the lead-up to the High Holidays, emphasizing repentance. The Ashkenazi custom is to begin these prayers on the Saturday night before Rosh Hashanah, ensuring at least four days of Selichot. If Rosh Hashanah falls on a Monday or Tuesday, Selichot start the Saturday night of the previous week. Sephardic communities typically begin reciting Selichot at the start of the month of Elul, giving them a longer period of preparation.

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