Yom Kippur Katan (literally "Small Yom Kippur") is a custom of fasting and prayer observed on the day preceding the New Moon. : The practice was inaugurated in the 16th century in by the Kabbalist Rabbi Moses Cordovero
: Fasting is prohibited during the month of Nisan (the month of Passover), so it is not observed then. Verified PDF Resources & Downloads yom kippur katan pdf download verified