No days were as festive for Israel as Tu B’Av and Yom Kippur –Tractate Ta’anit.
What is the Mishna trying to tell us? We understand why Tu B’Av, a magical day of love, was considered a happy day. But Yom Kippur? Isn’t that supposed to be the day that we punish our bodies by fasting and reflect on the many awful things we did in the previous year? How does that promote simcha (Jewish joy)?