15th of Av

Tachnun is not recited on the 15th of Av, nor during the Mincha beforehand.

It is forbidden to fast on the 15th of Av, even a Chosson and Kallah.

The 15th of Av is an opportune time for a joyous Farbrengen and Hachlatos to increase Torah study.

One should continue to participate in a Siyum and learn Hilchos Beis Habechira every day until (and including) the 15th of Av.