Sukkot reading (includes Simchat Torah & Shemini Atzeret)
And there's this meaningful Sukkot goal from the Vilna Gaon:
One tidbit from the Vilna Gaon regarding Succos is that he held that the mitzvah of v’somachto bchagecha, is to remain constantly happy for the whole 8-day period.
He also said that this is the hardest mitzvah to actually perform—not to get upset or lose the happy feeling for such a long period.
(source)