Fast of Behav
The Fast of Behav refers to a tradition of Ashkenazic Jews to fast on the Monday, Thursday, and then following Monday after the holidays of Sukkot and Pesach. While today very few people fast, many Ashkenazic communities recite the Selichot for these days. Practically, the fasts are observed in the months of Cheshvan and Iyar, so as not to fast in the happy months of Tishrei and Nisan.