By Rabbi Yair Hoffman for 5tjt.com Today is Purim Katan. Purim Katan, which happens approximately every 2 years and 8 and a ½ months on average, occurs whenever there is an Adar Rishon. Unfortunately, many people treat it as kind of afterthought. There is a good argument that can be made, however, that marking this day- is actually a Torah obligation! But, before we get to Purim Katan – let’s get a little background: BACKGROUND OF RABBEINU YECHIEL Rabbeinu Yechiel of Paris was one of the great Baalei HaTosfos from Northern France. He is perhaps best known for defending Torah...