The Office of International Services at the University of Pittsburgh and the Thai Student Association will present a Thai Loy Krathong Festival on November 24. "Loi Krathong takes place on the evening of the full moon of the 12th month in the traditional Thai lunar calendar", says Wikipedia.
The name could be translated as "to float a basket", and comes from the tradition of making krathong or buoyant, decorated baskets, which are then floated on a river.The free festival runs from 11:00 to 1:00 pm in room 310 of the William Pitt Union (campus map).