Horsethief Days is a festival that happens in the Borough of Knox, in Western Pennsylvania. It happens the week before school goes back into session. (last week in August) During Horsethief Days there are so many activities you can do. For instance, there are all sorts of dances (country line, adult, and teen), kiddie parade, sidewalk sales, Nickelodeon night, bike races, tractor races and eventually the Horsethief Parade on the last day of the festival. The activities are fun and very interesting.