From FaceBook event page:

A full weekend in Oregon Hill. Join your friends and neighbors Friday night at 7:30 pm for our community movie, Sheep Detectives in Pleasants Park. As always free refreshments are served.
Saturday and Sunday look for neighbors sharing treasures in a community yard sale.
On Sunday, stop by Pleasants Park and enjoy a hamburger or hotdog while playing some outdoor games with friends. Everything is free. Start up time at noon.