Festivus (/ˈfɛstɪvəs/) is celebrated on December 23 as an alternative to the pressure and commercialism of Christmas. Originally created by author Daniel O’Keefe, Festivus entered popular culture after it was made the focus of the 1997 Seinfeld episode “The Strike.”

The non-commercial holiday, as  shown on Seinfeld, occurs on December 23 and includes a Festivus dinner, a plain aluminum Festivus pole instead of a tree, practices such as the “Airing of Grievances” and “Feats of Strength”, and the labeling of easily explainable events as “Festivus miracles.”