Festivus is a secular holiday celebrated on December 23rd, popularized by the television show Seinfeld. It was created as an alternative to the commercialism of Christmas and emphasizes simplicity and family gatherings. The holiday features unique traditions, including the display of an unadorned aluminum pole instead of a Christmas tree. One of the key customs of Festivus is the "Airing of Grievances," where participants share their disappointments with one another. Another tradition is the "Feats of Strength," which involves physical challenges, typically culminating in a wrestling match. Festivus has gained a following as a humorous and lighthearted celebration.