“Happy Festivus” is the traditional greeting of Festivus a holiday featured in “The Strike” episode of Seinfeld. The episode first aired on December 18, 1997. Since then many people have been inspired by the goodness of the Seinfeld holiday and they now celebrate Festivus as any other holiday.
According to the Seinfeld model, Festivus is celebrated each year on December 23rd. However many people celebrate it other times in December and even at other times throughout the year.
The original slogan of Festivus is “A Festivus for the rest of us!” Instead of a tree an unadorned aluminum pole is used, in contrast to normal holiday materialism. Those attending Festivus may also participate in the “Airing of Grievances” which is an opportunity to tell others how they have disappointed you in the past year, followed by a Festivus dinner, and then completed by the “Feats of Strength” where the head of the household must be pinned. All of these traditions are based upon the events in the Seinfeld episode.