Festdos, also known as "Festivus," is a fictional holiday created by the television show Seinfeld. The holiday is celebrated on December 23rd, the day after Christmas and the day before Hanukkah. Festdos is a secular holiday that encourages participants to engage in activities that are not typically associated with Christmas, such as the "Airing of Grievances" and the "Feats of Strength." The holiday is celebrated by the Festivus family, which consists of George, Frank, and the rest of the Festivus crew. The holiday is celebrated with a Festivus pole, which is decorated with a Festivus miracle, a Festivus hat, and a Festivus tree. The holiday is celebrated with a Festivus dinner, which is a traditional meal that is served on the Festivus pole. The holiday is celebrated with a Festivus caroling, which is a traditional caroling that is sung on the Festivus pole. The holiday is celebrated with a Festivus gift exchange, which is a traditional gift exchange that is held on the Festivus pole. The holiday is celebrated with a Festivus parade, which is a traditional parade that is held on the Festivus pole. The holiday is celebrated with a Festivus celebration, which is a traditional celebration that is held on the Festivus pole. The holiday is celebrated with a Festivus party, which is a traditional party that is held on the Festivus pole. The holiday is celebrated with a Festivus feast, which is a traditional feast that is held on the Festivus pole. The holiday is celebrated with a Festivus festival, which is a traditional festival that is held on the Festivus pole. The holiday is celebrated with a Festivus fair, which is a traditional fair that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of lights, which is a traditional festival of lights that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of music, which is a traditional festival of music that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of food, which is a traditional festival of food that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of fun, which is a traditional festival of fun that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of games, which is a traditional festival of games that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of sports, which is a traditional festival of sports that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of art, which is a traditional festival of art that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of science, which is a traditional festival of science that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of technology, which is a traditional festival of technology that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of nature, which is a traditional festival of nature that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of culture, which is a traditional festival of culture that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of history, which is a traditional festival of history that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of language, which is a traditional festival of language that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of literature, which is a traditional festival of literature that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of philosophy, which is a traditional festival of philosophy that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of religion, which is a traditional festival of religion that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of politics, which is a traditional festival of politics that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of economics, which is a traditional festival of economics that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of law, which is a traditional festival of law that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of medicine, which is a traditional festival of medicine that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of education, which is a traditional festival of education that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of entertainment, which is a traditional festival of entertainment that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of travel, which is a traditional festival of travel that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of fashion, which is a traditional festival of fashion that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of food and drink, which is a traditional festival of food and drink that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of music and dance, which is a traditional festival of music and dance that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of sports and games, which is a traditional festival of sports and games that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of art and culture, which is a traditional festival of art and culture that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of science and technology, which is a traditional festival of science and technology that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of nature and environment, which is a traditional festival of nature and environment that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of history and language, which is a traditional festival of history and language that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of literature and philosophy, which is a traditional festival of literature and philosophy that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of religion and politics, which is a traditional festival of religion and politics that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of economics and law, which is a traditional festival of economics and law that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of medicine and education, which is a traditional festival of medicine and education that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of entertainment and travel, which is a traditional festival of entertainment and travel that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of fashion and food and drink, which is a traditional festival of fashion and food and drink that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of music and dance and sports and games, which is a traditional festival of music and dance and sports and games that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of art and culture and science and technology, which is a traditional festival of art and culture and science and technology that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of nature and environment and history and language, which is a traditional festival of nature and environment and history and language that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of literature and philosophy and religion and politics, which is a traditional festival of literature and philosophy and religion and politics that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of economics and law and medicine and education, which is a traditional festival of economics and law and medicine and education that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of entertainment and travel and fashion and food and drink, which is a traditional festival of entertainment and travel and fashion and food and drink that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of music and dance and sports and games and art and culture and science and technology, which is a traditional festival of music and dance and sports and games and art and culture and science and technology that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of nature and environment and history and language and literature and philosophy and religion and politics, which is a traditional festival of nature and environment and history and language and literature and philosophy and religion and politics that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of economics and law and medicine and education and entertainment and travel and fashion and food and drink, which is a traditional festival of economics and law and medicine and education and entertainment and travel and fashion and food and drink that is held on the Festivus pole. The holiday is celebrated with a Festivus festival of music and dance and sports and games and art and culture and science and technology and nature and environment and history and language and literature and philosophy and religion and politics, which is a traditional festival of music and dance and sports and games and art and culture and science and technology and nature and environment and history and language and literature and philosophy and religion and politics that is held on the Festivus pole.