Phileas Fogg Win a Wager Day is observed worldwide every December 21. This unofficial holiday commemorates the day Phileas Fogg, the protagonist of Jules Verne’s novel "Around the World in Eighty Days," completed his journey around the globe. The novel, first published in 1872, features Fogg wagering £20,000 that he can travel around the world in 80 days or less. To celebrate, people often reread the book, watch its various adaptations, or plan their own adventures. The origins of the holiday are unclear, but it likely stems from the enthusiasm of Jules Verne fans. It serves as a reminder of the spirit of adventure and the advancements in travel since Fogg's fictional journey.