Eighty days around the world
The reference is to Jules Verne’s Around the World in Eighty Days (Le tour du monde en quatre-vingts jours, Paris: Pierre-Jules Hetzel, 1873.) In the story, Phileas Fogg of London and his newly employed French valet Passepartout attempt to circumnavigate the world in 80 days on a £20,000 wager set by his friends at the Reform Club.