Fait mathématique: 11863 is an unremarkable number.
Culture générale: 11863 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: June 23rd is the day in 1931 that Wiley Post and Harold Gatty take off from Roosevelt Field, Long Island in an attempt to circumnavigate the world in a single-engine plane.