Fait mathématique: 20059 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 20059 is a boring number.
Date historique: December 1st is the day in 1918 that Transylvania unites with Romania, following the incorporation of Bessarabia (March 27) and Bukovina (November 28), thus concluding the Great Union.