Fait mathématique: 20815 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 20815 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: December 26th is the day in 1999 that the storm Lothar sweeps across Central Europe, killing 137 and causing US$1.3 billion in damage.