Fait général: 2009 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2009 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 2009 is a boring number.
Date historique: July 1st is the day in 1915 that Lieutenant Kurt Wintgens achieves the first known aerial victory with a synchronized gun-equipped fighter plane, the Fokker M.5K/MG Eindecker.