Fait mathématique: 4315 is an unremarkable number.
Culture générale: 4315 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: October 24th is the day in 2002 that Police arrest spree killers John Allen Muhammad and Lee Boyd Malvo, ending the Beltway sniper attacks in the area around Washington, DC.