Fait général: 5963 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 5963 is the number of intersections when all the diagonals of a regular 22-gon are drawn.
Culture générale: 5963 is a boring number.
Date historique: April 28th is the day in 1978 that President of Afghanistan, Mohammed Daoud Khan, is overthrown and assassinated in a coup led by pro-communist rebels.