Fait mathématique: 1056 is the area of the smallest non-square rectangle that can be tiled with integer-sided squares.
Culture générale: 1056 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: November 21st is the day in 2004 that the second round of the Ukrainian presidential election is held, giving rise to massive protests and controversy over the election's integrity.