Fait mathématique: 2080 is the number of different arrangements (up to rotation and reflection) of 26 non-attacking bishops on a 14×14 chessboard.
Culture générale: 2080 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 10th is the day in 1932 that the New York City Subway's third competing subway system, the municipally-owned IND, is opened.