Fatto matematico: 2080 is the number of different arrangements (up to rotation and reflection) of 26 non-attacking bishops on a 14×14 chessboard.
Trivia: 2080 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 10th is the day in 1919 that Austria and the Allies sign the Treaty of Saint-Germain recognizing the independence of Poland, Hungary, Czechoslovakia and Yugoslavia.