Fatto matematico: 1240 is the number of symmetric arrangements of 6 non-attacking queens on a 6×6 chessboard.
Trivia: 1240 is an unremarkable number.
Data storica: May 24th is the day in 1988 that the fourth game of the 1988 Stanley Cup Finals between the Edmonton Oilers and the Boston Bruins had to end in a tie because of a power failure.