Fatto matematico: 1453 is a member of the Fibonacci-type sequence starting with 2 and 5.
Trivia: 1453 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: December 23rd is the day in 1982 that the United States Environmental Protection Agency announces it has identified dangerous levels of dioxin in the soil of Times Beach, Missouri.