Mathematical fact: 6509 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 6509 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: October 26th is the day in 1992 that the London Ambulance Service is thrown into chaos after the implementation of a new CAD, or Computer Aided Dispatch, system which failed.