Fatto generale: 911 is the number of days after September 11th that the Madrid Attack took place.
Fatto matematico: 911 is the American emergency number.
Trivia: 911 is the number of days after September 11th that the Madrid Attack took place.
Data storica: June 29th is the day in 1888 that George Edward Gouraud records Handel's Israel in Egypt onto a phonograph cylinder, thought for many years to be the oldest known recording of music.