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 1995 that the Sampoong Department Store collapses in the Seocho-gu district of Seoul, South Korea, killing 501 and injuring 937.