when was 9/11 attack

The term "9/11" refers to the September 11 attacks, which occurred on September 11, 2001. On that day, four coordinated Islamist terrorist suicide attacks by al-Qaeda were carried out against the United States. Nineteen terrorists hijacked four commercial airliners. Two planes were flown into the Twin Towers of the World Trade Center in New York City, one into the Pentagon in Virginia, and a fourth plane crashed in a field in Pennsylvania during a passenger revolt. The attacks resulted in nearly 3,000 deaths and had profound global consequences.