Timeline of the September 11 attacks

The following timeline is a chronological list of all the major events leading up to, during, and immediately following the September 11 attacks against the United States in 2001, through the first anniversary of the attacks in 2002.

September 11, 2001
All times are in local time (EDT or UTC−4).

Rest of September

 * September 13: On the personal orders of Queen Elizabeth II, The "Star-Spangled Banner" is played during the Changing of the Guard at Buckingham Palace in London, marking the first time a foreign national anthem was played outside Buckingham Palace on an occasion other than a state visit. Russia observes a minute's silence.
 * September 14 to September 21: Worldwide stock markets plummet.
 * September 15: CIA director George Tenet presents the Worldwide Attack Matrix.
 * September 20: George W. Bush announces that the US is at war.

October

 * October 1: Rudy Giuliani speaks to the United Nations General Assembly.
 * October 7: U.S. Attack on Afghanistan commences.

Beyond October

 * March 2002: The Tribute in Light project begins.
 * September 11, 2002: First anniversary of the September 11, 2001 attacks commemorations are held throughout the world, particularly the U.S.