8:01am
American Airlines Flight 11 takes off from Boston bound for Los Angeles.
8:14am
United Airlines Flight 175 takes off from Boston bound for Los Angeles.
8:19am
American Flight 11 crew alerts airline to hijacking.
8:21am
American Airlines Flight 77 takes off from Washington DC bound for Los Angeles.
8:40am
FAA notifies North American Aerospace Defense Command and the Northeast Air Defense Sector about suspected hijacking of American Flight 11.
8:41am
United Airlines Flight 93 takes off from Newark bound for San Francisco.
8:43am
FAA notifies NORAD about suspected hijacking of United Flight 175.
8:46am
American Flight 11 crashes into North Tower of World Trade Center.
8:48am
First news reports that American Airlines Flight 11 has crashed into One World Trade Center (North Tower).
8:50am
White House Chief of Staff tells US President George W. Bush that a plane has hit the World Trade Center.
8:59am
Several people on UA Flight 175 manage to contact authorities and loved ones.
9:03am
UA Flight 175 crashes into Two World Trade Center (South Tower).
9:05am
President Bush is informed about the second WTC plane crash.
9:08am
FAA bans all takeoffs nationwide for flights going to or through New York airspace.
9:12am
Flight attendant and passenger on American Flight 77 contact people on the ground to report hijacking.
9:17am
FAA closes NYC area airports.
9:21am
NYC Port Authority closes all bridges and tunnels in NYC.
9:24am
FAA notifies NORAD about suspected hijacking of American Flight 77.
9:31am
President Bush calls crashes 'an apparent attack on our country.'
9:32am
New York Stock Exchange closed.
9:36am
US Vice President Cheney is evacuated to the Presidential Emergency Operations Center.
9:40am
American Flight 77 crashes into the Pentagon.
9:45am
FAA orders all commercial flights grounded.
9:48am
U.S. Capitol and White House evacuated.
9:57am
UA Flight 93 passengers and crew have contacted authorities and loved ones after hijacking and are believed to have mounted a counterattack.
9:59am
Two World Trade Center (South Tower) collapses (note: other sources cite the collapse at 10:03, 10:05, & 10:06).
10:07am
United Airlines Flight 93 crashes in Somerset County, Pennsylvania (time approximate).
10:15am
Portion of the Pentagon collapses.
10:13am
United Nations building evacuates.
10:22am
State and Justice Departments, and World Bank, evacuated in Washington DC.
10:24am
FAA reroutes inbound transatlantic flights to land in Canada.
10:28am
One World Trade Center (North Tower) collapses.
10:45am
All federal office buildings in Washington DC evacuated.
10:48am
Police confirm Pennsylvania plane crash.
10:53am
New York's primary elections postponed.
10:54am
Israel evacuates diplomatic missions.
10:57am
New York Governor George Pataki announces closure of all state government offices.
11:00am
Mayor Rudolph Giuliani urges New Yorkers to stay at home and orders an evacuation of the area south of Canal Street
12:04pm
Los Angeles International Airport evacuated.
12:15pm
US closes some Canada and Mexico border crossings.
1:02pm
New York Mayor Giuliani evacuates Manhattan south of Canal Street.
1:04pm
President Bush says: 'Make no mistake, the United States will hunt down and punish those responsible for these cowardly acts' (note: other sources cite this at 12:36).
1:27pm
State of Emergency declared in Washington DC.
2:30pm
FAA announces suspension of US commercial air traffic until noon EST Wednesday 9/12.
2:51pm
Navy sends missile destroyers to New York and Washington.
3:07pm
President Bush arrives at Strategic Command at Offutt Air Force Base in Nebraska.
4:00pm
CNN National Security Correspondent David Ensor reports there are indications that Osama bin Laden is involved in attacks.
4:10pm
Seven World Trade Center reported to be on fire.
4:25pm
American Stock Exchange, Nasdaq, and New York Stock Exchange announce they will be closed Wednesday, 9/12.
4:45pm
City of New York announces that 200 firefighters and 78 police officers are missing (note: according to other sources, at 7:45 pm the New York Police Department announced that at least 78 police officers were missing and that as many as half (200) of the first firefighters at the scene had been killed.)
5:25pm
Seven World Trade Center building collapses.
5:30pm
Explosions reported in Kabul, Afghanistan (note: other sources cite this for 6 pm).
6:40pm
Press conference by US Defense Secretary Donald Rumsfeld from the Pentagon.
6:45pm
President Bush arrives at the White House (note: other sources say he arrived at 6:54 pm).
8:30pm
President Bush addresses the nation. Search warrants obtained for homes and post office boxes in Florida.
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