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The official ceremony to mark the 10th anniversary of the 9/11 attacks will take place at the National September 11 Memorial on Sunday.
The program begins at 8:40 a.m., with a citywide moment of silence.
8:46 a.m. _ moment of silence marking the time that the first plane struck the north tower. Houses of worship throughout the city will toll their bells, and the reading of the names will begin. Family members are the readers this year.
9:03 a.m. _ moment of silence marking the time the second plane struck the south tower. Then, the reading of the names resumes, along with background music.
9:37 a.m. _ moment of silence marking the time Flight 77 struck the Pentagon. The reading of the names continues.
9:59 a.m. _ moment of silence marking the moment the south tower fell. The reading of the names resumes.
10:03 a.m. _ moment of silence marking the crash of Flight 93 near Shanksville, Pa. Name-reading continues.
10:28 a.m. _ moment of silence marks the time the north tower fell. Family members continue reading names.
1 p.m. _ program concludes.