Today, New York City honors the thousands of people killed in NYC on September 11, 2001; the victims who died in a crash in Shanksville, Pennsylvania that day; the victims in the simultaneous attack at the Pentagon; and the six victims from the first World Trade Center bombing on February 26, 1993. The total number of victims from all of those combined attacks numbers 2,983. There are six moments of silence—two for when the planes hit the towers, two for when each tower fell, one for the attack on the Pentagon and one for Flight 93, which crashed in Shanksville.

The commemoration is being held at the 9/11 Memorial and is open to family of the victims. The names of all victims from the WTC, Pentagon and Flight 93 attacks will be read, as well the 1993 WTC attack victims. You can see the victims' names here.

Here is the program of events:

8:46 AM

Citywide moment of silence (observance of time first plane struck North Tower)
(Houses of worship will toll their bells throughout the City)

Families of victims of 2001 and 1993 attacks will begin reading the names in pairs

9:03 AM Moment of silence (observance of time second plane struck South Tower)

Reading of names continues/music resumes

9:37 AM Moment of silence (observance of time Flight 77 struck the Pentagon)

Reading of names continues/music resumes

9:59 AM Moment of silence (observance of time of fall of the South Tower)

Reading of names continues/music resumes

10:03 AM Moment of silence (observance of time Flight 93 crashed near Shanksville, Pa.)

Reading of names continues/music resumes

10:28 AM Moment of silence (observance of time of fall of the North Tower)

Reading of names continues/music resumes

Reading of names concludes

12:30 PM Program concludes

The Tribute in Light, which has been tested over the past week, will be illuminated at sunset. The lights then fade away at dawn tomorrow. Tonight's sunset is at 7:12 p.m.