Friday's commemoration at Ground Zero includes a reading of all the victims' names and a moment of silence to mark the impact of the two hijacked planes and the collapse of the towers. Beams pointing skyward will be lit at night from Ground Zero.
Here is a list of events in NYC:
The Bell of Hope will ring at St. Paul's Chapel. Ceremonies at Ground Zero including the reading of the names and singing by the Brooklyn Youth Chorus. This link shows the Brooklyn Youth Chorus Rehearsing the day before.
Mass will be held at St. Patrick's Cathedral in honor of the firefighters who fell on 9/11.
Day of Remembrance Liturgy followed by prayers for healing and anointing with oil at St. Paul's Chapel.
Secretary of State Hilary Clinton will deliver the keynote address at the first annual National Day of Service and Remembrance.
Concerts will be held throughout the city organized by The September Concert.
Here's a link to a piece on Remembering the Rescue Dogs at the World Trade Center and the Pentagon.