Families of the nearly 3,000 people killed in the terrorist attacks of September 11, 2001, will gather at the World Trade Center site on Sunday to remember those they lost. At 8,46 a.m houses across New York City will toll their bells as a moment’s silence to mark the  instant when the first plane struck the World Trade Center’s north tower.
Then family members will begin the annual ceremonial reading of the 2,977 names of those who died in New York, Arlington, Va., and Pennsylvania, as well as the six people killed in the 1993 World Trade Center bombing.
American Presidential candidates Donald Trump and Hilary Clinton are planning to mark the 15th anniversary of the Sept. 11 terror attacks by attending the official commemoration at ground zero. Trump, a native New Yorker, and Clinton, who was senator from New York at the time of the attacks, have agreed to refrain from campaigning Sunday, continuing the tradition of setting aside partisan politics on the somber anniversary.