In Washington, D.C., the National Christmas Tree Lighting Ceremony takes place Dec. 6, at 5 p.m. at the White House Ellipse. Tickets are required; details at 202- 208-1631. Entertainers and a military band perform and President Bush will speak. On Dec. 5 at 5 p.m., the Capitol Christmas Tree Lighting Ceremony takes place on the West Lawn of the U.S. Capitol.