The 93rd annual National Christmas Tree Lighting Ceremony will take place Thursday, December 3, 2015, 5 p.m. on the Ellipse across from the White House. Tickets are free and are available by lottery. To enter the lottery go to www.thenationaltree.org. For those without computer access, call 1-877-444-6777. The lottery will close on Monday, October 19, 2015 at 10:00 a.m.