The national Christmas tree lighting ceremony is an annual event that takes place in Washington D.C. on the National Mall. The ceremony is a celebration of the holiday season and the lighting of the national Christmas tree, which is typically held in mid-December. It's a beloved tradition that draws thousands of people from all over the country to witness the spectacular display of lights and enjoy the festivities. The national Christmas tree lighting ceremony is a treasured event that brings people together in the spirit of the season.