In December.
I think the tradition of the Christmas tree originated in Germany... or at least that's where the United States got it from.
Maroon 5
The Christmas Tree lighting ceremony at Rockefeller Center is very popular. The ice skating there is also very popular. The Christmas show at Radio City Music Hall starring the famous Rockettes is always the top choice for Christmas in NYC. Another choice is the lighting of the Christmas tree in Rockafeller Center, it is a big ceremony with much entertainment.
The largest scaled tree lighting held in the United States annually is currently the Capitol Christmas tree in Washington, DC. The tree is usually lit near the Christmas period up until the 26th of December.
The tree lighting ceremony
Because they can. ANSWER The traditional and best known Christmas tree in New York City is not at Times Square but at Rockefeller Center. And yes, it is a "real" tree that has been carefully sought out and then cut down ("harvested" for the tree-lighting ceremony and the Christmas season display.
It includes establishments making electric Christmas tree lighting sets
in 1995
Washington
The lighting of the Macy's Christmas tree!!!!!
Calvin Coolidge
The Ellipse in Washington D.C. is a large open space located south of the White House and north of the National Mall. It is a historic park that is used for various events and gatherings, including the annual National Christmas Tree lighting ceremony. The Ellipse is surrounded by several iconic landmarks, such as the Washington Monument and the National Museum of African American History and Culture.