answers: mid November
context: Rockefeller Center Christmas Tree The Rockefeller Center Christmas Tree is a large Christmas tree placed annually in Rockefeller Center, in Midtown Manhattan. The tree is erected in mid November and lit in a public ceremony in late November or early December. Since 1997, the lighting has been broadcast live, to hundreds of millions, on NBC's "Christmas in Rockefeller Center" telecast on a Wednesday after Thanksgiving. The broadcast features live entertainment and a tree lighting ceremony, where the tree is lit by the current Mayor of New York City and special guests. An estimated 125 million people visit the attraction each </s> National Christmas Tree (United States) The National Christmas Tree is a large evergreen tree located in the northeast quadrant of The Ellipse near the White House in Washington, D.C. Each year since 1923, the tree has been decorated as a Christmas tree. Every early December, the tree is traditionally lit by the President of the United States. Every president since Franklin D. Roosevelt has made formal remarks during the tree lighting ceremony. Since 1954, the event has marked the start of month-long festivities known as the Pageant of Peace. Smaller trees representing the U.S. states, District of Columbia, and the </s> three more modest trees were raised, each decorated in one of the flag's colors. From 1944 until the war's end in 1945, the tree went unlit due to blackout regulations. After the war, the year of darkness was left behind, as six ultraviolet light projectors were employed to make it appear as though the tree's 700 fluorescent globes were glowing in the dark. By the 1950s, workers began using scaffolding to decorate the tree, as larger trees were accommodated. Before the decade was over, the decorating process called for 20 workers and nine days. 1951 marked the first time that
question: when do they put the tree up in rockefeller center