answers: a Wednesday after Thanksgiving
context: (2012–present), and Hoda Kotb (2017–present). Tallest Tree on Record 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. </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 </s> Ohio, on the world's largest transport plane. 1999 saw Rockefeller Center's tallest tree, a spruce from Killingworth, Connecticut. In 2001, following the September 11 attacks, the tree was again decorated in hues of red, white and blue. In 2007, the tree went "green", converting to energy-efficient lighting with LEDs. The LEDs use 1,200 fewer kilowatts of electricity per day, enough to power a 2,000-square-foot home for a month. Also since 2007, each year after display, the tree has been milled into lumber and donated to Habitat for Humanity for use in house construction. Since 2011, the tree lighting ceremony has
question: when do they light the tree at rockerfeller center