<P> 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 tree lighting ceremony is aired at the end of every broadcast, following live entertainment and the tree is lit by the current Mayor of New York City and special guests . An estimated 125 million people visit the attraction each year . </P> <P> The tree, usually a Norway spruce 69 to 100 feet (21 to 30 m) tall, has been a national tradition each year since 1933 . The 2018 Christmas Tree Lighting takes place on November 28, 2018; the tree will remain on display until January 7, 2019 . </P>

When do they light up the tree in rockefeller center