The City’s annual Christmas Tree Lighting Ceremony will take place tonight, December 6 at 5:30 p.m. on the City Hall Concourse, followed by a meet and greet with Santa Claus in the Somerville High School Highlander Café (atrium entrance). For the first time, this event will also include a ceremonial lighting of a Hanukkah Menorah, which will remain on the concourse throughout the season.