Question: when do christmas decorations go up in new york 2018?
Answer: Tree Lighting Ceremony November 13: The Swarovski star was raised onto the Tree. December 4: The Tree was lit for the first time on Rockefeller Plaza. December 25: On Christmas day, the lights shine for a full 24 hours. December 31: On New Year's Eve, visiting hours are from 6am-9pm.