The Rockefeller Center Christmas Tree Lighting Ceremony typically takes place on the first Wednesday in December. The exact date and time may vary from year to year, but it is usually around December 1-5. The tree is lit up with lights and decorations to mark the beginning of the holiday season. It is a popular event in New York City, and many people come to witness the spectacle. The lighting ceremony is typically broadcast on television and radio, and it is also streamed online for those who cannot attend in person.