National Harbor Tree Lighting 2024 Calendar. National harbor’s gigantic tree will now illuminate evening skies with a tree lighting show every 30 minutes, starting at sunset (around 5:30 p.m.) through 9 p.m. The holiday season comes alive at national harbor with festive events, memorable experiences, delectable bites and gifts for everyone.

Join us saturday nights from. Gather with your friends and neighbors to sing carols, enjoy the lighting of the.