“A Christmas Story” marathon (8 p.m., TBS): We triple-dog dare you to watch all 24 hours


December 24, 2015 at 12:00a.m.

“A Christmas Story” marathon (8 p.m., TBS): We triple-dog dare you to watch all 24 hours of the “A Christmas Story” marathon. Just make sure to drink your Ovaltine first.

“It’s Your 50th Christmas, Charlie Brown” (8 p.m., ABC): Kristen Bell and guests celebrate the animated holiday classic.

TV listings, B6