“ABC World News” (5:30 p.m., ABC): It’s sign-off time for Charles Gibson,

“ABC World News” (5:30 p.m., ABC): It’s sign-off time for Charles Gibson, presiding over his final edition of the “ABC World News” tonight. Gibson, who has been part of ABC News for 34 years and lead anchor since 2006, will hand the baton to Diane Sawyer.

“Frosty the Snowman” (8 p.m., CBS): Holiday mainstay “Frosty the Snowman” is back once again to melt your heart — if he doesn’t melt first. The venerable special airs just before “Frosty Returns.”