7 p.m. on CW Christmas Around the World

Dean Cain and Laura McKenzie host this new one-hour yuletide special that showcases how Christmas is celebrated around the world, by highlighting traditions that reach back into ancient times and extend into the modern day. That overview, not surprisingly, also extends to what various cultures have come to regard as “Christmas foods.”

7 p.m. on CMT

Crossroads Multi-platinum singer-songwriter Brett Young returns to the Crossroads stage for the first Christmas-themed episode in this acclaimed music series. In this one-hour offering, Young appears alongside an all-star lineup of friends and collaborators including Boyz II Men, Chris Tomlin, Colbie Caillat, Dann Huff, Darius Rucker, David DeGraw and Maddie & Tae. Songs include seasonal highlights from Young’s first holiday album, “Brett Young & Friends Sing the Christmas Classics.”

8 p.m. on CMT

CMT a Tennessee Kind of Christmas A superstar lineup of country music greats including Amy Grant, Billy Ray Cyrus, Pam Tillis, Sara & Olivia Evans, Steve Wariner, Tracy Lawrence and Wynonna celebrate the Christmas season from several iconic venues and outdoor locations in and around Nashville, Tenn., in this new one-hour special. In addition to performing beloved songs of this festive season, the stars also share stories of their personal Christmas traditions and favorite holiday memories.

9 p.m. on SYFY Intergalactic

After escaping into space, Ash (Savannah Steyn) finds herself given the cold shoulder by the rest of the crew over her perceived betrayal of Dr. Grieves. Meanwhile, Candy (Eleanor Tomlinson) is devastated over her mother’s death. After they are infected by a parasite that turns its victims temporarily into zombies, however, the crew is forced to set aside any differences and work together. Fortunately, Candy discovers Ash has a natural immunity to this threat, providing the key to a cure.

9 p.m. on TNT NHL Hockey

Two Western Conference teams off to lukewarm starts hit the ice tonight in Sin City, where Chandler Stephenson and the Vegas Golden Knights play host to Miro Heiskanen and the Dallas Stars. The defending Stanley Cup champion Golden Knights got the better of the Stars in these teams’ first meeting in October, when Evgenii Dadonov’s goal in overtime lifted Vegas to a 3-2 win over Dallas.