Nickelodeon’s Valentine’s Day preschool marathon is as follows (all times are ET/PT):
9:00 a.m. - Dora the Explorer “The Grumpy Old Troll Gets Married” PREMIERE
The Grumpy Old Troll is getting married to Petunia (voiced by Carol Kane) and everyone is a part of the wedding. Everything’s almost ready, except the Grumpy Old Troll forgot to pick up the rings from his Grandma’s house. Dora and her friends must dance the “Troll’s Happy Dance” to make it across the Flowery Garden; count with the Wedding Bells and find the rings at Grandma’s house so the Grumpy Old Troll can have his wedding.
9:30 a.m. – Dora the Explorer “Te Amo”
El Mago, a mean magician, casts a spell on King Popo and Queen Maria, turning them into mountains. To break the spell, they have to fix a broken bridge and find their way through a maze of rocks. Then they have to climb the mountains and call to each other, “Te Amo!”
10:00 a.m. – Go, Diego, Go! “Sammy’s Valentine”
It’s Valentine’s Day and all the animals are celebrating by giving Valentine flowers and fruit to their loved ones. Little Sammy the Sloth wants to deliver a special V-day present to his friend Lulu the Sloth, but he must get to her before the sun sets. Diego and Sammy hang glide from the tall cliff, swim quickly past the caimans to finally reach Lulu at the Trumpet Tree.
10:30 a.m. – Max & Ruby “Max’s Valentine’s Day
Valentine's Day is a busy time for Ruby and Louise who make special Valentine cards for all their Bunny Scout friends. Ruby gives Max the important job of taking her Valentines to the mail box and Max ends up making a special Valentine delivery of his own.
11:00 a.m. – Bubble Guppies “Bubble Puppy”
Gil wants to adopt a puppy, but the Bubble Guppies have to learn how to take care of a pet before he can bring the little guy home.
11:30 a.m. – Team Umizoomi “Special Delivery”
Team Umizoomi needs to help their friend Anthony who forgot to put stamps on his Grandma's "Just Because I Love You" card. The Umi Team must use their math skills to determine the correct numbers of stamps to apply to the package, identify the correct zip code written on the mail truck, and find the correct house by counting backwards.
12:00 p.m. – Dora the Explorer “The Grumpy Old Troll Gets Married” ENCORE
12:30 p.m. – Dora the Explorer “Te Amo” ENCORE
1:00 p.m. – The Wonder Pets! “Save the Lovebugs/Save the Skunk Rocker”
The Wonder Pets travel to the Florida Everglades to reunite a pair of quarreling Lovebugs on Valentine's Day. / The Wonder Pets get a call from Manchester, England where a Skunk Rocker can’t find a band to play with him.
1:30 p.m. – The Backyardigans “Special Delivery”
Tasha, Pablo, and Uniqua are tough leather-wearing bikers who are good to the bone. Set to a Norteno music soundtrack, the motorcycle trio drives through the desert and stops at a mailbox to drop off Valentine’s Day cards. When a mailman played by Tyrone loses his mailbag, a zany chase ensues as Tasha, Pablo and Uniqua try to return the bag so that everyone receives their Valentine cards.