• Adventure Time: “Belly of the Beast” & “Mystery Train” – 8:30 a.m.: In order to cure the stomach ache of a giant, Finn & Jake must break up a big party happening in his belly. Following that, Jake takes Finn on a train ride for his birthday, but things take a turn when they find themselves in a high speed whodunit!
• Chowder: “The Birthday Suits” & “Apprentice Appreciation” – 10 a.m.: Chowder and the gang must make a special delivery to a food suit-themed party. However, when the dish spills over, shrinking their fruit costumes, they must find new costumes before making it to the party. Then, It's Apprentice Appreciation Day, and Chowder is looking forward to his annual Slawberry Cake. But when Mung hears that Endive is throwing a huge party for Panini, he decides to throw Chowder a bigger party with ice sculptures, a food animal circus, and no slawberry cake!
• Foster’s Home for Imaginary Friends: “I Only Have Surprise for You” – 12 p.m.: Bloo, Wilt & Coco convince the rest of the Imaginary Friends and Frankie to plan a big surprise birthday party for Mac. However Mac wants no part of it for fear that Bloo will somehow humiliate him. Are Mac’s fears justified in the end?
• The Powerpuff Girls: “Birthday Bash” & – 3 p.m.: Blossom, Buttercup and Bubbles are excited to celebrate their birthday, but are unaware that especially dangerous and destructive “gifts” await them from Townsville’s arch enemies Mojo Jojo, Princess, Him and The Amoeba Boys. Afterward, the Powerpuff Girls invite their friends from Pokey Oaks Kindergarten to their house for a slumber party, but do not realize that Mojo Jojo plans to sneak into the house as Mojesha, so he can destroy their plans.
• Codename: Kids Next Door: “Operation C.A.K.E.D” & “Operation P.A.R.T.Y.” – 4 p.m.: The Kids Next Door attempt to stop a birthday party for their arch-enemies, the Delightful Children From Down The Lane. But a big surprise and a monstrous guest stands between them and the greatest birthday cake ever. Later on, it's Kuki's birthday, and girls including Numbuh 4 are invited! But what happens if a certain girl tries to sneak out the prized Rainbow Monkey cake?
• Regular Show: “Free Cake” & “Party Pete” – 5:30 p.m.: Mordecai and Rigby want some cake, but lack the money to buy it. They find out its Skip’s birthday and try to throw him a surprise party, but as usual, things go terribly awry. Next, Mordecai and Rigby look for help when their awesome house party turns lame.

Original Music Video Pays Tribute to Cartoon Network’s First 20 Years

At 6:58 p.m. ET/PT, Cartoon Network will conclude its birthday-themed programming with the world television premiere of an original music video produced especially to celebrate the network’s 20 years of animated entertainment. Featuring original music by Mad Decent and original animation created by London-based ILOVEDUST, this two-minute music video spotlights nearly 100 cartoon character all-stars who’ve contributed to Cartoon Network’s remarkable legacy. Shortly following its premiere, the music video will be made available for free download at iTunes, Xbox and Amazon.com, as well as subsequent viewing at CartoonNetwork.com, Cartoon Network’s YouTube channel at www.youtube.com/user/cartoonnetwork and Cartoon Network’s Facebook page.