Uncle Grandpa Day
Uncle Grandpa Day was a special 7-hour marathon that aired on Cartoon Network on Thursday August 21, 2014 from 9:00 AM to 6:00 PM. The marathon featured every single episode of Uncle Grandpa that had been aired up to that point (first 26 episodes). The marathon led up to an all-new half-hour Uncle Grandpa special at 7:30 PM.[1][2]

On April 2, 2015, the marathon aired again from 7:30 AM to 6:00 PM, featuring many episodes and the premiere of the Steven Universe-Uncle Grandpa crossover at 5:30PM. The marathon has also aired in the Asia.



  1. "Uncle Grandpa Day". August 19, 2014. Retrieved on November 4, 2014. 
  2. "CN Schedule August 18-25, 2014". Retrieved on November 4, 2014.