Summer Fridays was a programming block on Cartoon Network, and the temporary replacement of Cartoon Cartoon Fridays. It was the marquee night for premieres, new episodes, and re-runs of the network's Cartoon Cartoons during the summer of 2003. It was shown on Fridays from 7:00 P.M. to 1:00 A.M., and ran from May 23, 2003 to August 29, 2003.