Actually, 'El Tigre' and "Danny Phantom" are airing on Nicktoons Network- except for some weird reason, the last "Danny Phantom" episodes aren't in regular rotation like they should be!
As for Cartoon Network: It's doing something really wild on Friday. The network is taking the "Christmas in July" cliche and turning it into a special block of programming that fans know so well. That's right, Christmas-themed episodes of "Ed, Edd, n Eddy,""Billy & Mandy," and "Chowder", along with selected Christmas Specials, will air from 7:00 AM through 7:00 PM Friday! This may be the last major block that would be relevant enough to regain the fans it's been losing as of late.
(Although CN's scheduled airing of 'Bah Humduck! A Looney Tunes Christmas" will go head-to-head against Disney XD's famed 'Super Stack' of "Kid Vs. Kat". And we already know Kat DOMINATES THE TIME PERIODS he appears in.)
Good luck, CN, on Friday.