Logo text John Oliver usually appears on TV screens late at night, but the Last Week Tonight host has long harbored a desire to appear on daytime TV. Later this week, he will. Oliver will appear in a “significant” three-episode guest role on ABC’s General Hospital , he revealed on Sunday’s episode. His first appearance is scheduled to air Thursday, with his other episodes set for Friday and Monday, July 6. The role came about after Oliver pleaded to be cast on a daytime soap on Last Week Tonight’ s March 8 episode. After noting that ESPN’s Stephen A. Smith has appeared on and off on General Hospital for years, Oliver said, “To all the soap operas out there, let me say this: I am officially offering myself to you.…