"best day ever" is the first part of the twentieth episode of the fourth season of "spongebob squarepants". it first aired on television on nickelodeon in the united states on november 10, 2006 as a part of the television marathon called "the best day ever marathon". 6.7 million people watched the episode when it was first shown on television. in the episode, spongebob wants to have a perfect day, but it does not go as planned. however, he solves his friends' problems without knowing it. when he finds out, he learns that he really did have the best day ever.