The Best Day Ever

Unreleased "The Best Day Ever" is the second half of the tenth episode of season 16. It is the season finale of Season 16 and it will air on an upcoming date along with "So Funny I Forgot to Laugh."

Synopsis
On a day in the park, Arthur and his friends recount what happened on their most favorite days ever. Buster's is the day he spent playing checkers with Arthur after returning to Elwood City from living with his father; George's is the day he gained confidence after his puppet Wally broke and he had to read a poem by himself; Binky's is the day when he learned to stop his adopted baby sister Mei-Lin from crying; and Sue Ellen's is the day when Arthur found her personal diary. When asked, Arthur says he can't think of one, but after Sue Ellen points out that Arthur was involved in all of their stories, he then calls the day his favorite for spending it with his friends.

Trivia

 * This episode's title is similar to the SpongeBob SquarePants episode "Best Day Ever".