On what day of what month did the episode of "SpongeBob SquarePants" first air in which there first appeared the character voiced by an actor who also played Michael "Dauber" Dybinski on the sitcom "Coach"?
May 1
Title: SpongeBob SquarePants: Original Theme Highlights
Passage: SpongeBob SquarePants: Original Theme Highlights is the first album of songs played on the Nickelodeon TV series "SpongeBob SquarePants".  It includes tracks sung by the cartoon's characters: SpongeBob SquarePants, Sandy Cheeks, Patrick Star, Squidward Tentacles, and Plankton.  Its total running time is 9 minutes and 9 seconds, spanning seven tracks.
Title: Patrick Star
Passage: Patrick Star is a fictional character in the American animated television series "SpongeBob SquarePants".  He is voiced by actor Bill Fagerbakke, who also voices numerous other characters on the show.  Created and designed by marine biologist and cartoonist Stephen Hillenburg, the series creator, Patrick first appeared on television in the show's pilot episode "Help Wanted" on May 1, 1999.
Title: Bill Fagerbakke
Passage: William Mark "Bill" Fagerbakke ( ) is an American actor and voice actor.  He is best known for his long-running roles as Patrick Star in the animated series "SpongeBob SquarePants" and Michael "Dauber" Dybinski on the sitcom "Coach".  He also appeared in 12 episodes of the sitcom "How I Met Your Mother" as Marshall Eriksen's father Marvin.
Patrick Star Bill Fagerbakke