Mr. Rogers' Neighborhood

If you were born in the 90's or 00's you might remember Mr. Rogers. He sang the song "It's a Beautiful in The Neighborhood", thats the way people remember it at least. The title and the way the song went was "It's a beautiful day in this neighborhood". Most if not all of the people who watched the show when they were younger remember the instead of this. Many people do speculate that we could of went into a parallel universe and "the" changed into "this". Everyone has mixed emotions about this Mandela effect. Was it ever "the" or was that just what everyone thought?