“It’s Always Sunny in Philadelphia,” which celebrates the 20th anniversary since its premiere episode this year, stars Rob McElhenney, Charlie Day, Glenn Howerton, Kaitlin Olson and Danny DeVito.

At long last, “It’s Always Sunny in Philadelphia” has set its Season 17 premiere date. The gang will return on FXX on July 9 with the first two episodes of this new season. Season 17 will include the ...