It's Always Sunny in Philadelphia (sometimes referred to as
Always Sunny or simply
Sunny) is an American television
sitcom that premiered on
FX on August 4, 2005. It moved to
FXX from the ninth season. It was created by
Rob McElhenney, who developed it with
Glenn Howerton. It is executive produced and primarily written by McElhenney, Howerton, and
Charlie Day, all of whom star alongside
Kaitlin Olson and
Danny DeVito. The series follows the exploits of "The Gang", a group of self-centered friends who run the
Irish bar Paddy's Pub in
South Philadelphia.