<Tr> <Th_colspan="2"> External links </Th> </Tr> <Tr> <Td_colspan="2"> Website </Td> </Tr> <P> It's Always Sunny in Philadelphia is an American dark comedy television series that first premiered on FX on August 4, 2005 and has since moved to FXX beginning with 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 debauched, self - centered friends who run the Irish bar Paddy's Pub in South Philadelphia . </P> <P> On April 1, 2016, the series was renewed for a thirteenth and fourteenth season, which will tie it with The Adventures of Ozzie and Harriet as the longest running (in number of seasons) live - action sitcom in American TV history . </P>

When did it's always sunny in philadelphia first air