Context: The seventh season of the animated television series My Little Pony: Friendship Is Magic, developed by Lauren Faust, is currently airing on the Discovery Family channel in the United States. The series is based on Hasbro's My Little Pony line of toys and animated works and is often referred by collectors to be the fourth generation, or "G4", of the My Little Pony franchise. Season 7 of the series premiered on April 15, 2017 on Discovery Family, an American pay television channel partly owned by Hasbro.

Question: when does my little pony season 7 air?
Steam of consciousness below:
To answer this question, we should know that: Season 7 of the series premiered on April 15, 2017 on Discovery Family, an American pay television channel partly owned by Hasbro.
So, the answer is April 15 , 2017.