J.K. Rowling reminded Harry Potter fans that Sept. 1, 2015 was a very important day in the Potter universe: James Sirius Potter’s first day at Hogwarts.
The beloved author tweeted the news early Tuesday morning, asking someone to wish Potter good luck on his first day at school.
http://www.ew.com/article/2015/09/01/jk-rowling-james-potter-hogwarts