Talk:My Little Pony Equestria Girls: Rainbow Rocks/@comment-24649798-20140307021720/@comment-11677914-20140315091933

It was 30 moons. Anyway...

FiM doesn't seem to have a real "year". In "Princess Twilight Sparkle - Part 2" it's mentioned that last celebration, Celestia was reunited with her sister. "Last celebration", that was "Friendschip is Magic, Part 2". So between the begin of season 1 and season 4, only 1 year had past. Unless Equestria has years that last longer. With that, it could be that 1 year in Equestria isn't the same time in the human world, so the portal might open already a year after it opened last time (30 moons in a year), while it's in the human world the 2,5 year (30 moons, give or take a month)