Talk:My Little Pony Equestria Girls: Rainbow Rocks/@comment-24101825-20140814233718/@comment-24791619-20140817154204

We can assume that time is the same as we are used to. There have been suggestions that time may flow differently between the two universes. But with the mirror being open for three days, it was the same three days on either side of the mirror.

In the past a 'moon' was equivalent to a month. Therefore, 30 moons would be about 2 and a half years.

By the by, the Apple Family Reunion would be every 8 years and 3 months.