Another thing I found curious from the Frog Days of Summer FATE.

When abandoning their Eorzean settlement, the Sharlayans left more than their tomes and their tuffets, they left their poroggo familiars, who now, after waiting patiently for their masters to return home, have decided it is time to release over thirty summers of pent up rage.
I was under the impression that the evacuation took place fifteen years ago. Does Eorzea have two summers a year, or are there some other details that I am unaware of?