Well, talking about doomsday...Nostradamus predicted the end of World...

The year 1999, seventh month,
From the sky will come a great King of Terror:
To bring back to life the great King of the Mongols,
Before and after Mars to reign by good luck.

The present time together with the past
Will be judged by the great Joker:
The world too late will be tired of him,
And through the clergy oath-taker disloyal.

The year of the great seventh number accomplished,
It will appear at the time of the games of slaughter:
Not far from the great millennial age,
When the buried will go out from their tombs.

Long awaited he will never return
In Europe, he will appear in Asia:
One of the league issued from the great Hermes,
And he will grow over all the Kings of the East.

No one actually understood his predictions...but maybe he was predictiong the end of Eorzea? When will 1999 be at eorzean calender? =P