The Age of Chaos

The first known Age, the Age of Chaos, is sometimes also referred to as The Age of Creation. It is said that when this plane of existance was created, gods and goddesses walked the earth, shaping it to their liking, creating life, taking an active part in the life of mortals. This Age ended with the defeat of The Dark One.
No one can say for certain when life as we know it actually began on this plane of existance or what it might have looked like, as the records of this time are scarce. After examining the few texts and still intact structures from this Age, scholars in The Age of Discovery were able to roughly determine the age of said building and texts. Consequently they decided on what their current year is and set the year of the oldest artifact as year one.