Board Thread:Lore Discussion/@comment-13446185-20130814010604/@comment-95.149.28.130-20140618140138

It would make sense if the dragon war ended with the start of the 1st era since in the tale of the tongues song it says that the dragon's defeat 'ushered in a new age' which would explain why they started using a numbering system for their eras after that and also a new era is usually triggered by a large change in the balance of power, commonly concerning empires like the end of the Reman empire, the start of the Septim empire and the end of the Septim dynasty