This is a reference of ages of the Thilean Epoch. In their tongue the ages are called Elds and end with a significant supernatural, cataclysmic, or cultural event, claimed by the HeahÐrág, arch-historian.
The seven Elds of Thil:
Eldógæn- The Age of Creation/Order/Peace (7days)
Eldguðrúl- The Age of Malemm’s wrath (1000 years)
Eldúsóls- The Age of the Mourning (3 years)
EldÐekt- The Age of Hope (127 years)
Eldhfec- The Age of Chaos (321 years)
Eldiláel- The Age of Unity(94years)