Founder's Day was a holiday celebrated in Great Glade in the Third Age of Flight. Debates were held on Founder's Day at the Hall of Whispers, and they could last for many hours. In The Immortals, Cassix Lodestone had to sit through a particularly long debate to get the chance to talk to Quove Lentis.
Behind the Scenes
Fans of the Edge Chronicles have declared February 18th to be "Earth Founder's Day," because February 18th, 2008 was the day the Edge Chronicles Wiki was created.