There have been several different calenders in Codex. The first and mostly easily researched is based on the rise of the Ronat Empire, which tracks the events of the western continent. Dates are marked as 'DE', or years distant from the 'Dawn of the Empire'. -4,500 DE * The simulacra known as Horan are created by the Undina. -4,000 DE * The first horan gains sentience and a soul from an experiment performed by a Undina named Etu'An. Calling herself Evonne, she leaves Etu'An and gathers lost simulacra to herself. Her sentience breeds true, and in secret begins to hide intelligent simulacra.