The Atharon Calendar
Since the beginning of time, numerous calendars have been used to track the passing of seasons, but the one that ultimately prevailed was the one invented on Rhea, due to its unrivaled precision and ease of use. Unfortunately, in the earliest of times the people of Rhea didn't keep any track of the passing years simply because, for them, only the passing of days and months were considered relevant. It is therefore impossible to establish with certainty when this calendar was originally conceived.
The Atharon Calendar is divided into even months. Every year has exactly 13 months and every month has exactly 28 days, with a year lasting 364 days. Seasons vary from region to region however there is a high degree of correlation between the calendar of nature and the calendar of sentience. The defeat of the legendary figure Korwin marked the beginning of a new age and so stands as Year Zero of the atharon calendar, as well as the beginning of the tracking of history in written form. The most significant years are as follows: