In Western Zerith, the most commonly used calendar was implemented by Erste Nerin IV, an Emperor of the Second Imperium. It was said to have been created by a council of Court advisers. The calendar is divided into four seasons of three 30-day months each, separated by a day-long holiday that is not part of any month. There is another holiday day to start the year (which immediately follows Year’s End Day).
Holiday: New Year’s Day
Holiday: Winter’s Eve
Holiday: Sun Day
Holiday: Year’s End Day
Years are counted from the founding of the First Zerithian Empire, and are denoted with the initials IY, for Imperial Year.
Before the founding of the (First) Zerithian Empire, western peoples used a calendar based on the Wheel of Portents, a cycle of years assigned mystical significance. Each year was broken into four seasons, and each season into halves (dubbed Early and Late by modern scholars).