Time, the Seasons and how it both are marked
Currently the year is marked as 520 AC, After Cataclysm. Each year is 360 days, and is measured (by the Society’s New Reckoning) as 4 seasons, being Spring, Summer, Autumn and Winter. Though there is no evident sun, merely light, and no evident moon or stars, (though a dim starlight glow can happen on cloudless nights), each season is steady, with hot summers and bitterly cold winters.
Each season is named as having 3 parts, with Fore, Middle and Aft being their names; a person might say they were born in the Aft of Autumn 500AC for example. Birthdays are not celebrated individually, with everyone accounted a year older on the first Fore Day of Spring, a time of holidays and celebrations (for many if not all) marked with gift giving, feasting (if possible) and in some lands a time for wooing and weddings to happen.
The New Reckoning was created by the Society in the years after the cataclysm as one of its earliest exercises of control and setting of order, with the removal of weekdays and their names, now long expunged from memory. The Society preaches that any more exact time keeping or marking the passage of the days and years is not in humanity’s best interests, and so it has been for centuries.