Common Year
From Multiversal Omnipedia
The Common Year is the most common dating convention used on Oerth. The Common Year (abbreviated CY) is dated from the crowning of the Overking in Rauxes, replacing the Oeridian Reckoning calendar across the Flanaess.
Comments
The Multiversal Timeline on this site follows the assumption that 1 CY is around the Earth year AD 1039. This assumption is based on extended ties to Earth's calendar through the Barovian Calendar and After Crowning calendar; more information can be found at D&D Worlds Timeline Conversion.