This is the first calendar ever used, planet-wide, on Menelon. 580 years before the story of "The Raven and the Iris" begins, trade and political relations among the nation-states of Vin-Nore, Vin-Llamaz, Cascadia, Sudaan, Balkland, and Surmeidan led to the establishment of the Menelon Common Calendar by treaty, the first of its scope in the history of the world. Bak-Tiar and Jarlstadt were not signatory to the treaty, but adopted the new dating conventions as they were used by all their major trading partners.
For visual convenience, months in the winter season are colored blue, spring in green, summer in yellow, and autumn in gold/orange. The decision to put the festival weeks after the first month the season is to account for solstice and equinox celebrations in the northern hemisphere.
The years before the beginning of the common calendar may be designated by the old, local calendars. Where conversions are useful, scholars prepend the BCC to indicate the date was "before (the) common calendar."
Editor's note: In the need to create a coherent timeline, and for the convenience of our readers, all stories from the world of Menelon use this dating convention even if the sub-setting officially doesn't. If there is no designation by a year/date, it's assumed to be a MCY date. For consistency's sake, writers who wish to place their stories before the MCC treaty will still have to provide a common calendar (BCC) designation for their dates.