Dating

Human 764, unification of Gilnas, other systems fell out of use centuries ago.
Elven 4567, earliest records of Ammangoan
Dwarven Regnal (think Japan), also traditional system from legendary first Emperor, Ironhand 9879.
Orcish N/A, too many debates
Draconic 17765, birth of the Dragon King, commonly used as a reference point.

 

January - Vakop
February - Pidn
March - Dewns
April - Awop
May - Ioz
June - Slipens
July - Juluxis
August - Erot
September - Striarf
October - Rireg
November - Eam
December - Bryup