Year 1423 (MCDXXIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. Events of 1423 April 27 – Hussite Wars – Battle of Horic: The Taborites decisively beat the Utraquists. July 31 – Hundred Years' War- Battle of Cravant: The French army's defeated at Cravant on the banks of the river Yonne. According to the 1421 theory, Zheng He's fleets return to China. Births May 30 – Georg Purbach, German astronomer and mathemat… (More on 1423)