May 29 — Battle Of Ctesiphon . Julian arrives under the walls of the Sassanid capital and defeats the Sassanid army of Shapur II Of Persia , but is unable to put the city under siege.
June 16 — The Roman army starts its retreat from the Sassanid Empire, suffering attacks from the Sassanid forces.
June 26 — Julian is killed in battle. General Jovian is proclaimed Emperor by the troops on the battlefield.
The Council Of Laodicea , which dealt with constricting the conduct of church members, is held. The major Canon approved by this council was canon 29, which prohibited resting on the Sabbath (Saturday) , restricting Christian s to honoring the Lord on Sunday .
