thumb|The northern and eastern frontiers of the Roman Empire in the time of Constantine, with the territories acquired in the course of the thirty years of military campaigns between 306 and 337. __NOTOC__ Year 324 (CCCXXIV) was a leap year starting on Wednesday in the Julian calendar. At the time, it was known as the Year of the Consulship of Crispus and Constantinus (or, less frequently, year 1077 Ab urbe condita). The denomination 324 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
thumb|The northern and eastern frontiers of the Roman Empire in the time of Constantine with the territories acquired in the course of the thirty years of military campaigns between 306 and 337 __NOTOC__ Year 324 (CCCXXIV) was a leap year starting on Wednesday in the Julian calendar At the time it was known as the Year of the Consulship of Crispus and Constantinus (or less frequently year 1077 Ab urbe condita) The denomination 324 for this year has been used since the early medieval period when the Anno Domini calendar era became the prevalent method in Europe for naming years