AD 68  AD 68 (LXVIII) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Silius Italicus and Trachalus, or the start of the Year of the Four Emperors (or, less frequently, year 821 "Ab urbe condita"). The denomination AD 68 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. These are now used throughout the world.