Calendar year
AD 68 (LXVIII) was a leap year starting on Friday 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. 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.