BC & AD

If BC is before christ and AD is after christ what's the time called when he was alive?
Eid break was fun, Went to the tallest building in Saudi Arabia and got a nice view or Riyadh. It was fun, we then prayed on the 77th floor so I can say I have prayed in the highest mosque in the world world. Well there could be one in the Himalayas but since I don't know of any I will say this was the highest in the world. Anyways, gotta get out of work.