This first website, History.com, does an over view of what the plan was from the start with the Japanese's plan to attack peral harbor. It also talks about why the Japanese decided to go with this plan and also what Nazi Germany thought of it. Germany, at the time, did not know about the attack until it happened. In fact Germany didn't know where Pearl Harbor was. "When news of the Pearl Harbor attack arrived at Hitler’s headquarters, one of the assembled Nazi generals embarrassingly asked the rest of the group where Pearl Harbor was. Nobody was able to answer him and a world map had to be consulted."
"Hitler did not know of the Pearl Harbor plan beforehand. When informed in his headquarters on the evening of Dec. 7." This quote from The CS Monitor.com proves the point that Pearl Harbor was all Japan's idea from the start. Hitler and Germany had no idea when this was going to happen or if it was even going to be acted upon.
"No, Hitler nor Ribbentrop nor any of the high ranking Nazi's had inside knowledge of the pending sneak attack on Pearl Harbor." This simply restates the same fact that Germany had no idea how when the sneak attack on Pearl Harbor would occur. I guess you could it was