 By killing the monster, Apollo rendered the area safe for human beings and established his ownship of the site.The historical timeframe of the Pythian Games started in 582 BC, when the administration of the Games was handed over to the Delphic Amphictyony, a council of twelve Greek tribes, at the end of the First Sacred War.As of that time, they did not take place every eight years as in the past, but every four years, two years before and after the Olympic Games, presumably at the end of August.