March 27,2010. Turning off of lights for an hour saves the world from destruction. 400 Million cities and reaching more than a billion people around the globe support this advocacy of saving our planet from global warming. It started in a single city in Australia (2007) and in 2008 it became emerges and known to be the EARTH HOUR. In 2009 it became the advocacy of the world and is now the symbol of hope for the future of the planet. 60 minutes is something big for the planet. Help support advocates against global warming and the preservation of our planet. Save Mother Earth. Support Earth Hour.