Earth Hour is a global initiative in partnership with WWF. Individuals, businesses, governments and communities are invited to turn out their lights for one hour on Saturday March 26, 2011 at 8:30 PM to show their support for environmentally sustainable action. The event began in Sydney in 2007, when 2 million people switched off their lights. By 2010, Earth Hour had created history as the largest voluntary action ever witnessed with participation across 128 countries and every continent, including the world’s most recognized man-made marvels and natural wonders in a landmark environmental action. Earth Hour Philippines debuted in 2008 and has since grown into one of the largest annual events in the country, with over 15 million participants in 2010 alone.