We believe that great things can be achieved when people come together for a common cause. So does Earth Hour. On Saturday, March 31 at 8:30PM, they invite you to celebrate your action for the planet with the people of world by switching off your lights for an hour.

From its inception as a single-city initiative – Sydney, Australia – in 2007, Earth Hour has grown into a global symbol of hope and movement for change. Earth Hour 2011 created history as the world’s largest ever voluntary action with people, businesses and governments in 135 countries across every continent coming together to celebrate an unambiguous commitment to the one thing that unites us all — the planet.

Visit the official Earth Hour website to find out more.