Santa Monica Firefighters walk down a candle -lit hallway at the Fairmont Miramar Hotel during World Wildlife Fund's (WWF) 'Earth Hour 2009,' on Saturday, March 28, 2009. Earth Hour is a global WWF climate change initiative. Individuals, businesses, governments and communities were invited to turn out their lights for one hour (Earth Hour) on Saturday March 28, 2009 at 8:30 p.m. to show their support for action on climate change. The event began in Sydney in 2007, when 2 million people switched off their lights. In 2008, more than 50 million people, including several Fairmont hotels around the globe, participated. In 2009, Earth Hour aims to reach out to 1 billion people in 1,000 cities.