Earth Hour 2010

• Radiotelevisión Española (RTVE) turned off the lights in their newsrooms and their sets on March 28, 2009 from 8:30 p.m. to 9:30 p.m.
2008
Earth Hour 2008 was held internationally on March 28, 2008 from 8 p.m. to 9 p.m. local time, marking the first anniversary of the event. With 35 countries around the world participating as official flagship cities and over 400 cities also supporting, Earth Hour 2008 was celebrated on all seven continents. Iconic landmarks all around the world turned off their non-essential lighting for Earth Hour, including the Sydney Opera House (Sydney, Australia), Empire State Building (New York City, USA), Sears Tower (now Willis Tower, Chicago, USA), Golden Gate Bridge (San Francisco, USA), Bank of America Plaza (Atlanta, USA), Space Needle (Seattle, USA), Table Mountain (Cape Town, South Africa), the Colosseum (Rome, Italy), Royal Castle (Stockholm, Sweden), London's City Hall (United Kingdom), the CN Tower (Toronto, Canada), SM Mall of Asia, SM Science Discovery Center (Manila, Philippines), Suva (Fiji), Nidaros Cathedral (Trondheim, Norway), The Royal Liver Building (Liverpool, United Kingdom), Petronas Towers (Kuala Lumpur, Malaysia), KL Tower (Kuala Lumpur, Malaysia), Wat Arun Buddhist Temple (Bangkok, Thailand) and the Azrieli Center (Tel Aviv, Israel).