Earth Hour 2009

Earth Hour is a global event organized by WWF (World Wide Fund for Nature, also known as World Wildlife Fund) and is held on the last Saturday of March annually, asking households and businesses to turn off their non-essential lights and other electrical appliances for one hour to raise awareness towards the need to take action on climate change. Earth Hour was conceived by WWF and The Sydney Morning Herald in 2007, when 2.2 million residents of Sydney participated by turning off all non-essential lights. Following Sydney's lead, many other cities around the world adopted the event in 2008. Earth Hour 2011 took place on March 26, 2011 from 8:30 p.m. to 9:30 p.m., at participants' local time.
2011
In India, the Earth Hour 2011 was held on 26th March 2011 from 8.30 PM to 9.30 PM IST, the Earth Hour 2011 was flagged off by the Delhi Chief Minister Smt.Sheila Dixit and Earth Hour 2011 Ambassador and Bollywood Heroine Vidya Balan in the presence of Mr.Jim Leape, Director General, WWF International.