<P> Earth Hour is a worldwide movement organized by the World Wide Fund for Nature ( WWF ) . The event is held annually encouraging individuals , communities , and businesses to turn off non-essential electric lights for one hour , from 8 : 30 to 9 : 30 p.m. on a specific day towards the end of March , as a symbol of commitment to the planet . It was started as a lights - off event in Sydney , Australia , in 2007 . Since then , it has grown to engage more than 7,000 cities and towns across 172 countries . </P>
<P> Earth Hour is a worldwide movement organized by the World Wide Fund for Nature ( WWF ) . The event is held annually encouraging individuals , communities , and businesses to turn off non-essential electric lights for one hour , from 8 : 30 to 9 : 30 p.m. on a specific day towards the end of March , as a symbol of commitment to the planet . It was started as a lights - off event in Sydney , Australia , in 2007 . Since then , it has grown to engage more than 7,000 cities and towns across 172 countries . </P>
what is the aim of celebrating earth hour
what is the aim of celebrating earth hour
to turn off non-essential electric lights for one hour , from 8 : 30 to 9 : 30 p.m. on a specific day towards the end of March , as a symbol of commitment to the planet
to turn off non-essential electric lights for one hour , from 8 : 30 to 9 : 30 p.m. on a specific day towards the end of March , as a symbol of commitment to the planet