What is Earth Hour?
WWF’s Earth Hour is an annual global celebration where people switch off their lights for one hour to show they care about the future of our planet.
This year’s celebrations will be on Saturday 25 March from 8.30pm to 9.30pm, but it’s not too late to let us know you took part last year.
It’s a symbolic and spectacular lights out display with a big message – we want to protect the future of our planet!
Since it first began in Sydney Australia in 2007, the number of countries taking part in Earth Hour has grown to an incredible 178 countries and territories – a number that keeps rising every year!
Earth Hour is not about how much energy is saved during the hour. Rather, it’s a chance to put the spotlight on the issues facing the planet, and to inspire millions across the world to live more sustainably.
A brief history of Earth Hour
In the UK, 10.4 million people joined a record 172 countries and territories across the world who celebrated Earth Hour to show they care about our brilliant planet.
© Doru Oprisan
© Vlad Barin / WWF-UK