Earth Hour
Event date
WWF's Earth Hour is the world's biggest movement to protect our planet.
Every year hundreds of millions of people around the world in more than 7,000 cities in over 180 countries take part in this amazing global conservation movement. People do a wide range of things around the hour to show they care about our planet's future. Millions choose to mark Earth Hour by going 'lights out' for 60 minutes at 8.30pm – a symbolic show of solidarity.