"Earth Hour" calls on families and businesses to turn off unnecessary lights and power-consuming products from 8:30pm to 9:30pm on the last Saturday in March every year......

"Earth Hour" calls on families and businesses to turn off unnecessary lights and power-consuming products from 8:30pm to 9:30pm on the last Saturday in March every year to express their support for actions against climate change. Since its launch in Australia in 2007, it has become one of the largest global voluntary initiatives in the field of environmental protection and climate change.

Significance of Earth Hour 
WWF is calling for planet-passionate people like YOU to take part in Earth Hour — a worldwide show of support for our brilliant planet.

It’s a special event where millions of people around the world will switch off their lights for one hour, to show how much they care about the future of our planet and want to look after it.

While the lights are out, you could chat with friends and family or play games in the dark. Think about what it would be like if this happened every day!

Earth Hour encourages you to think about the amount of energy we use (or waste!) every single day which contributes to our planet heating up — a process known as climate change or global warming.

Sadly, climate change spells bad news for wildlife, as they lose their habitats and face more extreme and unpredictable weather. As WWF put it, there is no planet B, gang!

Nearly 400 landmark buildings, like Buckingham Palace and Edinburgh Castle, will be switching off for Earth Hour. And you can join them, too! 

Last year, around 9 million people took part in the UK alone and this year’s Earth Hour is set to be the biggest yet.

How is Earth Hour celebrated? 
Earth Hour is celebrated by switching off lights for an hour – from 8:30pm to 9:30pm local time – and indulge in activities like reconnecting with nature, cooking meals and spending time with families and loved ones, getting artistic and so on. Governments, companies and environment activists around the world take part in this event.

“Though the Earth Hour is symbolic in nature, but the attention it draws towards our earth and climate is not symbolic. It is real.”