Earth Hour started in 2007 in Sydney, Australia when 2.2 million homes and businesses turned their lights off for one hour to make their stand against climate change.

A year later, Earth Hour had become a global sustainability movement with more than 50 million people across 35 countries participating. In March 2009, over 4000 cities in 88 countries officially switched off to pledge their support for the planet, making Earth Hour 2009 the world’s largest global climate change initiative.

Earth Hour 2010 takes place on Saturday 27 March at 8.30pm (local time) and is a global call to action to every individual, business and community throughout the world. It is a call to stand up, to take responsibility, to get involved and lead the way towards a sustainable future. Iconic buildings and landmarks across the world will stand in darkness. People across the world from all walks of life will turn off their lights and join together in celebration and contemplation of the one thing we all have in common – our planet. 

Why get involved?

Put simply, because our future depends on it!

Earth Hour has done a lot to raise awareness of climate change issues. But there’s more to it than switching off lights for one hour once a year. It’s all about giving people a voice on the future of our planet and working together to create a sustainable low carbon future for our planet.

How do I get involved?

There are 3 Steps to getting in on the action:

1. Join Earth Hour

Sign up now to become part of the Earth Hour movement, add yourself to the map and receive email updates with all the latest Earth Hour news.

2. Show your support

Whether you are an individual a business a school or a city you can show your support by turning off your lights for Earth Hour, 8.30PM Saturday 27 March 2010. Check out the other ways that you can show your support.

3. Spread the word

Get the word out: tell your friends and family about it! For a fun way to show your support for Earth Hour right now click here to make a colourful lantern online and send a picture of it to your friends.
Your Earth Hour lantern is a symbol of hope and represents your support for a sustainable future.