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An Hour that could change decades

Every year, at 8:30 pm on the last Saturday of March, millions of people across the world show their support for our planet, raising awareness of nature loss and climate change - the two biggest threats facing our one home. 

But Earth Hour is more than just an Hour for the planet - it's a movement for our future

And it's more than just a symbol of support - it's a catalyst for urgent change amidst one of our most crucial years yet. 


Learn more

Watch highlights from 2021
EH2021 - OTN Infographic_social cut


Earth Hour has always drawn its power from the people - and this year was no exception. We showed that despite the physical distance, we were still able to unite digitally to speak up for nature louder than ever. Taking place just a few months before crucial climate and nature conferences in the months ahead, Earth Hour sent an unmissable message to world leaders that millions of people around the globe demand urgent action in tackling our planet’s biggest environmental challenges.

Watch this year's highlight video

Read the full report

earth hour before after2


Over the years, you've switched off your lights at home, turning entire streets, buildings, and city skylines dark - an unmissable sight that drew public attention to nature loss and the climate crisis.

This year, we invite you to spread the same message and re-create the same unmissable sight online by taking part in our first-ever Earth Hour Virtual Spotlight. Let's get the world watching. Let's get the world talking

Learn more


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