Earth Hour, 27 Mar

On Saturday, 27 March at 8:30 p.m. local time, Earth Hour, one of the largest global grassroots movements for the environment, will virtually bring together millions of people, businesses and leaders from around the world to shine a spotlight on the urgent need to address nature loss and climate change. With evidence pointing towards a close link between nature's destruction and rising incidences of infectious disease outbreaks like COVID-19, Earth Hour 2021 will unite people online to speak up for nature. This global event comes ahead of key moments when world leaders will take critical decisions on nature, climate change and sustainable development, setting the course of our future.

Let's get the world watching.

Let's get the world talking.

History of the Hour

Started by WWF and partners as a symbolic lights-out event in Sydney in 2007, Earth Hour is now one of the world's largest grassroots movements for the environment. Held every year on the last Saturday of March, Earth Hour engages millions of people in more than 180 countries and territories, switching off their lights to show support for our planet. 



But Earth Hour goes far beyond the symbolic action of switching off - it has become a catalyst for positive environmental impact, driving major legislative changes by harnessing the power of the people and collective action.

 

Earth Hour is open-source and we welcome everyone, anyone, to take part and help amplify our mission to unite people to protect our planet.