No matter where you are in the world, you can make an impact this Earth Hour.
Switch off for an hour
The DNA of the Earth Hour movement. Switch off your lights for an hour on Saturday, March 28, 2020 at 8:30 pm your local time.
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.
2020: The year that counts
2020 presents an unmissable opportunity. In 2020, world leaders will come together during key global conferences and forums to set the environmental agenda for the next decade and beyond. Crucial political decisions will be made on climate action, nature, and sustainable development –- decisions that will directly affect the fate of humanity and our planet for years to come.
With your support, Earth Hour 2020 could be a spotlight moment that puts nature at the center of international conversations. Together, we can speak up and show world leaders and other decision-makers around the globe that nature matters and urgent action must be taken to reverse nature loss.