Turn off the lights for one hour on Saturday, March 22 at 8:30 PM during WWF-Earth Hour 2025!

Can one hour change the world? Impossible. It’s only one o’clock. But what if millions of people around the world did something good for nature and our future for one hour? One hour in which millions of people worldwide take action — from Sydney to Scheveningen. One hour when the lights go out everywhere — from the Euromast to the Eiffel Tower. One hour for more nature. We face big challenges but together we stand strong. Can one hour change the world? It’s a start and it’s up to us.

In 2024, the Dutch celebrated Earth Hour and gave many millions of people worldwide one more hour of nature.

Participating is simple: you can simply turn off your lights at home and join a global movement. With these tips and home activities you can make it even more fun (with children)!

Also join in: turn off the lights for one hour on Saturday, March 22 at 8:30 PM during WWF-Earth Hour 2025.