Earth Hour

History

On Earth Hour hundreds of millions of people, organizations, corporations and governments will come together to make a bold statement about their concern for climate change by doing something quite simple—turning off their lights for one hour. Earth Hour symbolizes that by working together, each of us can have a positive impact in the fight against climate change, protecting our future and that of future generations.

Set Your Clock

On March 27th at 8:30 p.m. local time, Earth Hour will cascade around the globe—from time zone to time zone—uniting the planet under a single, simple, call to action.