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. 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.

In the U.S. where the impacts of climate change are already being felt, Earth Hour sends a message that Americans care about this issue and stand with the world in seeking to find solutions to the escalating climate crisis because if we don’t, who will.

Participation is easy. By flipping off your light switch on March 27th at 8:30 p.m. local time you will be casting your vote for action on climate change. Use this website to find out what else you can do to get involved including leading the Earth Hour movement in your community.