Home > About Earth Hour > See who has signed up

See who's signed up to support Earth Hour

As the clock ticks down towards the big switch-off:

We want a billion people around the world to switch off their lights for WWF’s Earth Hour on 27 March.

Sign up
Please join them by signing up, spreading the word and helping us make this the biggest mass participation event ever!



Countdown to Earth Hour


Earth hour 2010

Latest sign ups