At 8:30PM local time, wherever you live on planet earth. Saturday March 28, 2009
Earth Hour is just where you turn off all the lights in your house for an hour! 8:30 to 9:30 PM your local time. This is the website. And here's the wikipedia page, if you want to learn more about it. http://en.wikipedia.org/wiki/Earth_Hour
The first ever Earth Hour was in Sydney, Austrailia in 2007. About 2.2 million households and businesses participated! Many other cities around the world adopted the event in 2008. About 36 million people participated in Earth Hour 2008.
So what do you think? Can you turn off all your lights for just one hour to help our earth? Spread the news and tell everyone you know about Earth Hour!