Earth Hour 2009 is an international campaign calling for serious and sustained action on global warming.
The campaign is requesting all the households and establishments to turn off non-essential lights from 8:30PM to 9:30PM (Philippine time) on March 28, Saturday, as an expression of support.
It hopes to involve at least 10 million Filipinos and 500 businesses in key cities across the Philippines. Globally, it aims to reach one billion people in 1,000 cities all over the world.
The Earth Hour was launched in Australia on March 31, 2007. The event mobilized 2.2 million people and 2,100 businesses in Sydney to turn off their lights for one hour.