What was Earth Hour 2009?



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    Earth Hour 2009 was a global event on the last Saturday in March, during which people all around the world turned off all non-essential electrical appliances for one hour (between 8:30 and 9:30 p.m. local time). The even was organized by the World Wildlife Fund to raise awareness about the need to start cutting back electricity usage in order to combat global warming. Several broadcasting companies participated in addition to individuals.

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