Friday, March 27, 2009 Earth Hour 2009 takes place Saturday, March 28, 2009 between 8:30 to 9:30 pm local time when communities will participate by turning out their lights starting in New Zealand and progressing along time zones around the world. Earth Hour began as a symbolic initiative against global warming by the World Wide Fund for Nature (WWF). "[It is] The largest demonstration of public concern about climate change ever attempted." Ban Ki-moon, United Nations...
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Businesses and individuals worldwide to turn lights off as part of Earth Hour 2009
July 10, 2020
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