KOHIMA, MARCH 18 (MExN): The Nagaland State Power Department has urged consumers to switch off non essential lights and other electricity dependent gadgets between 8.30pm to 9.30pm on March 19, as part of Earth Hour. ‘Earth Hour’ is a initiative by WWF network and will be observed on Saturday, March 19 from 8:30-9:30pm to create awareness on responsible consumption and resource conservation.