Thane Named As National Earth Hour Capital 2015 By WWF Thane in Mumbai, Maharashtra was named as the National Earth Hour Capital 2015 on 9 April 2015. Thane city won the bid among the three finalists Thane, Pune and Rajkot in the Earth Hour City Challenge (EHCC) 2015 conducted by World Wide Fund. Seoul city, the capital and largest metropolis of South Korea, on 9 April 2015 was awarded the title of Global Earth hour Capital 2015 after it won the Earth Hour City Challenge (EHCC) of World Wildlife Fund (WWF).