Earth Hour: Lights turned off in monuments in Delhi, Mumbai, Kolkata to conserve energy (WATCH)

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Earth Hour: Lights turned off in monuments in Delhi, Mumbai, Kolkata to conserve energy (WATCH)

Rashtrapati Bhawan and Akshardham temple in Delhi, Kolkata's Howrah bridge and Mumbai’s Chhatrapati Shivaji Maharaj Terminus were among some renowned places where lights were turned off for the Earth Hour.