Earth Hour is a global event organized by the World Wildlife Fund (WWF) that encourages individuals, communities, and businesses to turn off non-essential lights for one hour. This initiative takes place annually, usually on the last Saturday of March, to raise awareness about climate change and promote energy conservation. During Earth Hour, participants are invited to join a symbolic act of solidarity for the planet. The event aims to inspire people to take action for a sustainable future, highlighting the importance of reducing energy consumption and protecting the environment for future generations.