Earth Hour was observed annually on the Last Saturday of March from 8:30 pm to 9:30 pm.
* In 2023, this day was observed on March 25 at 8.30 pm local time.
* It is a worldwide movement organized by the World Wildlife Fund (WWF) to encourage individuals, communities, and businesses to turn off non-essential electric lights for one hour.
* It was first started in Sydney, Australia on March 31, 2007, at 7:30 pm local time and has since gained popularity and momentum..
Source : Indian Eexpress
