Every year at 2:3 p.m. local time on the last Saturday in March.

Earth Hour is a global energy-saving activity proposed by the World Wide Fund for Nature (WWF) in response to global climate change, which is advocated at 2: 3pm local time on the last Saturday of March every year (2: 3pm Earth Hour time in 22).

home and business users turn off unnecessary lights and power-consuming products for one hour to show their support for climate change action. Climate change caused by excessive carbon dioxide emissions has greatly threatened the survival of human beings on earth. Therefore, only by changing the attitude of the global public towards carbon dioxide emissions can the public reduce the impact of this threat on the world.

origin of the activity

Earth Hour, also known as "Turn off the lights for one hour", is an initiative launched by the World Wide Fund for Nature in 27: it calls on individuals, communities, enterprises and governments to turn off the lights for one hour from 2: 3 to 21: 3 on the last Saturday of March every year to inspire people's sense of responsibility for protecting the earth.

as well as thinking about environmental issues such as climate change, it shows support for the global action against climate warming. This is a global activity. After WWF first advocated it in Sydney in 27, it swept the world at an alarming speed, and everyone came to participate in this activity.

Baidu encyclopedia-Earth Hour