Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network) including 1 billion people in more than 193 countries. The official theme for 2023 is Invest In Our Planet.
The first Earth Day was celebrated in 1970, and it has since become a global event observed in over 190 countries. As the largest civic event on the planet, Earth Day traces its roots to the first environmental movement.