Pics about hippie - hairy - outdoors - nature - naturist - unshaved - coed - tattoo 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 Earth Day Network including 1 billion people in more than 193 countries. The official theme for 2022 is Invest In Our Planet.