when is earth day

Earth Day is celebrated annually on April 22. It is a global event dedicated to raising awareness about environmental protection. The first Earth Day was held on April 22, 1970, and now it involves over one billion people in nearly 200 countries around the world. The event was initiated by U.S. Senator Gaylord Nelson to engage the public and highlight environmental issues such as pollution and conservation. The day often includes activities like clean-ups, tree planting, and promoting renewable energy and climate action. For example, the theme for Earth Day 2025 is "Our Power, Our Planet," focusing on renewable energy and encouraging efforts to triple the capacity of renewables by 2030.