Earth Day is an annual event on which day events worldwide are held to demonstrate support for environmental protection. It is coordinated globally by the Earth Day Network, and celebrated in more than 192 countries each year.
United States Senator Gaylord Nelson
United States Senator Gaylord Nelson chose the date in order to maximize participation on college campuses. The week of April 19–25 did not fall during exams or spring breaks. Moreover, it did not conflict with religious holidays, and was late enough