First Day of Autumn Fall Equinox-day when night and day are of equal length. September (9/22/08, 9/22/09, 9/23/10, 9/23/11, 9/22/12, 9/22/13, 9/23/14, 9/23/15, 9/22/16, 9/22/17, 9/23/18, 9/23/19, 9/22/20). 1  Autumnal Equinox. 2  Fall Equinox. 3  Earth's Seasons.
Earth Day Flag created by John McConnell. Earth Day is an annual event, celebrated on April 22, on which day events worldwide are held to demonstrate support for environmental protection.hile this April 22 Earth Day was focused on the United States, an organization launched by Denis Hayes, who was the original national coordinator in 1970, took it international in 1990 and organized events in 141 nations.
The United Nations General Assembly established World Environment Day in 1972 to commemorate the opening of the Stockholm Conference on the Human Environment.ince then, World Environment Day has been celebrated every year on June 5. It has become one of the United Nationsâ primary ways to raise global awareness of environmental issues and to help stimulate political attention, public action, and personal commitment to environmental preservation.