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.
Earth Day History and Facts. Earth Day is an annual event created to celebrate the planetâs environment and raise public awareness about pollution. The day, marked on April 22, is observed worldwide with rallies, conferences, outdoor activities and service projects.