Earth Day is a name used for two different observances, both held annually during spring in the northern hemisphere. These are intended to inspire awareness of and appreciation for the Earth's environment. The United Nations celebrates Earth Day each year on the vernal (March) equinox; while a global observance in many countries is held each year on April 22. Contents 1 The Equinoctial Earth Day 2 The April 22 Earth Day 2.1 Growing Eco-activism before Earth Day 1970 2.2 Earth Day 1970 2.3 The Aftermath of Earth Day 1970

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