World Earth Day

问题：世界地球日是什么时候？回答：TheWorldEarthDayisonApril22nd。世界地球日在4月22日满意请采纳，谢谢

Earth Day

(April 22, 1970), event established to mobilize public sentiment toward environmental issues; suggested by Senator Gaylord Nelson of Wisconsin with hopes of it occurring annually; Congress adjourned as members spoke at gatherings across U.S., with up to 25,000 people taking part in rallies; in 1980 about 250,000 people marched in New York in remembrance of the original Earth Day; 1990 celebration had themes of individual responsibility for halting pollution and exploitation of Earth's finite resources; 200 million people in 140 nations participated in parades, trash cleanups, and concerts.

Earth Day is an annual event celebrated on April 22. Worldwide, various events are held to demonstrate support for environmental protection. First celebrated in 1970, Earth Day events in more than 193 countries are now coordinated globally by the Earth Day Network.
On Earth Day 2016, the la