When was the first national earth day

Earth Day was first celebrated in 1970. Peace activist, John McConnell proposed the day of March 21, 1970, the first day of spring, to honor the earth and the concept of peace. The date changed to April 22 that year and by 1990 it was taken internationally. Now more than 192 countries each year celebrate Earth Day.

The First National earth day was in April on the 22nd in 1970