The first earth day was observed in April 22 in the year:
The first earth day was observed in April 22 in the year:
پہلا ارتھ ڈے سال میں 22 اپریل سن ۔۔۔۔۔ کو منایا گیا
Explanation
Earth Day is observed on April 22 annually
The first Earth Day was held on April 22, 1970