Article Detail Earth Day Answer: 22 April Similar Questions : 1. Earth Day Answer: 22 April 2. Photography Day Answer: 19 August 3. National Science Day Answer: 28 February 4. World AIDS Day Answer: 1 December 5. World Post Office Day Answer: 9 October 6. World TB Day Answer: 24 March 7. World AIDS Day Answer: 1 December Read more from - Important Days of Year