Article Detail World Population Day Answer: 11th July Similar Questions : 1. World Water Day Answer: 22 March 2. Central Excise Day Answer: 24 February 3. World Environment Day Answer: 5th June 4. Birthday of Shri Lal Bahadur Shastri Answer: 2 October, 1904 5. Earth Day Answer: 22 April 6. Indian republic day Answer: 26 January 7. Indian Civil Service Day Answer: 21 April Read more from - Important Days of Year