Article Detail World Post Office Day Answer: 9 October Similar Questions : 1. Indian Air Force Day Answer: 8 October 2. UN International Day for Natural Disaster Reduction Answer: 13 October 3. Earth Day Answer: 22 April 4. Worldtheatre Day Answer: 27 March 5. World AIDS Day Answer: 1 December 6. Kargil Memorial Day Answer: 26th July 7. World Citizen Day Answer: 19 November Read more from - Important Days of Year