Article Detail World Heritage Day Answer: 18 April Similar Questions : 1. Indian Armed Forces Flag Day Answer: 7 December 2. World AIDS Day Answer: 1 December 3. World Health Day Answer: 7 April 4. World TB Day Answer: 24 March 5. World Standards Day Answer: 14 October 6. Commonwealth Day Answer: Second Monday of March 7. World Citizen Day Answer: 19 November Read more from - Important Days of Year