Article Detail National Science Day Answer: 28 February Similar Questions : 1. World Environment Day Answer: 5th June 2. Hindi Divas Answer: 14th september 3. National Sports Day Answer: 29 August 4. National youth day Answer: 12th January. It is celebrated on the birthday of swami Vivekanand ji 5. World Standards Day Answer: 14 October 6. World Food Day Answer: 16 October 7. Earth Day Answer: 22 April Read more from - Important Days of Year