Article Detail World Book and Copyright Day Answer: 23 April Similar Questions : 1. World TB Day Answer: 24 March 2. World Sight Day Answer: Second Thursday of October 3. International custom day Answer: 26 January 4. National youth day Answer: 12th January. It is celebrated on the birthday of swami Vivekanand ji 5. World Habitat Day Answer: 3 October 6. World Diabetes Day Answer: 27th June 7. World Anti-tobacco Day Answer: 31 May Read more from - Important Days of Year