Article Detail International custom day Answer: 26 January Similar Questions : 1. World Meteorological Day Answer: 23 March 2. World kidney day Answer: 9th March 3. Central Excise Day Answer: 24 February 4. Sarvodaya day Answer: 30 January 5. Hiroshima Day Answer: 6th August 6. World Water Day Answer: 22 March 7. World Population Day Answer: 11th July Read more from - Important Days of Year