Article Detail International custom day Answer: 26 January Similar Questions : 1. Indian republic day Answer: 26 January 2. World Marriage Day Answer: Second Sunday of february 3. Birthday of Shri Lal Bahadur Shastri Answer: 2 October, 1904 4. International Labour Day Answer: 1st May 5. World Heritage Day Answer: 18 April 6. National Voters day Answer: 25 January 7. World TB Day Answer: 24 March Read more from - Important Days of Year