Q. On which date, Purna Swaraj declaration or Declaration of the Independence of India, was promulgated by the Indian National Congress?
Answer: 26 January 1930
Notes: The flag of India was hoisted at midnight on 31 December 1929 on the banks of the Ravi river at Lahore by Jawaharlal Nehru. The Purna Swaraj Declaration, or the Declaration of the Independence of India, was promulgated by the Indian National Congress on 26 January 1930 in the Lahore session; and the Congress called upon Indians to observe 26 January as the Independence Day. Although with the transfer of power to Indians by the British on 15 August 1947, 15 August became the official Independence Day. The new Constitution of India declaring India as a republic took effect on 26 January 1950, making 26 January the Republic Day.