In which session of the Indian National Congress was the Poorna Swaraj resolution adopted?

The Purna Swaraj declaration, or Declaration of the Independence of India was promulgated by the Indian National Congress on January 26, 1930, resolving the Congress and Indian nationalists to fight for Purna Swaraj, or complete self-rule independent of the British Empire. The flag of India had been hoisted by Congress President Jawaharlal Nehru on December 31, 1929, on the banks of the Ravi river in Lahore, modern-day Pakistan.