Y was 26th january selected as independence day for INDIA at the lahore session of the INC 1929?

Question

INC- indian national congress

Answer 1

Yes, actually the Indian National Congress declares 26th
January as Independence Day or as the day for Poorna
Swaraj (Complete Independence) in 1930, not 1929.

It was the Lahore Session of the Indian National Congress at midnight of December 31, 1929 - January 1, 1930, that the Tri-Colour Flag was unfurled by the nationalists and a pledge taken that every year on January 26, the "Independence Day" would be celebrated and that the people would unceasingly
strive for the establishment of a Sovereign Democratic
Republic of India.