- 1885, Bombay – First INC session, presided by W.C. Bonnerjee. 
- 1907, Surat – Congress split into Moderates and Extremists. 
- 1916, Lucknow – Lucknow Pact with Muslim League. 
- 1919, Amritsar – Protest against Jallianwala Bagh massacre. 
- 1920, Nagpur – Launch of Non-Cooperation Movement. 
- 1924, Belgaum – Only session presided over by Gandhi. 
- 1927, Madras – Demand for complete independence raised. 
- 1929, Lahore – Purna Swaraj declared; 26 Jan observed as Independence Day. 
- 1931, Karachi – Resolution on Fundamental Rights; Gandhi-Irwin Pact endorsed. 
- 1936, Lucknow – Congress adopted socialism. 
- 1938, Haripura – Bose formed National Planning Committee. 
- 1939, Tripuri – Bose-Gandhi rift; Bose resigned. 
- 1946, Meerut – Last session before independence; focus on power transfer.