Timeline
January 26, 1947: Nepali Rashtriya Congress formed and B.P. Koirala elected President at the first General Convention.
March 13, 1947 : Launched a massive countrywide anti-Rana demonstration. Started labour movement and strike in Jute Mill in Biratnagar which was led by Late Girija Prasad Koirala, the ex-Prime Minister and the ex-Party President.
April 9, 1950 : Formation of Nepali Congress through the merger of Nepali National Congress (established on January 25, 1947) and Nepal Democratic Congress (established on August 4, 1948) at Calcutta, India and call for an armed struggle against the Rana regime. Matrika Prasad Koirala became the President
September 26–27, 1950 : Adoption of the strategy of the armed revolution to overthrow the Rana regime at Bairgania Conference.
November 6, 1950 : Beginning of the armed revolution which was supported by King Tribhuvan who went into exile. Some Indian socialists fought as comrades-in-arms and Burmese socialists supported with the arms and ammunitions.
November 11, 1950 : Armed Struggle started, with the attack in Birgunj.
February 18, 1951 : Fall of Rana regime, formation of Rana-Nepali Congress coalition government on parity basis with Rana Mohan Shumshere as Prime Minister. B.P. Koirala was Home Minister and leader of Nepali Congress representing the party at the coalition government which lasted only for nine months.
November 16, 1951 : Matrika Prasad Koirala then President of Nepali Congress, nominated by H.M. the King as the Prime Minister - the first commoner Prime Minister under the democratic set up.
May 23–26, 1952 : The Fifth National Convention held at Janakpur B.P. Koirala was elected the Party President.
July 25, 1952 : Matrika Prasad Koirala, Prime Minister expelled by Nepali Congress from Party membership as he was found violating the party principles and acting against the Constitution of 1951.
January 24–25, 1956 : The sixth National Convention held in Birgunj which adopted the principles of democratic socialism and decentralization for social transformation; Subarna Shamsher was elected as the President.
May 23, 1957 : Special National Convention held at Biratnagar, B.P. Koirala became the Party President.
December 7, 1957 : Nepali Congress leads civil disobedience movement in cooperation with other political parties in demanding to form an elected government as laid down in the interim Constitution. The movement stopped when an agreement was reached with King Mahendra to hold an election for the parliament.
May 15, 1958 : Participated in a multi-party caretaker government led by Subarna Shamsher to hold general election.
February 18, 1959 : Nepali Congress secures two-thirds majority (74 out of 109 seats) in Nepal's first parliamentary election held.
May 27, 1959 : Formation of the first elected government under the Prime Ministership of B.P. Koirala.
May 7–13, 1960 : B.P. Koirala elected as the Party President by the Seventh National Convention held at Kathmandu.
December 15, 1960 : Coup d'etate by King Mahendra with the help of the army. B.P. Koirala and other party leaders arrested, government and parliament dissolved, ban imposed on political parties, many civil liberties suspended.
January 25–27, 1961 : Conference of Nepali Congress activists held in Patna, India under the leadership of Subarna Shamsher, Deputy Prime Minister in the deposed government appealed for a non-violent movement against the Royal Coup and restoration of democracy. Merging of various political parties in Nepali Congress, including the main parliamentary opposition party Gorakha Parishad. Peaceful demonstration countrywide in which more than 2000 people were arrested.
December 1961 : Start of a full scale armed revolt.
November 8, 1962 : Armed struggle called off and adoption of peaceful means for struggle.
October 30, 1968 : B.P. Koirala and other leaders released after eight years in prison
February 12, 1969 : B.P. Koirala calls for restoration of democracy even by violent means if non-violent methods would not work. Subsequently three pronged approach of Nepali Congress emerged for restoration of democracy. Subarna Shumshere tried to work through dialogue and cooperation with the King, Krishna Prasad Bhattarai through non-violent and non-cooperative means at home and by B.P. Koirala by armed struggle from exile in India
August 24, 1972 : Start of armed action led by B.P. Koirala. For that on November 17, 1975 (Mansir 1, 2032 B.S.) he was sentenced to death in absentia.
February 12, 1976 : K.P. Bhattarai nominated as the Acting President of the Nepali Congress Party by President B.P. Koirala.
December 30, 1976 : B.P. Koirala returns from exile in India following the new policy of "National Reconciliation" advocating an understanding between the King and people for the restoration of democracy.
May 24, 1979 : King Birendra proclaims a national referendum following student's revolt against the Panchayat's system.
July 21, 1982: Death of BP Koirala sees a handover of the party's power to the troika of Ganesh Man Singh, K.P. Bhattarai and Girija Prasad Koirala. Bhattarai nominated as the acting party President.
May 23, 1985 : Nepali Congress organized a nationwide civil disobedience movement against the Panchayat system in which more than 12,000 party workers and sympathizers voluntarily went to jail for several months.
January 18, 1990 : Under the command of supreme leader Ganesh Man Singh, National Conference of Nepali Congress called for a decisive movement for the restoration of democracy, welcoming other political groups to join if they desire to do so.
February 18, 1990 : Nepali Congress starts a nation-wide movement to restore democracy. It was joined by coalition of seven Communist Parties led by Nepal Communist Party (ML).
April 8, 1990 : Fall of Panchayat system following street protests. Royal proclamation ends party-less system.
April 18, 1990 : Interim Government formed under the Prime Ministership of Nepali Congress Acting President K.P. Bhattarai, representing the three forces- King, Nepali Congress, and the Communists to prepare and enact Constitution 1990 to safeguard Constitutional Monarchy and people's sovereignty with multi-party democratic set-up, and hold election, accordingly.
May 12, 1991 : Nepali Congress secures majority (114 seats out 205) in the general elections.
May 30, 1991 : Formation of elected Nepali Congress government under the Prime Ministership of Girija Prasad Koirala, the then General Secretary.
February 13–15, 1992: Eighth General Convention in Chandragadhi, Jhapa. K.P. Bhattarai elected as the party president.
November 1994 : Mid-term election held nationwide, minority government of CPN (UML) formed, different coalition government formed after the failure of minority government.
May 8–11, 1996: Ninth General Convention in Kathmandu elects Girija Prasad Koirala as the party president, a post he occupies for almost 14 years till his death on March 20, 2010.
January 19–22, 2001: Tenth General Convention held in Pokhara.
September 22, 2002: Deuba faction splits and forms NC-Democratic.
Aug 30-Sept 2, 2005: Eleventh general convention held in Kathmandu.
September 25, 2007: Nepali Congress - NC-Democratic merger.
Sep 17-21, 2010: 12th general convention held in Kathmandu.
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