December 24, 2014: Health and family welfare minister Kalikho Pul dropped from ministry after he alleges fiscal mismanagement in Arunachal Pradesh
April 2, 2015: State Congress expels Pul for alleged anti-party activities
May 18, 2015: Local court in Itanagar stays Pul’s expulsion
September 16, 2015: Chief minister Tuki invites his MLAs to dinner and makes them sign ‘irrevocable resignation letters’ in the wake of dissidence
October 6, 2015: Two MLAs who attended dinner ‘quit’ but ask speaker Nabam Rebia to treat ‘resignation letter as invalid’ as they were forced to sign
November 8, 2015: Led by Pul, 21 Congress MLAs issue statement against “autocratic” Tuki and denounce his “legitimacy as leader of CLP”
November 19, 2015: State BJP adopts resolution for removal of Rebia as speaker
December 10, 2015: Governor JP Rajkhowa issues order advancing the assembly session from January 14-16 to December 16-18
December 15, 2015: Rebia issues notice disqualifying 14 of the 21 rebel Congress MLAs
December 16, 2015: Government locks assembly building but deputy speaker TN Thongdok holds session in community hall for 33 MLAs, including 11 of BJP and two independents, to impeach Rebia as pro-Tuki groups disrupt normal life
December 17, 2015: Rebels hold assembly in hotel after community hall is razed, vote against Tuki; elect Pul as ‘CM’; Rebia moves HC to keep assembly and related developments in abeyance
January 5, 2016: HC stays disqualification of 14 Congress MLAs
January 13, 2016: HC rules in favour of dissidents, vacating order that kept December 16-18 assembly session in abeyance
January 13, 2016: SC stays convening of assembly session till January 18.
January 14, 2016: SC refers all the petitions to a Constitution bench
January 15, 2016: SC starts examining the constitutional position on the scope of discretionary powers of Governor and other related issues
January 24, 2016: Union cabinet recommends imposition of President’s rule inArunachal Pradesh
January 25, 2016: Congress moves SC against the NDA government’s move
January 26, 2016: President Pranab Mukherjee accepts the cabinet’s recommendation
January 27, 2016: SC issues notice to Centre, Governor on Congress’ petition; hearing on Feb 1
February 17, 2016: Union Cabinet decides to recommend revocation of Prez Rule; but SC order status quo
February 18, 2016: SC clears decks for formation of new government by vacating the status quo order.
February 22, 2016: SC reserves orders against a Gauhati high court verdict that upheld the discretionary powers of governor to summon or advance a sitting of the assembly.
July 13, 2016: The Supreme Court orders the restoration of the Congress government, scrapping all decisions by the governor that precipitated the fall of the previous administration