In 1991, on the initiative of national leader Heydar Aliyev, in Nakhchivan Supreme Assembly it was decided to establish the Solidarity Day of World Azerbaijanis

and to celebrate it all over the country. The national leader Heydar Aliyev has petitioned to the Supreme Soviet of the Republic of Azerbaijan for it. By Parliament’s decision of 26 December 1991, this day is celebrated every year on December 31 as the Solidarity Day of World Azerbaijanis.