The Constitution of Ukraine () is the fundamental law of Ukraine. The constitution was adopted and ratified at the 5th session of the Verkhovna Rada, the parliament of Ukraine, on 28 June 1996. The constitution was passed with 315 ayes out of 450 votes possible (300 ayes minimum). All other laws and other normative legal acts of Ukraine must conform to the constitution. The right to amend the constitution through a special legislative procedure is vested exclusively in the parliament. The only body that may interpret the constitution and determine whether legislation conforms to it is the Constitutional Court of Ukraine. Since 1996, the public holiday Constitution Day is celebrated on 28 June. In 2004, amendments were adopted that significantly changed Ukraine's political system; these changes are sometimes referred to as the 2004 Constitution. In 2010, then-President of Ukraine Viktor Yanukovych reverted these changes on the basis of a ruling made by the Constitutional Court of Ukraine. Following the events of Euromaidan (2013–2014), the 2004 amendments were reinstated. History Until 8 June 1995, Ukraine's supreme law was the Constitution (Fundamental Law) of the Ukrainian SSR (adopted in 1978, with numerous later amendments). On 8 June 1995, President Leonid Kuchma and Speaker Oleksandr Moroz (acting on behalf of the parliament) signed the Constitutional Agreement for the period until a new constitution could be drafted. The first constitution since independence was adopted during an overnight parliamentary session after almost 24 hours of debate of 27–28 June 1996, unofficially known as "the constitutional night of 1996." The Law No. 254/96-BP ratifying the constitution, nullifying previous constitutions and the Agreement was ceremonially signed and promulgated in mid-July 1996. According to a ruling of the Constitutional Court of Ukraine, the constitution took force at the moment when the results of the parliamentary vote were announced on 28 June 1996 at approx. 9 a.m. Kyiv Time. Ukraine was the last of the post-Soviet states to adopt its own constitution. On Constitution Day 2018, President Petro Poroshenko remarked that the 1710 Constitution of Pylyp Orlyk is the predecessor of Ukraine's current constitution. In February 2019 the constitution was amended to require governments to seek EU and NATO membership. Structure The Constitution of Ukraine is divided into 15 chapters: General Principles Human and Citizens' Rights, Freedoms and Duties Elections. Referendums Verkhovna Rada of Ukraine President of Ukraine Cabinet of Ministers of Ukraine. Other Bodies of Executive Power Prokuratura