Second Vatican Council
The Second Ecumenical Council of the Vatican, commonly known as the or , addressed relations between the Catholic Church and the modern world. The council, through the Holy See, was formally opened under the pontificate of Pope John XXIII on 11 October 1962 and was closed under Pope Paul VI on the Solemnity of the Immaculate Conception on 8 December 1965.
Religious law
Pope John XXIII initially called for a Synod of the Diocese of Rome, an Ecumenical Council, and an updating to the 1917 Code. After the Second Ecumenical Council of the Vatican (Vatican II) closed in 1965, it became apparent that the Code would need to be revised in light of the documents and theology of Vatican II. After multiple drafts and many years of discussion, Pope John Paul II promulgated the revised Code of Canon Law (CIC) in 1983. Containing 1752 canons, it is the law currently binding on the Latin (western) Roman Church.