World Day of Peace takes place on January 01, 2025. The World Day of Peace, sometimes unofficially known as World Peace Day, is a feast day of the Roman Catholic Church dedicated to peace, held on 1 January, on the Solemnity of Mary, Mother of God. It was introduced in 1967 by Paul VI, inspired by the encyclical Pacem in Terris of John XXIII and with reference to his own encyclical Populorum Progressio. The day was first observed on 1 January 1968. The World Day of Peace has often been a time when popes make magisterial declarations relevant to the social doctrine of the Church. (With material from: Wikipedia)
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