The Roman Breviary (Latin: Breviarium Romanum) is one of the official Roman-rite Catholic versions of the canonical hours (also called the Divine Office, Work of God, Liturgy of the Hours, or simply the Office or Breviary), a collection of public prayers recited at certain times of the day. It developed gradually in the Middle Ages from various collections of Psalms and prayers, and gradually gained popularity until it was standardised throughout the church by Pope Pius V's edict Quod a nobis (1586). Since then it has undergone many revisions.
Following the Second Vatican Council, a new version of the hours with many differences to the Breviary was published in 1978 under the title Liturgy of the Hours (Latin: Liturgia Horarum). Since Benedict XVI's 2007 motu proprioSummorum pontificum, the hours may be said by clergy according to either the 1960 edition of the Breviary (in Latin) or the Liturgy of the Hours (in any language).
2337597The Roman BreviaryJohn Patrick Crichton-Stuart1908