The Spanish edition is published under the authority of the Conferencia Episcopal Española and printed by Coeditores Litúrgicos (formerly Catholic Book Publishing Corp. for the US Spanish market). Unauthorized PDFs found on file-sharing sites (Internet Archive, Scribd, random blogs) are .

The Liturgia de las Horas (Liturgy of the Hours), also known as the Divine Office, is the official daily prayer of the Catholic Church. Second only to the Holy Mass in liturgical importance, it sanctifies the day by dedicating specific times to prayer, primarily using the Psalms, biblical canticles, and readings from the Church Fathers.