Liturgy of the Hours - Wikipedia
https://en.wikipedia.org/wiki/Liturgy_of_the_Hours
The Liturgy of the Hours (Latin: Liturgia Horarum) or Divine Office (Latin: Officium Divinum) or Work of God (Latin: Opus Dei) or canonical hours, often referred to as the Breviary, is the official set of prayers "marking the hours of each day and sanctifying the day with prayer". It consists primarily of psalms supplemented by hymns, readings and other prayers and antiphons prayed at fixed ...
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