Vigils, Lauds, Terce, Sext, None, Vespers and Compline are the seven “hours” of the liturgy of the hours or opus Dei (work of God) as St. Benedict called it in his Rule. They are common prayer services, the prayer of the Church as well as the prayer of the community. None of these “hours” actually lasts an hour. All seven add up to two and a half or two and three-quarters hours. The backbone of these services is the 150 psalms, sung or recited according to a two-week cycle. At each hour there is also a hymn, reading from Scripture, prayer of the day and commemoration of Our Lady.