The Liturgy of the Hours, also known as the Divine Office or the Work of God (Opus Dei), is the daily prayer of the Church, marking the hours of each day and sanctifying the day with prayer. This graph is an ideal picture. Most convents and monasteries have a modified start and end times for each of the (8) Offices. Each Office is (3) hours long x (8) = 24/7 – truly the “WORK of God”. The Opus Dei.