The Daily Office is one of the acknowledged treasures of the Anglican tradition. In the 1549 Book of Common Prayer, Thomas Cranmer combined the sevenfold medieval offices of daily prayer said by clergy and monastics into two offices of Morning and Evening Prayer, continuing the tradition of parochial and cathedral observance of Mattins and Evensong. These were the most popular of the medieval hours of prayer in England, when devout lay folk were most likely to be present.
John Bauerschmidt. Covenant. 16 April 2018