Horae Canonicae is a series of poems by W. H. Auden written between 1949 and 1955.
The title is a reference to the canonical hours of the Christian Church, as are the titles of the seven poems constituting the series: "Prime", "Terce", "Sext", "Nones", "Vespers", "Compline", and "Lauds".
Each refers to a fixed time of the day for prayer.
The canonical hours create a framework for the dramatization of Auden's religious position, which he described in a letter as "very much the same as Reinhold [Neibuhr]'s, i.e. Augustinian, not Thomist (I would allow a little more place, perhaps, for the Via Negativa.)
Horae Canonicae was published as a unity in Auden's The Shield of Achilles (1955).