In the practice of Christianity, canonical hours mark the divisions of the day in terms of fixed times of prayer at regular intervals. A book of hours, chiefly a breviary, normally contains a version
Opening verse from a Book of Hours Domine labia mea aperies et os meum annuntiabit laudem tuam, c. 1520
Breviary of Beatrice van Assendelft, 1485
Cistercians singing the Liturgy of the Hours at Heiligenkreuz Abbey
Traditionally, monastic communities pray the Divine Office in the choir of the church.
Vespers is a liturgy of evening prayer, one of the canonical hours in Catholic, Orthodoxy, Anglican, and Lutheran liturgies.
Canonical hours
…of the week, Christians assembled at the church every day for morning prayer (which became known as lauds) and evening prayer (which became known as vespers), while praying at the other fixed prayer times privately. In the evening the faithful assembled in the place or church where the feast was to be…
Cistercians singing vespers in Santa Maria de Poblet in Catalonia
Incensing the congregation during the Magnificat at an Advent celebration of Vespers
Orthodox priest and deacon making the Entrance with the censer at Great Vespers
Table set with five loaves, wheat, wine and oil for artoklassia