The third hour of the Divine Office, also called the "Middle Hour." It consists essentially of three psalms, a short biblical reading, and prayer that vary according to the time of the day they are said.
The fourth hour of the Divine Office, also called Vespers. It consists of a hymn, two psalms, an Old or New Testament canticle, short biblical reading, the Magnificat of the Blessed Virgin, responsories, intercessions, and a concluding prayer.