In Christianity, the Little Hours or minor hours are the canonical hours other than the three major hours.
In the Syriac Orthodox Church and the Indian Orthodox Church, two denominations in Oriental Orthodox Christianity, these fixed prayer times are known as 3rd hour prayer (Tloth shoin [9 am]), 6th hour prayer (Sheth sho
in [12 pm]), and 9th hour prayer (Tsha' sho`in [3 pm]).
In the Catholic Church, since the reform of the Liturgy of the Hours mandated by the Second Vatican Council, they are called the office of readings, morning prayer and evening prayer. The minor hours, so called because their structure is shorter and simpler than that of the major hours, are those celebrated between lauds and vespers (morning and evening prayer) together with compline (night prayer).
The major hours are those whose traditional names are matins, lauds and vespers.
From the time of the early Church, the practice of seven fixed prayer times have been taught; in Apostolic Tradition, Hippolytus instructed Christians to pray seven times a day "on rising, at the lighting of the evening lamp, at bedtime, at midnight" and "the third, sixth and ninth hours of the day, being hours associated with Christ's Passion." This has given rise to the practice of praying the canonical hours at seven fixed prayer times.
Between lauds and vespers, both Western Christianity and the Eastern Orthodox Church traditionally celebrate three canonical hours, consisting mainly of psalms and bearing names derived from the hours of daylight: terce (third hour, 9 a.m.), sext (sixth hour, noontime) and none (ninth hour, 3 p.m.). These prayer times derive from ancient Jewish practice and are mentioned in the Acts of the Apostles. They also commemorate the events of the Passion of Jesus.
The Roman Rite also had prime (first hour, 6 a.m.). This has been suppressed by mandate of the Second Vatican Council.