Acolouthia
The individual Offices that make up the daily cycle of services are: Vespers, Midnight Office, Orthros (Matins), the four Little Hours, and Apodeipnon (Compline). To this could be added the Typica, which is said on days on which there is no celebration of the Divine Liturgy (Eucharist).
Most of the Offices start with the Usual Beginning (a blessing by the priest, followed by the Trisagion and other prayers, ending with the Lord's Prayer and the call to worship: "O come, let us worship God our King..."), followed by one or several Psalms. The Psalter figures prominently in the Divine Services, and are found both in the fixed and the moveable portions of the services. In the descriptions that follow, the Septuagint numbering of the Psalms will be used.
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