The paper analyzes the 9th century liturgy of the hours on the basis of the Liber officialis by Amalarius of Metz. The main issue is focused on reconstruction of order and prayers that may be found there. In each hour described by the author of the Liber officialis it is possible to find identical elements: explanation of prayer time, listing psalms, verses or other prayers, aim of each prayer and behavior of priest and congregation. Amalarius gave to all mentioned elements the allegorical interpretation.