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Medieval Time: Divine Office

Library and internet materials for research on aspects of Medieval time and the study of chronology.


Intended as an overview of available sources of liturgical time. Grouped into the following categories:

Divine Office


The breviary is the book of the Divine Office.

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Free Library Philadelphia MS Lewis E 086, ff. 34v-35r  



Trivulzio Book of Hours

The Hague, Koninklijke Bibliotheek. SMC 1,  f. 45r.

Book of Hours