Ὡρολόγιον τὸ Μέγα

Containing all the services belonging to it, according to the order of the Eastern Church and the sacred monasteries subject to it, with some necessary additions.
Of all the liturgical books, the Horologion always holds a special relevance due to the texts it contains, Vespers and Matins, and for the plethora of Apolytikia and Kontakia, with which all movable and immovable feasts throughout the year are adorned. For this reason, it is a valuable aid for all pious Christians.