The Great and Small Supplication (Paraklesis) Services to the Theotokos
There are two forms of the Paraklesis Canon to the Theotokos: the Small Paraklesis which was composed by Theosteriktos the Monk in the 9th century (or some say Theophanes), and the Great Paraklesis. During the majority of the year, only the Small Paraklesis to the Theotokos is chanted. However, during the Dormition Fast (August 1—14), the Typikon prescribes that the Small and Great Paraklesis be chanted on alternate evenings, according to the following regulations: –