Parishes within the are permitted to use either the Liturgy of Saint Tikhon or that of Saint Gregory. While most parishes use the Tikhonite liturgy, several use the Gregorian liturgy on weekdays or on specific Sundays of the year. Presently, there is no breviary specifically designed for the Orthodox Western Rite, though priests of the who celebrate the Liturgy of Saint Gregory are expected to pray as much of the "Breviarium Monasticum" as possible, in the "Anglican Breviary". The same hours, in English or Latin, are approved for Christ the Savior Monastery under the . However, priests who celebrate the Liturgy of Saint Tikhon pray a form of Morning Prayer and Evensong approved by the .