The All-night vigil is a service of the Eastern Orthodox and Byzantine Catholic churches consisting of an aggregation of the canonical hours of Compline (in Greek usage only), Vespers (or, on a few occasions, Great Compline), Matins, and the First Hour. This service may be performed (commencing the evening before) on any Sunday or major feast, any feast for which a Litia is prescribed; these feasts are marked in the Typikon and in liturgical calendars by a Greek cross printed in red in a properly-shaped semicircle [open at the top] (). Order When celebrated at the all-night vigil, the orders of Great Vespers and Matins vary somewhat from when they are celebrated separately. In parish usage, many portions of the service such as the readings from the Synaxarion during the Canon at Matins are abbreviated or omitted, and it therefore takes approximately two or two and a half hours to perform. Note that the Psalms cited below are numbered according to the Septuagint, which differs from that found in the Masoretic. Great Vespers Note that on the Eves of Nativity, Theophany, and the Annunciation, Great Compline is usually prescribed rather than Great Vespers. Great Censing of the entire church by the priest with a deacon going before him holding a large candle. In Greek practice, this is during compline, but in Russian practice, in silence The opening blessing that is otherwise used for matins by the priest: "Glory to the holy, consubstantial, life-creating, and indivisible Trinity, always, now and ever, and unto ages of ages" "Come let us worship God our king" and "Psalm of creation", Psalm 103 Great Litany First Kathisma, only the first stasis on a feast day, but in its entirely on a Sunday otherwise Little Litany "Lord I have cried" (psalms 140, 141, 129, 116), with appointed stichera, ending with the Dogmatic Theotokion, a hymn addressed to the Theotokos Entrance O gladsome light Prokeimenon for the day of the week Old Testament readings on a feast day Augmented Litany The prayer, "Vouchsafe, O Lord" Litany of Askings Litia on a feast day Aposticha Now lettest Thou thy servant depart in peace recited by the ecclesiarch (although sung in Russian parish usage) The Trisagion prayers Apolytikion appointed for the feast or on a Sundays otherwise, "Rejoice, O Virgin Theotokos..." Artoklasia if there was a Litia "Blessed be the name of the Lord", Psalm 33 (first ten verses),