The Great Fast
Byzantine rite · Eastern Orthodox Church · Greek
Forty days, and the weekday rule that produces the Presanctified Liturgy.
forty days before Holy Week, with the Presanctified on weekdays
A form of The great fast — The forty days. Nicaea's fifth canon assumes it as the frame of the year, which is the earliest conciliar notice of it.
After The Rudder (Pedalion) · the Rudder, on Trullo canon 52.