Great Lent

Great Lent, or the Great Fast, (Greek: Μεγάλη Τεσσαρακοστή or Μεγάλη Νηστεία, meaning "Great 40 Days," and "Great Fast," respectively) is the most important fasting season in the church year in Eastern Orthodox Christianity including Western Rite Orthodoxy, which prepares Christians for the greatest feast of the church year, Pascha (Easter).

In many ways Great Lent is similar to Lent in Western Christianity. There are some differences in the timing of Lent (besides calculating the date of Easter) and how it is practiced, both liturgically in the public worship of the church and individually.

Duration; differences from Western Christianity

One difference between Eastern Christianity and Western Christianity is the calculation of the date of Easter (see Computus). Most years, the Eastern Pascha falls after the Western Easter, and it may be as much as five weeks later; occasionally, the two dates coincide. Like Western Lent, Great Lent itself lasts for forty days, but in contrast to the West, Sundays are included in the count.