What is "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.