Великий пост
In the Eastern Orthodox Church, its equivalent, the Sunday before Great Lent, is called "Forgiveness Sunday", "Maslenitsa Sunday", or "Cheesefare Sunday". The latter name comes because this Sunday concludes Maslenitsa, the week in which butter and cheese may be eaten, which are prohibited during Great Lent. The former name derives from the fact that this Sunday is followed by a special Vespers called "Forgiveness Vespers" which opens Great Lent.