On the Observation of the Apostles’ Fast

When Was the Apostles’ Fast Established?

The institution of the Apostles’ Fast dates back to the earliest times of the Orthodox Church.

The ecclesiastical establishment of this fast is mentioned in the Apostolic Constitutions:

“After Pentecost, celebrate one week, and then fast; for justice requires both rejoicing after receiving the gifts of God and fasting after the relaxation of the flesh.”

This fast became especially established when churches dedicated to the Foremost Apostles Peter and Paul were built in Constantinople and Rome, which at that time had not yet fallen away from Orthodoxy. The consecration of the church in Constantinople took place on the feast of the Apostles, June 29, and from that time the day became especially solemn both in the East and in the West. In the Orthodox Church, the custom became established for pious Christians to prepare for this feast through fasting and prayer.

From the fourth century onward, references to the Apostles’ Fast become increasingly frequent in the writings of the Fathers of the Church. It is mentioned by Saint Athanasios the Great, Saint Ambrose of Milan, and, in the fifth century, by Saint Leo the Great and Theodoret of Cyrrhus.

An Equation to Determine the Duration of the Apostles' Fast

The Lent of Summer or of the Holy Apostles, is in the month of June during the harvest, but it does not have a specific and fixed duration.

It depends on when Easter is.

In the days of old, before the internet and before churches handed out calendars, when pious people wanted to figure out how long the Apostles' Fast would be in a particular year, which was important because it usually fell during the June harvest season, they figured out in a practical way when it would be and how long it would last. They did this by remembering the following saying:

"As many days as there are left in April and three in May." 

("Όσες μέρες περισσεύουν του Απρίλη και τρεις του Μάη.")