The Fast of the Apostles
This fast, also known as the Fast of Peter and Paul in some traditions, is one of the four canonical fasting periods in the Ethiopian Orthodox Tewahedo Church and other Oriental and Eastern Orthodox Churches. It follows the celebration of Pentecost (the descent of the Holy Spirit) and varies in length each year because it begins on the Segno, after Pentecost (which is movable) and ends on 5 Hamle in the Ethiopian calendar), the Feast of Saints Peter and Paul.