What is the length of the Apostle's Fast in a given year?

This line chart tracks how many days the Apostle’s Fast lasts in each year from 2000 to 2100, revealing that its duration shifts significantly over time. In some years the fast is only about two weeks long, while in others it stretches to nearly fifty days, illustrating how the timing of Pentecost and the Feast of St. Peter and St. Paul produces a wide range of fasting lengths.​