The answer
a. Jonah’s Fast begins fifteen days before the start of Lent and lasts three days:
Monday, Tuesday, and Wednesday. On Thursday, the pascha of Jonah is celebrated as a prophecy of the resurrection of Christ or the Christian Pascha.
b. The Great Lenten Fast has a weekday rite that differs from that of Saturdays and
Sundays, as well as a rite for the evening prayers of Sunday, and for the last Friday of Lent.
Fr. Tadros Yacoub Malaty