I only remember it being around 15 because my family only went during fall, winter and stopped going after Easter. I found it weird that there was a pattern and it repeated but the Bibles were easily 3 inches thick.
They do a A,B,C year cycle each of the three years is dedicated to a different Gospel, in addition to readings from Old Testament and Epistles.
Year A – Gospel of St. Matthew Year B – Gospel of St. Mark Year C – Gospel of St. Luke
(post is archived)