OK, with Pentecost coming I decided to post this. As I stated, before Vatican II, Pentecost was an octave. I don’t really know why they got rid of it, Pentecost is the birth of the Catholic Church, but I’m sure they had their reasons. Here are the Epistle and Gospel readings for each day of the old Octave. Whit Monday and Whit Tuesday used to be Holy Days of obligation.
Pentecost Sunday: Acts 2:1-11, John 14:23-31.
Monday in Octave of Pentecost: Acts 10:34, 42-48, John 3:16-21.
Tuesday in Octave of Pentecost: Acts 8:14-17, John 10:1-10.
Ember Wednesday of Pentecost: Acts 2:14-21 & Acts 5:12-16, John 6:44-52.
Thursday in Octave of Pentecost: Acts 8:5-8, Luke 9:1-6.
Ember Friday of Pentecost: Joel 2:23-24, 26-27, Luke 5:17-26 .
Ember Saturday of Pentecost: Joel 2:28-32; Lev 23:9-11, 15-17, 21; Deut 26:1-11; Lev 26:3-12; Dan 3:47-51, 52-56; Rom 5:1-5, and Luke 4:38-44.
Feast of the Most Holy Trinity: Rom 11:33-36, Matt 28:18-20.
I found by reflecting on these reading that I grew for a greater appreciation of this octave, it gives reflection on the birth of the church.