WDTPRS: Fr. Z rants & Augustine on Pentecost and the Cardinal on YouTube
Father Zuhlsdorf explains why this "ought to be" the Monday in the Octave of Pentecost on one of his PODCAzTs while citing Saint Augustine. He also has a link to a YouTube of Cardinal Castrillon Hoyos speaking in the Introduction of the F.S.S.P.'s TLM training DVD on the TLM and His Eminence's views on its availability. Fascinating!