Supposedly the Holy Father overlooked the fact he permitted the suppression of the Octave of Pentecost as a consequence of the liturgical reform, and he wept on Whit Monday when a sacristan explained why the vestments for Mass were green instead of red.
The story makes the rounds on the Monday after Pentecost. Watch for it today.
Reminds me of the story of how John XXIII supposedly wept after he read the Third Secret. Other sources say he didn't - he simply passed it off and remarked it did not apply to "Our times".
Back to Ordinary Time for the Ordinary Form.