An unexpected meeting

Contrary to my supposition, this morning's meeting of the Holy Father with the heads of the curial dicasteries was an unscheduled one, according to the invaluable Rorate Caeli.  Certain 'ministry' or 'department' heads have 'standing' audiences with the Supreme Pontiff (although I've never bothered to get straight whose is when) that aren't noted in the Bollettino: I think, e.g., that the prefect or substitute of the Congregation for the Doctrine of the Faith is received every Friday but wouldn't bet more than a couple of bucks on it.