I have changed my trad Catholic calendar this year to the Priestly Fraternity of Saint Peter’s. I noticed on April 25th, there was no typical feast of Saint Mark, yet the Major Rogation Day remained. I thought this was a mistake, so I contacted them. Here was the gracious response of Claudio Salvucci, Communications Director for FSSP:
“In the specific case of April 25th this year, the omission of St. Mark was not an oversight. The days of Holy Week and Easter Week are privileged to the extent that they cannot be displaced by another feast, so St. Mark is simply suppressed in favor of Easter Friday this year. Though I believe in some cases the feast can be postponed until the Monday following Low Sunday if, for example, it is a patronal feast for a diocese or parish. The same principle is why the Annunciation was postponed to April 8th last year…
[Regarding the Major Rogation Day] Part of the reason is that the 1962 Missal says explicitly that when the feast of St. Mark is transferred, the Rogation procession is not transferred. Unless Apr. 25th falls on Easter Monday, in which case the procession is moved one day to Easter Tuesday.”
Mr. Salvucci also sent me some FSSP Liturgical Ordo notes (how cool is that):
“April 25, 2025: Greater Litanies...The ferial Mass of the Octave of Easter is celebrated with a commemoration of the Major Litanies, even at sung Masses. There is no commemoration of St. Mark...The Rogation Mass can be celebrated on April 25th only if the Mass be preceded by the Litany and Procession or other appointed supplications.”
I hope that clears up any confusion any other liturgical calendar nerd out there might have had:)