Laudetur Iesus Christus! Sunday marks the beginning of the 2 week period within Lent called Passiontide, where the faithful focus more specifically on Our Blessed Lord’s Passion. As Dr. Mike Foley notes, sacred images are veiled, and the Judica Me, and the Glori Patri, are omitted from the Mass henceforth until Easter, as noted in his weekly reflection on Sunday’s propers: http://www.newliturgicalmovement.org/2021/03/the-secret-for-passion-sunday.html