Vatican City, 21 March 2013 (VIS) – On Holy Thursday, 28 March, the Holy Father Francis will celebrate the Chrism Mass in St. Peter's Basilica in the morning and then, at 5:30pm in the afternoon, will go to celebrate the Mass of the Lord's Supper at the Casal del Marmo youth detention centre instead of the Basilica of St. John Lateran, where it had been traditionally held in past years