Maundy Thursday, also known as Holy Thursday, Covenant Thursday, Great and Holy Thursday, and Thursday of Mysteries, is the Christian feast or holy day falling on the Thursday before Easter that commemorates the Last Supper of Jesus Christ with the Apostles. The feast solemnly commemorates the institution of the Eucharist and is the oldest of the observances peculiar to Holy Week. In Rome various accessory ceremonies were early added to this commemoration, namely the consecration of the holy oils and the reconciliation of penitents, ceremonies obviously practical in character and readily explained by the proximity of the Christian Easter and the necessity of preparing for it. Holy Thursday could not but be a day of liturgical reunion since, in the cycle of movable feasts, it brings around the anniversary of the institution of the Liturgy. On Holy Thursday the ringing of bells ceases, the altar is stripped after vespers, and the night office is celebrated under the name of Tenebræ. The Mass of the Lord's Supper initiates the Easter Triduum, the three days of Friday, Saturday and Sunday that commemorate the Passion, Death and Resurrection of Jesus Christ..