Maundy Thursday is generally held on the morning of Maundy Thursday, but may in some dioceses take place on another day during Holy Week. It is often the largest annual gathering of clergy and faithful held in most dioceses. In some dioceses, attendance is sufficiently significant that, due to limited seating, tickets are distributed to parishes. The Mass is a celebration of the institution of the priesthood with Jesus' words at the Last Supper, "Do this in memory of me." During the Mass, those present are called to renew their baptismal promises; priests/ministers and deacons also reaffirm their ministry by renewing the
Holy Week in Braga 313, and the determinations of the Council of Nicaea on the celebration of Easter. The first major testimony of the celebration of Holy week in Jerusalem, and the likely start of his imitation in multiple other places in the Christian world, is the travelogue Peregrinatio ad Loca Sancta or Itinerarium ad Loca Sancta (Pilgrimage / Itinerary to Holy Places) or, simply, Itinerarium Egeriae (Itinerary of Egeria) written by Egeria or Aetheria. This pilgrim was a woman of Gallaecia, probably even of Bracara Augusta (nowadays the city of Braga), that made his own pilgrimage to the Holy Land between 381 and