Holy Week XII. In this Mass, the bishop blesses separate oils for the sick (used in Anointing of the Sick), for catechumens (used in Baptism) and chrism (used in Baptism, but especially in Confirmation and Holy Orders, as well as in rites such as the dedication of an altar and a church). Tenebrae (Latin for "shadows" or "darkness") is celebrated within Western Christianity on the evening before or early morning of Maundy Thursday, Good Friday, and Holy Saturday. Tenebrae is distinctive for its gradual extinguishing of candles while a series of readings and psalms is chanted or recited. Tenebrae services are celebrated
Holy Week the liturgical day starts from the evening before a calendar day, the prayers of Palm Sunday begin on the evening of Lazarus' Saturday. Throughout Holy Week, a paschal service is conducted each evening, starting on Sunday night (the eve of Monday), and every morning, up until Easter. These paschal services take place in the middle of the church, not on the altar, because Jesus suffered and was crucified on Golgotha, outside of Jerusalem. The altar is bared of all its coverings and relics. Each day service is divided into 5 "hours"; The First Hour, The Third Hour, The Sixth Hour,