The Proper Liturgy for Good Friday begins at Noon, the time our Lord Jesus Christ was nailed to the cross on Golgotha. This is the central portion of our Triduum worship that began on Maundy Thursday and continues until the Easter Vigil.
The Readings are:
Genesis 22:1–18 or Isaiah 52:13–53:12
Psalm 22:1–21 or 22:1–11 or Psalm 40:1–16 or Psalm 69:1–22