Thursday Night was for keeping watch after the Last Supper when Jesus told the disciples he loved them all but they could not go where he was going. He then went to the Garden of Gethsemane and is said to have prayed 3 times. He asked the disciples to keep watch but they are said to have fallen asleep. Obviously this upset Jesus. He was then arrested and taken to the Sanhedrin or Jewish Court. The matter was then referred to Pontius Pilate the Roman authority in Judaea who washed his hands of the matter as he believed that Jesus was innocent. Jesus was then handed over for crucifixion by the chief priests of the Jews.
Friday To this end Jesus found himself being crucified on a Cross at the “Place of a Skull” flanked by two thieves, for declaring that he was The Son of God. One of these criminals defended Jesus, who in turn promised that he (Jesus) and the criminal would be together in paradise when he is done with conquering Death.
Saturday Jesus descends to Hell to wrestle with the underworld and obtain the Keys to Heaven. This is based on what Jesus said to Simon Peter. ”And I tell you, you are Peter, and on this rock I will build my church, and the gates of hell shall not prevail against it.
I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.” Matthew 16:16-19
Sunday – Christians celebrate the resurrection of Jesus. All four gospels report that women were the ones to find the tomb of Jesus empty, although the number varies from one (Mary Magdalene) to an unspecified number. According to Mark and Luke, the announcement of Jesus’ resurrection was first made to women.
After they found the empty tomb, the gospels indicate that Jesus made a series of appearances to the disciples. He was not immediately recognizable, according to Luke.:p.277 His final appearance is reported as being forty days after the resurrection when he was “carried up” into heaven where he sits on the right hand of God.[Mark 16:19] 
At a later time, on the road to Damascus, Saul of Tarsus, then the arch-persecutor of the early disciples, was converted to Christ following an extraordinary vision and discourse with Jesus which left him blind for three days.[Acts 9:1–20] (Saul later became known as Paul the Apostle.)[Acts 13:6]  He became one of Christianity’s foremost missionaries and theologians.[1 Cor. 15:6] 
GW: In a way Paul is more important than Peter. Note that the ”S” in his name is changed to a ”P”. The ”snake” is finally driven from the scene. Peter & Paul. Saul = The Beast = 311. Paul = Easter = 281. See http://www.gematrix.org for further details.