There was a man by the name of Joseph, a member of the Jewish High Council, a man of good heart and good
character. He had not gone along with the plans and actions of the council. His hometown was the Jewish village
of Arimathea. He lived in alert expectation of the kingdom of God. He went to Pilate and asked for the body of Jesus. Taking him down, he wrapped him in a linen shroud and placed him in a tomb chiseled into the rock, a tomb never yet used. It was the day before Sabbath, the Sabbath just about to begin. Luke 23:50-54 The Message
So Jesus' body rested in the tomb during the Sabbath hours. (From
daily prayer message by praygal).

This is something most people forget, that Jesus kept the Sabbath holy even in the grave. It was a day of rest for all on earth and in heaven. But Sunday was not a symbol of creation as Saturday is so the rest was over, it was back to work and then Jesus rose from the grave. He conquered death for not only Himself but eventually for us.
1 Thessalonians 4:13-18 "Brothers, we do not want you to be ignorant about those who fall asleep, or to grieve like the rest of men, who have no hope. We believe that God will bring with Jesus those who have fallen asleep in him. According to the Lord's own word, we tell you that we who are still alive, who are left till the coming of the Lord, will certainly not precede those who have fallen asleep. For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first. After that, we who are still alive will be caught up together with them in the clouds to meet the Lord in the air. And so we will be with the Lord forever. Therefore encourage each other with these words." NIV