According to the scriptures the resurrection occurred on the Sabbath....late. Verse 6 says He is risen!
Now, are you certain of your original statement? Why do you celebrate His resurrection on a Sunday morning? Scripture plainly tells us the resurrection happened on a late Saturday afternoon. I will agree with one thing....the pagans always celebrated "Easter" on a Sunday.
Scripture clearly tells us that the resurrection happened on the first day of the week. Mark 16:9
There are those who would like to deny Mark's statement by changing the punctuation but those same people contradict themselves. They want to claim that the women were present during the resurrection, based on Matt 28:1-6, but that they did not see Jesus until early on the first day of the week.,based on Mark 16:9. If the women had been there at the time of the resurrection they would have seen the resurrected Christ.
They fail to understand that Matthew is giving a summation while other writers are giving the details.
In addition to this, Mark 16:9-20 may have been added later by some dark ages monk to try and prove a Sunday morning resurrection.
As a final note....the women arrived at the tomb "Late on The Sabbath". Our Saviour had already risen. As the women were running from the tomb they met him and worshiped him. John verifies this in chapter 20:14-16. The women were not present at the resurrection....but arrived later.....yet still on the Sabbath, but now.... after sundown, it is the first day of the week when they greet the newly resurrected Saviour. This would be early Saturday evening "modern time". The notion of a Sunday morning resurrection was invented to "fit in" to the "Roman pagan celebration of Easter". And Easter always included a "Sunrise" service. John 20:1 confirms it was still dark.