Record few Americans believe in Biblical inerrancy.

[John V]

What about it? What do you find problematic?

John contradicts Mark.

How so? Can you actually explain your position? I'm guessing that you're incorrectly reading evening as meaning specifically after sundown, but I can't respond unless you actually use words and make a case.

FWIW, consider the parallel passage in Luke. He's more specific as to the time:

Luke 23
50 Now behold, there was a man named Joseph, a council member, a good and just man. 51 He had not consented to their decision and deed. He was from Arimathea, a city of the Jews, who himself was also waiting for the kingdom of God. 52 This man went to Pilate and asked for the body of Jesus. 53 Then he took it down, wrapped it in linen, and laid it in a tomb that was hewn out of the rock, where no one had ever lain before. 54 That day was the Preparation, and the Sabbath drew near.

Per Mark 15:
42 Now when evening had come, because it was the Preparation Day, that is, the day before the Sabbath, 43 Joseph of Arimathea, a prominent council member, who was himself waiting for the kingdom of God, coming and taking courage, went in to Pilate and asked for the body of Jesus.

Evening again is not a specific word meaning after sundown. Evening includes the latter part of one Jewish day and the beginning part of the next. The context here - that haste is needed - indicates that it was the latter part of a day. This agrees with John.

Matthew 27 also references evening in v57. But, we can see that he meant that Jesus died on preparation day in v62:

62 On the next day, which followed the Day of Preparation, the chief priests and Pharisees gathered together to Pilate, 63 saying, “Sir, we remember, while He was still alive, how that deceiver said, ‘After three days I will rise.’ 64 Therefore command that the tomb be made secure until the third day, lest His disciples come by night[m] and steal Him away, and say to the people, ‘He has risen from the dead.’ So the last deception will be worse than the first.”

The Pharisees obviously wouldn't have allowed a whole day for the body to be taken, and only then asked for a guard.

Mark, being the shortest gospel, is less detailed than the others and somewhat ambiguous in the wording. That's all you've got.