Mark 16:2
"And very early in the morning the first day of the week, they came unto the sepulchre at the rising of the sun."
Cross References (ranked by relevance)
John 20:1
The first day of the week cometh Mary Magdalene early, when it was yet dark, unto the sepulchre, and seeth the stone taken away from the sepulchre.
Matthew 28:1
In the end of the sabbath, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulchre.
Luke 24:1
Now upon the first day of the week, very early in the morning, they came unto the sepulchre, bringing the spices which they had prepared, and certain others with them.