Mark 16:2

Very early on the first day of the week, just after sunrise, they went to the tomb.

Note Literally And very early on the first of the Sabbaths,

BSB · Berean Standard Bible
And very early in the morning the first day of the week, they came unto the sepulchre at the rising of the sun.
KJV · King James Version
Very early on the first day of the week, they came to the tomb when the sun had risen.
WEB · World English Bible
And very early on the first day of the week, they come to the tomb when the sun was risen.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

Mark 16:2
Mr. West supposes that the women made two different visits to the sepulchre, and, in consequence of that, two distinct reports to the disciples; that Mary Magdalene, with the other Mary and Salome, set out not only early, but very early in the morning, [lian proi ,] i.e., before the time appointed to meet Joanna and the other women there. (Lu 24:10). This interpretation, which is adopted by several eminent writers, is very probable, and reconciles the apparent discrepancy in the evangelists.
Matthew 28:1; Luke 24:1; John 20:1