Luke 23:54

And it was the day of the Preparation, and the sabbath drew on.

The sabbath drew on ... This was not the ordinary sabbath (which came every Saturday), but the special "high day" (John 19:31) sabbath marking every 15th of Nisan (which could come on any day of the week); and this verse says that THAT sabbath "drew on," meaning that it would begin at sunset, after which the solemn Passover meal would be observed, the following twenty-four hours being, by God's special commandment, also called "a holy convocation" upon which "no servile work" could be done, and having full status as a holy sabbath. See Leviticus 23:7,8; Numbers 28:18,25, and Exodus 12:16. Since this sabbath was tied to the 15th of Nisan, it could fall on any day of the week; and, in the year 30 A.D., it fell upon Friday, which by Jewish reckoning began at sunset (about the time Jesus was buried) on Thursday, the day he died. See full discussion of this in my Commentary on Mark, under Mark 15:42. That this solemn Passover meal was actually eaten AFTER Jesus was dead and buried appears from John 18:28.