Ken Brown,
re: "A Friday crucifixion is deception and trying to change what really happened."
Since you're not a sixth day of the week crucifixion advocate you probably don't know of any writing as requested in the OP.
BTW, what is there in Mark 16:1 that precludes the women from buying spices after the weekly Sabbath?
Shalom rstrats, concerning the OP, are you look for something like this:
Rabbi Eleazar ben Azariah, tenth in the descent from Ezra was very specific: "A day and a night are an Onah ['a portion of time'] and the portion of an Onah is as the whole of it" [J.Talmud, Shabbath 9.3 and b.Talmud, Pesahim 4a]
I know some will argue with this, but the Messiah was specific in giving HIS Sign (three days and three nights), and He also spake elsewhere, "
are there not twelve hours in the day?" Those who want to promote the Friday crucifixion, will ignore the specifics of what Yeshua said, and try to explain His words away with idioms. Seems pretty idiotic to me.
Concerning your last question. Basically one would have to consider that after the Sabbath (Saturday evening at night) shop owners would be opening up their shops to do business, after the Sabbath had past. This just doesn't seem very likely in that time frame, as electric lighting wasn't available, and nighttime business would be "in the dark."
One needs to look at Luke's account, as the women who followed Yeshua from Galilee, RETURNED and made the spices and ointments, and THEN rested on the Sabbath in obedience to the commandment (obviously, this would have been Friday at sunset). On the other hand, Mark is not writing from the perspective of the Weekly Sabbath when he says the women purchased the spices AFTER the Sabbath had past. His account is from the perspective of High Day Sabbath (15th day of 1st month, 1st Day of Unleavened Bread Sabbath) passing or ending, which would have been Thursday sunset. This would allow for Friday, the 16th day of the 1st month, to be AFTER the High Day Sabbath was PAST, but before the WEEKLY Sabbath had begun, making both Mark's and Luke's account work, along with giving us three days and three night of Yeshua being in the tomb. Hope this helps, and blessings in The Name, ImAHebrew.