A high Sabbath is when a ceremonial sabbath falls on the seventh day Sabbath.
Thats one way to know the crucifixion was on a Friday. The Jews didn’t want Christ hanging on the cross on the Sabbath.
The other thing to understand is how these people reckon time. We don’t get to apply how we reckon time to how they did it.
The Bible narrative is dead clear.
Christ was executed on a Friday and He was dead BEFORE sundown on that day. The day ends at sundown, not midnight like the Romans count it.
Christ was dead, taken down from the cross and hastily was prepared for the tomb BEFORE the Sabbath. These people were keeping the Sabbath and they kept it during the crucifixion (as did Christ BTW).
Since Christ was dead and in the tomb before the end of the day on Friday, that gets counted as ONE DAY. That’s inclusive reckoning of time. That’s day ONE.
Day TWO is Christ in the tomb. That would be the entire Sabbath, from sunset Friday (the end of Friday) to sunset at the end of Sabbath (Saturday). That’s day TWO.
The THIRD “day” starts at sundown Sabbath evening (the “evening and the morning“ are THE day) and continues until sunset Sunday evening (the FIRST day of the week). That means Christ was still in the tomb from sunset Sabbath until His resurrection at sunrise Sunday (the first day of the week). That is the THIRD day in the tomb.
That, and the fact that the crucifixion was on a high Sabbath proves that the wednesday crucifixion does not stand the test of the Bible and Bible chronology.
There is enough teaching materiel in the Crucifixion that an entire encyclopedia could be written and not cover all the details and facts proving the birth, life, ministry, execution, resurrection and ministry after the resurrection.
The execution was on Friday, and Christ spent three days in the tomb exactly as the prophecies said.