Three Days and Three Nights

Why do we remember the crucifixion of Jesus on Friday as opposed to Wednesday? Is this a Roman Catholic thing? Because you can’t get three days and three nights in the tomb if Jesus was sacrificed on Friday. -- Michael Fiss · Member of Roman Catholicism: Exposed

Answer: The answer Michael has to do with the Feast of Tammuz.
Ezekiel 8:13 Again, He told me, “You will see them committing even greater abominations.” 14 Then He brought me to the entrance of the north gate of the house of the LORD, and I saw women sitting there, weeping for Tammuz. 15“Son of man,” He said to me, “do you see this? Yet you will see even greater abominations than these.”…

Tammuz was an idol of Chaldee extraction, as is plain from his name; which also is used for the tenth month, reckoning from the autumnal equinox, that is, the month of June; and Tammuz, as the object of worship, expresses the solar light in its perfection, as in the summer solstice. The Vulgate renders Tammuz, by Adonis; and that Adonis, according to the physical theology of the heathen, was the same as the sun, there is no question. Macrobius expressly affirms it, Saturnal., lib. 1. cap. 21, and says, that the tradition of Adonis being killed by a boar, means the diminution of the sun’s light and heat by winter. This departure of Adonis, or the sun, was lamented in the most frantic ceremonies of grief by the Phœnician and Assyrian women, who, on these occasions, used to prostitute themselves in honour of his vivifying power; and thus the Jewish women are described by our prophet, weeping for Tammuz, on the fifth day of the sixth month, that is, of August; at which time his death, by the winter boar, was drawing on apace. Tammuz was supposed to have been killed by a wild boar in mount Lebanon, whence flows the river Adonis, concerning which Lucian relates an opinion prevailing in these parts, that its stream, at certain seasons of the year, is of a bloody colour, which the heathen considered as proceeding from a kind of sympathy in the river for his death. https://biblehub.com/commentaries/benson/ezekiel/8.htm

Since Constantine as antisemitic, he worked at removing all trace of Judaism from Christianity. He would have his priest "Christianize" pagan feasts and holidays when he passed his Edit of Toleration in the third century.
This pagan feast occurred with Tammuz dying on Friday and being raised three solar days by the Sun god (Sunday).
This tradition passed on into Christianity and continues this day.

You can’t get three days and three nights in the tomb if Jesus was sacrificed on Friday. But now one seems to know the answer. I don’t that’s why am asking the question - Michael Fiss

I do know the answer...the problem is that we have Christians who do not study their Bible to find the answer.
Jesus prophesied:

For as Jonah was three days and three nights in the belly of a huge fish, so the Son of Man will be three days and three nights in the heart of the earth. Matthew 12:40

What difference does it make? He is risen! Paula Laine
I don't get hung up on all these dates, whether Christmas or Easter. - Ruth Werchola

The difference is this. It is whether Jesus is The Prophet foretold for Israel to expect. If what Jesus said here is not literally fulfilled in every detail....this would make Him a liar and a False Prophet. As Gentiles we miss how important this is.

Deuteronomy 18:17 The Lord said to me: “What they say is good. 18 I will raise up for them a prophet like you from among their fellow Israelites, and I will put my words in his mouth. He will tell them everything I command him. 19 I myself will call to account anyone who does not listen to my words that the prophet speaks in my name. 20 But a prophet who presumes to speak in my name anything I have not commanded, or a prophet who speaks in the name of other gods, is to be put to death.”21 You may say to yourselves, “How can we know when a message has not been spoken by the Lord?” 22 If what a prophet proclaims in the name of the Lord does not take place or come true, that is a message the Lord has not spoken. That prophet has spoken presumptuously, so do not be alarmed.

Jonah was three days and three nights in the heart of the earth.
This means for Jesus to fulfill this sign, He too had to be three days and three nights.

Even the Pharisee understood this.

Matthew 27:62 The next day (Thursday Nisan 15), the one after (Passover) Preparation Day (Wednesday, Nisan 14), the chief priests and the Pharisees went to Pilate. 63 “Sir,” they said, “we remember that while he was still alive that deceiver said, ‘After three days (Saturday, Nisan 18) I will rise again.’ 64 So give the order for the tomb to be made secure until the third day. Otherwise, his disciples may come and steal the body and tell the people that he has been raised from the dead. This last deception will be worse than the first.”

The Jews in the first century knew Jesus was Israel's foretold prophet because He literally fulfilled what He prophesied about. We are 2,000 years removed and miss the significance of Jesus' prophecy and are willing to accommodate as tradition that was Christianized paganism.

I have a detailed study on this...but it is too lengthy for a comment to Michael's question.