Armstrong, his Worldwide Church of God, and the many offshoots in existence today, insist on a Wednesday crucifixion. A Wednesday crucifixion idea is also held by other churches, not only Armstrong organizations. Armstrong uses it to criticize the more commonly held belief of Friday. It is important to address the counting method associated with this theory which requires there be a third night, based on Matthew chapter 12 (Jonah). This verse is emphasized by the proponents of the Wednesday crucifixion, and it is critical to consider whether their counting method is supported by the scriptures/custom generally. All of the other verses concerning the timing of the crucifixion need to be considered. I examine the theory in this link . It takes you to a Post I have made on Quora. There is another commentary within my Blog site wherein I examine Matthew chapter 12 in some more detail.