There's an important point raised in the article concerning timing.
Mat 12:38 Then some of the scribes and Pharisees answered, saying, "Teacher, we want to see a sign from You."
Mat 12:39 But He answered and said to them, "An evil and adulterous generation seeks after a sign, and no sign will be given to it except the sign of the prophet Jonah.
Mat 12:40 For as Jonah was three days and three nights in the belly of the great fish, so will the Son of Man be three days and three nights in the heart of the earth.
This is a reference to the timing of the resurrection of Christ. It is the only SIGN that Jesus said he would give. It's significant and it's a technical detail that proves who is the messiah and who is not.
Wouldn't this be the case if Jesus was crucified on Fri and died at 3PM.
Fri day 3PM (day), Fri 6pm-12AM (Night)
Sat 12AM-6AM (night), Sat 6AM-6pm (day), Sat 6PM-12AM (night)
Sun 12AM-6PM (night), Sun 6AM-day RESURRECTION.
I know there is an overlap on Sat, but I do see the 3 days and 3 nights.