For as Jonah was three days and three nights in the belly of the whale, so will the Son of Man be three days and three nights in the heart of the earth.
(Matthew 12:40 WEB)
About the ninth hour Jesus cried with a loud voice, saying, “Eli, Eli, lima sabachthani?” That is, “My God, my God, why have you forsaken me?”
(Matthew 27:46 WEB)
Just my 2 cents: Friday 2pm (approx) to Sunday morning gives us 40 or so hours and not “three days and three nights(72 hours).