While I don't know if you are right or not, I wasn't there, I do suspect you could be correct. Thursday would work also, Thurs evening one night, Friday one night and Saturday one more night.
The correctness of these dates however has never disturbed me. The Holy Ghost tells me He arose from the dead and still lives. That's enough for me.
Most people don't understand that High Holy Days were considered Sabbath days. When Jesus Was Crucified Passover was on Friday before the regular Sabbath, He would have had to be Crucified on Thursday at the latest to be off the cross and interred prior to the Sabbath.
We think the Roman guards to have been cruel to be breaking the legs of those on the cross but it was an actual blessing. Dying on the cross could take several days of horrible pain and suffering once the legs are broken you can't breath and you die quickly.
The suffering we talk about of Christ on the cross is not really the suffering we need to be concerned with. He died there. He didn't have to die, after all He was God in flesh He could have been translated as was Elijah and taken up to Heaven. No the suffering we need to think about was in the garden where He took upon Himself our sins which caused Him to sweat blood because of the greatness of the pain we gave Him. On the cross He simply “gave up the ghost”, something we cannot do. Don't misunderstand me, I'm saying Christ's dying on the cross was easy, but, millions have died on crosses through the centuries. Only one has borne my sins and been punished for them. The ghost leaves us in death but we can't command it to leave as He could.
Just to clarify...the other two had their legs broken but not Jesus. This was to fulfill an old testament prophecy that no bone of his would be broken. Instead he had the sword cast through his side.