Did you know the 15th is an annual Sabbath?
In post#157, I pointed out that the 15th is a Holy Convocation.
No work was to be done except that which was necessary to provide for the Chagigah/free will offering.
Therefore, because it was the Preparation Day, that the bodies should not remain on the cross on the Sabbath (for that Sabbath was a high day), the Jews asked Pilate that their legs might be broken, and that they might be taken away. (John 19:31)
The 15th is an annual Sabbath referred to by John as a high day. The Greek word for high is megas meaning great.
The word 'preparation' in John 19:31 is 'paraskeue'. It is the preparation necessary for the weekly seventh day Sabbath.
That weekly Sabbath was a 'high day'(yes, megas) because whenever one of GOD's appointed times coincided with a seventh day weekly Sabbath, that Sabbath was considered doubly Holy.
The LORD Jesus had to be buried before sundown which was the beginning of the seventh day Sabbath and the 'counting of the Omer'.
You're still ignoring the narratives of Matthew, Mark and Luke which give a very clear timeline.
Jesus and His disciples kept the Passover.