If you consult Ginrich or Bauer or any other lexicon or thing, all published AFTER Bauer's, for the word 'paraskeueh' - 'preparation' Noun, you will find the same conglomeration, because they are all the NT incidences of the word.
The incidences are placed in the order of the Books or Gospels in the NT while all of them supposedly refer to the supposedly ONLY historical occurrence of 'The Preparation'. You will find that all these incidences are usually or virtually always, referred to in commentaries, as 'The Preparation or Friday'. WHILE NOT ALL mention 'Friday' as "The Preparation". John 19:14 is the one incidence that does not refer to 'Friday' as "The Preparation".
For three main reasons why not:
1) The most obvious reason literally, the description by name-of-the-day differs. John 19:14 defines and limits "the Preparation Day" it speaks of by calling it "the Preparation-OF-THE-PASSOVER", Abib 14 "the FIRST day (of passover) when they KILLED the passover sacrifice" Mark 14:12 Matthew 26:17 Luke 22:7 in John 13:1 to verse 30 because of all the teachings placed within the span of That Day. Note that this day isn't called a 'preparation' day in the other Gospels.
2) The even more telling reason, its POSITION in historical chronological sequence or development. In other words, WHAT HAPPENED after it has been said that "It was The Preparation of the Passover 6 a.m. ...."? The Crucifixion proceeded and was done That Whole Selfsame Day! As in the other Gospels, until our Lord Jesus had died mid-afternoon its "ninth hour" That Selfsame Day of "twelve hours in the day".
3) The logical, that is, inevitable, resultant reason, The textual occurrence or place of the word "Preparation" or name rather, "Preparation-of-the-Passover". It is placed at the beginning of daylight on "the day before the Feast (Day)", "early" "six o'clock" its "morning" according to the other Gospels. Which was the beginning of the latter halve of it! It would end sunset after its "twelfth hour", yes?! Exactly! Just what we see. Jesus gave the ghost, died, mid-afternoon "the ninth hour" That Day, John 19:30. Nineteen verse thirty... So, what does one expect next?
Do you expect That Whole Selfsame Day to start all over again?! Madness, no! One would expect the day AFTER it to begin! To begin when? To begin as soon as the sun has set beginning the new day's "evening", that's when!
...aag, nonsense turkeys' gobblings...
Read John 19:31, please, just read it, please.
The stupid John, here he starts That Whole Selfsame Day over again! And the stupid other Gospel writers too... Mark in 15:42, Matthew in 27:57, and Luke .. well yes, too, in 23:50, because he too here tells of Joseph who arrived there and started undertaking to obtain the body of Jesus... of Jesus who was not even betrayed yet, not denied yet, not delivered over to be crucified yet That Selfsame Night yet! So does one THINK hey?