The seventh day weekly Sabbath is the high Sabbath of the Passover week. No place in Scripture are either holy convocations called the Sabbath. Exodus 12:16.
Deuteronomy 16:1-8
"Observe the month of Abib, and keep the passover unto the Lord thy God: for in the month of Abib the Lord thy God brought thee forth out of Egypt by night. Thou shalt therefore sacrifice the passover unto the Lord thy God, of the flock and the herd, in the place which the Lord shall choose to place his name there. Thou shalt eat no leavened bread with it; seven days shalt thou eat unleavened bread therewith, even the bread of affliction; for thou camest forth out of the land of Egypt in haste: that thou mayest remember the day when thou camest forth out of the land of Egypt all the days of thy life. And there shall be no leavened bread seen with thee in all thy coast seven days; neither shall there any thing of the flesh, which thou sacrificedst the first day at even, remain all night until the morning.
Thou mayest not sacrifice the passover within any of thy gates, which the Lord thy God giveth thee: But at the place which the Lord thy God shall choose to place his name in, there thou shalt sacrifice the passover at even, at the going down of the sun, at the season that thou camest forth out of Egypt. And thou shalt roast and eat it in the place which the Lord thy God shall choose: and thou shalt turn in the morning, and go unto thy tents. Six days thou shalt eat unleavened bread: and on the seventh day shall be a solemn assembly to the Lord thy God:
thou shalt do no work therein."
The name used here is Abib, the name today is Nisan. This month is not the first month of the current Hebrew Calendar. The month of the day of Atonement, the third yearly feast is the first month of the Hebrew year.
Nisan was the first month they left Egypt.
The 6 days of the unleavened bread did not start on the 14th. The 7th day of this feast is the Passover. You argue it was from the 14 until the 21st. That would make Wednesday the 21st of 30AD a Sabbath day, still seperate from the Sabbath day on the 17th.
Look at Exodus 12 again:
"This month shall be unto you the beginning of months: it shall be the first month of the year to you. Speak ye unto all the congregation of Israel, saying,
In the tenth day of this month they shall take to them every man a lamb, according to the house of their fathers, a lamb for an house:"
They no longer use this month as the first month of the year. The preparation starts on the 10th day, not the 14th. So not sure where you get the 14th to the 21st. Even in Leviticus 23:4-8 God says both the first and seventh days are Sabbath days.
"These are the feasts of the Lord, even holy convocations, which ye shall proclaim in their seasons. In the fourteenth day of the first month at even is the Lord's passover. And on the fifteenth day of the same month is the feast of unleavened bread unto the Lord: seven days ye must eat unleavened bread.
In the first day ye shall have an holy convocation: ye shall do no servile work therein. But ye shall offer an offering made by fire unto the Lord seven days:
in the seventh day is an holy convocation: ye shall do no servile work therein."
So if the 15th is the first day or the last day of this feast, the 15th is always the feast day, and a Sabbath day. The 14th was always the day of preparation for the 15th. Jesus was crucified on the day of preparation, the Wednesday, not on the Sabbath, Thursday.
Need I remind people? Sabbath means rest, not seven. No servile work defines the Sabbath whether the first day or the last day of this feast. That this feast started, where they ate unleavened bread for 6 days on the 9th would make more sense than the 15th being the first day and the 21st being the final day. But there is no reference to dates other than the 10th, the 14th, and the 15th in these Scriptures. But still the 15th is a Sabbath whether the 1st day or the 7th day of this feast. And you have not proven that the 15th of Nisan in 30AD was on a Wednesday. Wednesday was the day of preparation, always meaning work done the day before a Sabbath.
The online Calendar I use, timeanddate, shows the 15th on a Thursday in 30AD and on a Saturday in 33AD. That Calendar calls the month Nisan, and that is the month Passover is celebrated in all years. The sight has this disclaimer:
"For some early years, holidays are not shown
Local holidays are not listed, holidays on past calendars might not be correct."
My argument is: is the 15th wrong or do people just not agree on how the computer generated the Calendar?
If the computer is wrong, then the 14th on Friday in 33AD would also be suspect. So not sure how you think the 15th should be on a Wednesday?