I'm sorry....you are misinterpreting those "Levitical Dates".
[Leviticus 23:5-6] 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.
Passover, the 14th; First Sabbath, the 15th; The weekly Sabbath was last mentioned in verse 3.
[Leviticus 23:7-8] 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.
The First Day of Unleavened Bread is here identified as a Sabbath day. It is further identified in the New Testament by John in [19:31] The Jews therefore, because it was the preparation, that the bodies should not remain upon the cross on the sabbath day, (for that sabbath day was an high day,) besought Pilate that their legs might be broken, and that they might be taken away.
And, of course we know that it is the 15th because John earlier tells us in [19:14].....And it was the preparation of the passover, and about the sixth hour: and he saith unto the Jews, Behold your King. This identifies the day as the 14th. Tomorrow will be the 15th and according to John, a High Sabbath.
[Leviticus 23:9-11] And the LORD spake unto Moses, saying, Speak unto the children of Israel, and say unto them, When ye be come into the land which I give unto you, and shall reap the harvest thereof, then ye shall bring a sheaf of the firstfruits of your harvest unto the priest. And he shall wave the sheaf before the LORD, to be accepted for you: on the morrow after the sabbath the priest shall wave it.
No one can argue the point that the immediate and extremely plain context is the First Sabbath of Unleavened Bread....the 15th of Abib. In context and without pretext then.......verses 8-11 flow out of those texts and do not jump to any mention of the weekly Sabbath!
***No one can argue the point that the immediate and extremely plain context is the First Sabbath of Unleavened Bread....the 15th of Abib.***
Just one little problem... what if the harvest comes a couple of weeks earlier or later than the Passover week? The waving of the firstfruits is to be done during the first week of harvest AFTER THE SABBATH in those weeks, again it is SUNDAY.