Brothers, God's word below and your statements as people familiar with Jewish customs, confirm my understanding of Genesis. The days of the week of creation are from morning to morning and God's calendar is based on the time zone of creation, where the days of the month fall in Jerusalem from evening to evening. The second half of Nissan 14 and the first half of Nissan 15 both fall on the same day of the week in Jerusalem, from morning to morning.
Now came the day of unleavened bread, in which the Passover must be sacrificed. (Luke 22:7 CLV)
This is further confirmed by “Rabbi Yehuda Shurpin”, although he sees it as an exception rather than the established definition of the days of the week of creation in Genesis from morning to morning.
The meat of their fellowship offering of thanksgiving must be eaten on the day it is offered; they must leave none of it till morning. (Leviticus 7:15 NIV)
The Rabbi admits that the previous passage assumes a day from morning to morning, although he does not consider it as the definition established in Genesis, but as an exception in his comment below. There may be many other passages that would benefit from understanding the days as established in Genesis to better understand all the messages of God in His word.
if you were given one day to eat an offering, the day consisted of the daytime followed by its night (unlike all other purposes, for which Jewish calendar days consist of the night followed by the day). Thus, as far as sacrifices are concerned, the night after a sacrifice is brought is an extension of the day it is brought. Therefore, when it comes to the celebration of the Passover sacrifice, while it was eaten on the 15th, it was considered to be the same day as the 14th. (
Rabbi Yehuda Shurpin)
United in our hope of the soon return of Jesus, Jorge