There are 6 verses in Genesis ch. 1, {5, 8, 13, 19, 23, 31}, which in many accurate translations - except two significant ones that I will consider below - read, respectively:
"And there was evening and there was morning, {one | a 2nd | a 3rd | a
4th | a 5th | a 6th} day."
The issue is whether the evening and morning in each of these 6 verses:
a. came BEFORE the divine activity narrated immediately before the verse, so that God performed that activity during the daytime which began with the morning in question, or
b. came AFTER the divine activity narrated immediately before the verse, so that the evening came right after God had finished performing his activity, and the following morning marked the end of day n and the beginning of day (n+1).
In brief, the sequence in each option is:
a. evening when day n begins, morning of day n, God's work of day n,
b. God's work of day n, evening of day n, morning when day n ends and day (n+1) begins.
To assess these options, we must note that almost every verse of Gen ch. 1 begins with a waw-consecutive, the exceptions being verses 1 & 2. This is a construction that usually indicates chronological sequence but can sometimes indicate logical consequence, so that an event introduced this way may be chronologically prior to an event mentioned immediately before it but is its logical consequence. Thus, after the text described an initial state of darkness and narrated the subsequent creation of light, the logical consequence is to frame the time elapsed so far as an evening that started nightime followed by a morning that started daytime, which together comprise one day, whereby days are reckoned evening to evening.
Noting that interpreting the initial waw consecutive of the 6 verses in question as meaning logical consequence instead of chronological sequence is unequivocally reflected by replacing the first "And" in these verses with "So", we see that this is the case of two contemporary Messianic translations, the Complete Jewish Bible (CJB, 1998) and the Tree of Life Version (TLV, 2014). They do seem to have good knowledge of Hebrew.
Two additional arguments for evening to evening reckoning.
Since the time elapsed before the creation of light is left out of the 1st day in morning to morning reckoning, for Ex 20:11 to be accurate in that reckoning, either we should hold "creation ex materia" instead of "creation ex nihilo", or the verse should say, "For in six days, plus a few initial irrelevant hours, the LORD made the heavens and the earth, [...]".
In this passage from John's Gospel:
Now on the first day of the week, Mary Magdalene comes to the tomb
early, it being still dark, and she sees the stone having been removed
from the tomb. (Jn 20:1, Berean Literal Bible)
the Apostle is stating most clearly that "the first day of the week", i.e. Sunday, had already begun while "it being still dark", i.e. before sunrise. Therefore, for John calendar days began at sunset. (Unless an argument were made that he used Roman time reckoning according to which calendar days begin at midnight, which IMV would be preposterous).
Finally, I will provide a summary of both time reckoning schemes adding the respective consequences if, noting that for the writer of Genesis ch. 1 the seventh day was still ongoing, we want to fit Jesus' life, passion and resurrection in the theological time framework of that chapter.
-----------------------------------------------------+-----------------------------------------+
{Sd: [v.] State of deficiency / Da: v. Divine action}| v{evening/morning}: day{night/day} |
-----------------------------------------------------+-----------------------------------------+
Da: 1 (*). God creates the universe ex nihilo. | evening to evening | morning to morning |
-> Time starts to elapse. | day reckoning | day reckoning |
-----------------------------------------------------+--------------------+--------------------+
Sd: 2. Darkness is over the surface of the deep. | 5e: 1n | None |
-----------------------------------------------------| |--------------------+
Da: 3. God creates light. | 5m: 1d | 1d |
5. "Day" & "night". | | |
-----------------------------------------------------+--------------------| |
Sd: Water fills all of space. | 8e: 2n | 5e: 1n |
-----------------------------------------------------| |--------------------+
Da: 6-7. God makes firmament by separating waters. | 8m: 2d | 5m: 2d |
8. "Heavens". | | |
-----------------------------------------------------+--------------------| |
Sd: Earth is covered by water. | 13e: 3n | 8e: 2n |
-----------------------------------------------------| |--------------------+
Da: 9. God makes dry land appear by gathering waters.| 13m: 3d | 8m: 3d |
10. "Earth" & "seas". | | |
11-12. God makes plants. | | |
-----------------------------------------------------+--------------------| |
Sd: Heavens are empty of luminaries. | 19e: 4n | 13e: 3n |
-----------------------------------------------------| |--------------------+
Da: 14-18. God makes sun, moon and stars. | 19m: 4d | 13m: 4d |
-> Heavens is filled with luminaries. | | |
-----------------------------------------------------+--------------------| |
Sd: Seas & heavens are empty of life. | 23e: 5n | 19e: 4n |
-----------------------------------------------------| |--------------------+
Da: 20-22. God makes sea creatures and birds. | 23m: 5d | 19m: 5d |
-> Seas & heavens are filled with animal life. | | |
-----------------------------------------------------+--------------------| |
Sd: Earth is empty of animal and human life. | 31e: 6n | 23e: 5n |
-----------------------------------------------------| |--------------------+
Da: 24-30. God makes animals and CREATES (bara) man. | 31m: 6d | 23m: 6d |
-> Earth filled with animal & human life. | | |
-----------------------------------------------------+--------------------| |
| Adam's sin: 7n | 31e: 6n |
| |--------------------+
| JC's life: 7d | 31m: 7d |
+--------------------| |
| JC's passion: 8n | Adam's sin: 7n |
| |--------------------+
| JC's rising: 8d | JC's life: 8d |
|....................| |
| JC's passion: 8n |
|--------------------+
(*) Alternatively, v. 1 could be a title for the narration in ch. 1. | JC's rising: 9d |
|....................|