It is really that simple.
Then be my guest. Explain to me how "evening and morning" can refer to anything other than what we understand them to be.
It seems to me that the only alternative is to interpret them as metaphorical, and metaphorical language always is symbolic of an underlying related truth.
Clearly then, this underlying related truth must correlate to some type of dichotomous division of those eons, as represented metaphorically by days.
What then is this truth....this distinguishable division of the eons?
If you are simply interested in dissecting the Biblical text in order to have it conform to certain preconceived notions about time and space just for the sake of argument then you are probably posting to the wrong FReeper.
From what I have gleaned on this thread, I conclude that you really do not know a whole lot about what you are talking about regarding the Bible, but perhaps you did take a Divinity Course or more along the way to this particular day.
Well, I have been there myself as well. Presumably you'll gather up all of your selected resources concerning the Yawhist, the Elohist, the Priestly Writer, the Deuteronomist and whatever else that the eggheads have come up with recently in order to justify their predetermined conclusions concerning primary source of the Pentateuch.
Well, personally, I tired of that game of debating folks on these issues, who had their minds set in stone long ago.
Go play, have fun, make a fool of yourself with your supposed understanding of what really are very simple matters.
I'll jump in from time to time if I happen to notice you trying to beat up on folks with your superficial undisciplined knowledge.
Really though, if I wanted to be "bored" I'd have taken more woodworking classes.