Since when did God transfer the onus of Bible interpretation on to science?
God gives us the Bible, and God gives us science. He does not contradict himself. By science, I mean the scientific method
and physical evidence like fossil evidence. God wants us to know what He has done. He gives us the ability to understand.
Romans 1:20 "For the invisible things of him from the creation of the world are
clearly seen, being understood by the things that are made,
even his eternal power and Godhead; so that they are without excuse"
The day you seem to be talking about, what you call a "literal day" - God did not create until the fourth day.
Genesis 1:
14 And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:
15 And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
16 And God made two great lights; the greater light to rule the day, and the lesser light to rule the night:
he made the stars also.
17 And God set them in the firmament of the heaven to give light upon the earth,
18 And to rule over the day and over the night, and to divide the light from the darkness: and God saw that
it was good.
19 And the evening and the morning were the fourth day.