We have sunlight.

We have rotation of the earth since there is 'day' and 'night'.

We have grass, trees, fruit, photosynthesis.

Sea life is abundant.  Sea life was never destroyed.

How long did it take to rotate the earth?  How long was a day?   There is no way to know.  II Peter 3:8b puts it this way: "...one day is with the Lord as a thousand years, and a thousand years as one day."  The earth could have been rotating slow, or fast.  God doesn't say.  If science proves that days were longer than 24 hours.  Fine.  If science proves that days were shorter than 24 hours.  Fine.  Just be sure it is proof and not theory.  Science will be hard pressed to prove it one way or the other.

But at this point we do know some of what was there, and some of what was going on.  And the stage is being set for a world transformation.

Gen. 1:13  "And the evening and the morning were the third day."