I do not have to square it...if you want to believe that God used actual 24 hr days, a literal interpretation, that is your choice...I, and millions of other Christians, dont agree with this narrow literal interpretation...I believe God is outside of time as we think of it, He is not limited to our notion of hour, or day, or any other time frame...Gods time frame, is His own, unknown to us...
Now you will obviously disagree...so be it...
Have you checked into Augustine's notion of time? Moreover, are you aware of a purely empirical definition of time?
Do you believe that their was a Great Flood that covered that Earth, or was that just in the Bible for some drama?