Genesis 1:4-5, “And God saw the light, that it was good, and God divided the light from the darkness. And God called the light Day, and the darkness he called Night.  And the evening and the morning were the first day.”  The atmosphere was now clear.  God divided it.  Wiped away the atmospheric smog, ash, soot, burning sulfur—whatever it was--that blotted out the sun.

And then…

In order to have night and day, you have to have rotation.  Was rotation there before, or was this “without form” mass we call earth just wobbling around in space?  When you have an impact with an asteroid like the one that hit the Gulf of Mexico it will surely have some sort of effect on the earth’s balance and rotation.

Whatever it was doing, God called it the first day--rotation.  The Bible says there was an evening and a morning: “…the evening and the morning were the first day.”  The sun came up; the sun went down. How long was a day?  I don’t know.  Every time there is a volcanic eruption, a tsunami, asteroid impact, or a major earthquake on earth, the rotational speed of the earth is affected. All we know from the Biblical account is that there was one rotation of the earth and God called it a day.