"In six days"<quoted text>
This is what the buy-bull says. Anybody can look it up.
Genesis 1:5: "And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day."
And there we have night and day. It's clearly not just a "period of time" as some funides will excuse. It mentions light and darkness as day and night.
God doesn't make the sun until Genesis 1:16:
"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."
Exodus 20:11 (NASB)
11 "For IN SIX DAYS the LORD made the heavens and the earth, the sea and all that is in them, and rested on the seventh day; therefore the LORD blessed the sabbath day and made it holy.