Quote Originally Posted by N/A View Post
The six time periods cited in the scriptures as "day"
Were not the 24 hour days we have now. Those periods could have been a year long, or ten million years long. Time is nothing to God, but "day" was the only way the translators of the Bible knew how to label those periods. Consider, that time means nothing to God, for all we know he might still be in the "7th day" of rest.
You are right that God is outside of time and to Him a day not the same as a day is to us (Ps. 90:4, 2 Peter 3:8), but one of the first things God did in the creation story was give us a reference.

Genesis 1:3-6, And God said "Let there be light," and there was light. God saw that the light was good, and he separated the light from the darkness. God called the light "day," and the darkness he called "night." And there was evening and there was morning, the first day.

While there are many important parts of these verses, for time determination the last sentence is operative. The evening and the morning, a 24 hour period, was determined to be the first day. Most people say that all God created on the first day was light, but that is not true. The other thing that God created on the first day was time.