Genesis 1-3

Reading for Wednesday January 1, 2020
Genesis: 1-3
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When did the creation occur?
Was each day 24 hours, or was each "day" an epoch?
How old were Adam and Eve at the time of the fall?
The line "Thus the heavens and the earth were finished, and all the host of them." in Genesis 2:1 comes before the story of Adam.  Is it possible that Adam was created much later, and we have just assumed that he was made on day 6?