In reply to Whitney Watts.

"And God said, 'Let there be light, ' and there was light.... And there was evening and there was morning, the first day... and there was evening and there was morning, the second day." In other words, a 24 hour day. The Hebrew word used for day, yom, means a literal 24-hour period in this case because it is qualified with the words evening, morning, first, second, etc. Also, everywhere else in the Scriptures where this is the case "yom/day" is always interpreted as a literal 24-hour period by everyone. Only Genesis 1 seems to be problematic to do so for some.
God can easily be the source of light for the day and evening until the fourth day when He created the sun, moon, stars, etc. Revelation 21:23 states concerning the new heavens and new earth, "And the city has no need of sun or moon to shine on it, for the glory of God gives it light, and its lamp is the Lamb." Could not God have been the source of light during the first 3 days of creation since He will be the light at the end of the age?
Furthermore, the proper hermeneutic for interpreting the text of Genesis is that of historical narrative, including chapters 1-11. It is not poetry, apocalyptic, or any other type of literature. This also means the word "day" must be a 24-hour period.
The verse you quoted from 2 Peter 3:8 you have taken out of context. It is talking about the second coming of Christ, not the creation days. Furthermore, the text says one day is as a thousand years, not is a thousand years. That is an important distinction. The word "as" used by Peter clarifies what he is trying to say and is also cleared up by Peter in the very next verse, verse 9 - "The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance."
Furthermore, Jesus stated, "Have you not read that he who created them from the beginning made them male and female?" Jesus, who was in the beginning with God, made all things. Jesus is the eyewitness to the Creation event since he is the Creator. So was Jesus wrong when he stated that Adam and Eve were created in the beginning, not millions of years later after the beginning? For my money, Jesus' eyewitness testimony about the creation is more powerful than any other type of argument that can be juxtaposed.