Contradiction with Genesis 1:3
Genesis 1:3 describes God creating light on the first day before creating the sun, moon, and stars, which were set in the sky on the fourth day per Genesis 1:17, leading to questions about the source of light prior.
Genesis 1:3: And God said, Let there be light: and there was light.
Contradiction with Genesis 1:14-16
These verses mention God making two great lights and the stars before mentioning their placement in Genesis 1:17, which some interpret as a sequence contradiction regarding creation and placement times.
Genesis 1:14-16: And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years: [the day...: Heb. between the day and between the night]
Contradiction with Genesis 1:19
The description of the end of the fourth day might be seen as contradicting the continuous nature of light provision suggested in Genesis 1:17, depending on interpretations of "day."
Genesis 1:19: And the evening and the morning were the fourth day. [And the evening...: Heb. And the evening was, and the morning was etc.]