2 Peter 3:8 But do not let this one fact escape your notice, beloved, that with the Lord one day is like a thousand years, and a thousand years like one day.
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Lesson: Don’t get locked into the notion that the universe was created in six 24 hour periods as defined by man.
Attempting to correctly answer the question from Genesis 1 does not seem possible when the clue is found in Genesis chapter 2, and in your 2 Peter 3:8.
In Genesis chapter 2 verse 17, God tells Adam, the results of partaking of the tree of knowledge of good and evil. “for in the day thou eatest thereof thou shalt surly die”.
Adam lived just short of a thousand earth years. Your scriptural knowledge was a key to decipher the apparent mystery.