"I ask because that part of the Creation story is not to be taken literally"
Why do you think that is not to be taken literally?
Because there is a whole lot more to the Creation story, Genesis 1-3, than the literal text.
Chapter 1 is the six states of man's regeneration and the rise of the Church of Adam. Chapter 2 describes the Church of Adam and the nature of Celestial people that comprised it. Chapter 3 describes further generations of that Church and it's eventual fall before the flood.
If you want to quibble that it's more important that a day is a day and ignore the meaning of the story, that's okay. That part of the Word (up to Genesis 11) was written in a quasi-historical style... like a myth.