<< 7 days is OUR reference point.
Is that an absolute time frame? >>
No, The first "days" of genesis are not an absolute time frame.
The earliest thinkers of the Christian church often felt the same way, even though they had no "scientific pressure' to contend with. Consider this reference from Augustine's City of God, Book 11, chapters 6:
<< [Prior to the beginning] no time could then be past, because there was no creature by whose movements its duration could be measured. . . .The fact is that the world was made simultaneously with time, if, with creation, motion and change began. . . .As for these 'days,' it is difficult, perhaps impossible to think--let alone explain in words--what they mean >>
This was written around 420 A.D. So much for the modern myth that the Church has always taught that the days of Genesis were literal twenty-four hour days.
Until a creature exists who is born in time and has the ability to measure ansd observe time, all literary forms which speak of preceding existence must be recognized as metaphor, not science. That doesn't mean such metaphor isn't true. . .
Truth masters metaphor and communicates the incommunicable.