I can't see the days = epochs idea either. There are too many facts against it. At least two theories, consistent with present physics, exist that would allow a literal seven days, if outside intervention is not ruled out.
Name one. I seriously do wish to know how you can get from the Big Bang to a universe inhabitable by humans in a mere seven days without completely violating several laws of physics.
One) The assumption is commonly made that the universe is infinitely large. If this assumption is wrong, Einstein's theories result in a situation where in an expanding universe, gravitational effects cause time near the center to be much slower than the outer edges during the early stages of expansion. Calculation shows that in such case, anything within 5% of the center would have extremely large ratios compared to the outside, the exact amount depending on the size of the universe. So far no one has figured out any way to test this, but it does not violate any currently accepted laws of physics.
BTW, no current laws of physics have been able to explain any beginning for the universe, infinite or not. The currently accepted laws do require a beginning. Ref: the three laws of thermodymnamics, simplified to: 1) You can't win, 2) you can't even break even, 3) you can't get out of the game. I can't be an atheist because I can't believe in miracles without a cause.
Also, the suggestion was made about possible Duckking of the thread. Perhaps we should discuss the Islamic viewpoint instead. FWIR, this is that Allah's will is arbitrary and responsible for all things. If someone is a sadist, it is Allah's will. If someone is a a good person, it is Allah's will. Because Allah is arbitrary, there is no requirement for him to put the good person in paradise or punish the bad person. The only way to be sure of paradise is to die in jihad. But Allah is not required to do even this.
This contrasts with the Biblical view of a real universe, created and sustained by God, but otherwise independent except when there is a miracle or judgement. At the extreme, the Islamic view would seem to be that everything that occurs is a miracle. The situation in the Safehold series between OWL and Nahrman-in-the-machine reminds me of this semi-independence, except for the obvious point that OWL is part of the machine and Nahrman came from outside it. Note that miracles seem to obey laws after the changed situation - it would have needed a miracle for a never-failing barrel of meal and cruse of oil, but not for the digestion, etc. I Kings 17