Though it does briefly mention it at the end, one detail I'm uncertain about with this and where they mention intermittent fasting is how much the times of days matter? Some basic posts I've read about IF essentially say that they simply don't eat until 12pm and stop at 6-8pm. But this article seems to suggest that it would be much better if they ate at 8am and stopped at 3-5pm instead?

If that's the case, that leads me to wonder if your body wants you to adjust throughout the year. Like when the sun comes up earlier, should the feast change from 6am to 1-3pm instead? Or does that adjustment not really matter?