I edited your quote to fix the equation.
I wonder if anyone were to keep track, if eggs that are laid a little early tend to hatch a little late based on their lay date, but on time based on the ovulation date. And vice versa of course. It would make sense based on what you have said here.
Thanks for an interesting post. I'm not sure it ever would have occurred to me to add up the days and realize it comes to the same total as boas.