As someone who forcibly steered himself away from the temptation of a toy OS side-project due to the enormous time investment in drivers, syscall handlers, and so on that it would have taken to get working, I can't possibly thank you (or curse you) enough for calling rump kernels to my attention. So instead I offer a minor nitpick:

> If you do the math (and bc did), there are 86400 seconds in a week.

you might want to check bc's math ;)