Do you mean to tell me that pilots would not know to navigate by the stars?
Yes. It's not a commonly needed skill.
Nor would they be able to use the sun by day?
I am left without voice. It may not be a "commonly needed skill" but it's darn useful and I would have more confidence in flying if I knew that failing all equipment the pilots would know where they are and where they go... I was taught as a child, it's not that difficult, no need to be an astronomer...
It's a skill that could have come in handy to the pilots of MH370 on this moonless night without clouds.