Why would anyone forget?
Being a fisherman, it's really important to know these things, unless you just want to sit outside.
Hey, I’m not arguing it - I think it’s a basic piece of “general information” that, like you said, can help you with things but people were fishing and hunting long, long before they had a clue about orbits of stars and planets.
People forget all sorts of things, surely you can understand that. Do you remember the Pythagorean theorem? If you need it for your job, maybe. Most people have no idea.
As for sun and seasons, people can grasp the East to West rise and set and seasons without knowing the “fact” that Earth orbits our satellite, the Sun. In fact, most people don’t know the Sun is a star. I never knew it before - or if learned it, forgot. See?