Relating to This question, how can I ask contributors to include "facts and citations" in a question about a completely fictional world?
It's science fiction, so all facts are relative to the universe, and there is no established media to cite?
The first point is quite the most important : Because you ask about everything, anyone will choose what they want to talk about, because no one wants or have the time to write a whole enclickopedia about it (this kind of site is bad for this, anyway). Since they choose, they might very well stray from what you want to really know.
Then... You'll notice that out of the 6 points, 5 starts with "you don't tell". Thing is, if you don't tell, we have to make up things in your stead. The more we make up things, the more we'll present a personal point-of-view on the topic rather than working with your own.
Finally, as pointed out in the comments and some of the answers, it seems you have some holes within the world as you presented it. My tech example widening wake-up times is one as much as AlexP's one about rainy days lacking UVs, but I can also raise the fact that lack of communication (what happens in your world) is a big thingy to tackle on when you don't want "active discrimination, segregation or racism allegory". This can raise a frame-challenge to "dodge" the question partially. Or... Entirely like John O. did because they didn't see how it could ever make sense1. While you don't need much effort to remove discrimination, you have to be careful to not dig too much to the point of removing what makes a society cohesive.
If you sum up the above it leads to a more opinion-based question. So to have fact based answers, solve these issues, starting with broadeness (the tackiest and stickiest one), then more data, then seal the biggest holes (or don't put them in a way they're seen).
P.S. : On a smaller note, it's better when you set a name onto important things. In this case, defining how each species are called allows the other users to keep the same terms, instead of creating dodadiladoos like Nochnoy Dozor... Or daymen/nightmen :p. In overall it improves consistency.
1 : Not that I support putting this frame-challenge as the only part of an answer. It would have been better as a comment.
That is all.
The tag "hard science" should be used when you're looking for "facts and citations". Answers should include scientific data, article citations, equations, and the like in order to support the conclusion of the response.
That said, it doesn't matter that your world is fictional. We can apply real world science to an entirely fictional setting. You gave some good background on the two species in question and a rough idea of technological level.
I'd argue that what your question is missing is why you would want to apply 21st century Californian norms to this question. (Using 21st Century Western Anglophone society as a baseline / comparative level of technology to 21st century California)
Granted that California is about an alien a world as one can find in this sector of the galaxy, to me it just doesn't really make sense to ask about the cultures & infrastructures of two actually alien species living on an actually alien world all in terms of human culture.
Hard Science is the answer to your Meta query, but I'm afraid it's not the answer to your problem over on Main.
And the reason is simple: as you hint, there simply are no sciencey facts to quote, other than the ones you provide in your query. Also, any sociological or cultural facts we could provide will all be Earth-centered and thus not helpful.
Edit your question to include a section titled "Expectations" or "Response Criteria". Lay out specifically what you will consider the most important answer criteria to be.
And as Tortelina says in the comment, perhaps don't worry so much about "facts and citations"! Use the tag Science Based, which will clue respondents in to giving you a relatively sciency answer.