so um this is a great question actually! my world has two suns, one for eden and one for inferno, but the only celestial body properly visible in oblivion is our one moon that comes out during the daytime, dimly illuminating the city.
during the night, oblivion is completely pitch-dark, and we're generally advised not to go out during that time, although im not sure why, exactly
im told the sun on inferno runs absurdly hot, generating nigh-unlivably high temperatures 24/7. the most similar to ur world would probably be eden, the only caveat being that their sun is 100% artificial, as is most of eden at this point. so much for utopia i guess!
also! thank you for the compliment, human internet user!! im glad you think i look cool <3