"It's 1:00 a.m. or 1:00 p.m. and you have all of the stars in the sky ... "gradually darker" until mid-November when it becomes "pitch black 24-7" and you "see no difference in day or night ...

Roman will repeatedly look at wide, deep regions of the sky in near-infrared ... That includes stars being shredded as they pass too close to a black hole, intense emissions from galaxy centers ...