for night and light mode the sun down and son up goes off of your location but when I turn off my location data it goes back to the default of 10 p.m. to 6 a.m. I was thinking that there should be an option for automatic updating or manual set of the time just because I know a lot of people are having that issue I even read up online to see how to fix it apparently I needed my location on and I didn't know that so there should be an option for manual time select but also an option for automatic so you can keep the location feature.