Hi, Is there a tweak like f.lux that allows you to set the times rather than going by sunrise and sunset? Or maybe a way to manually tweak f.lux setting via iFile or something? I work in a freakishly brightly lit hospital until 11pm and don't want to reduce the white point until I'm off work. I'm currently doing it manually, but it's kind of tedious. (iOS 9.3 is not an option for me) Thanks!