F.lux is linked to sunrise/sunset or to time-zone?
Times zones are man-made, somewhat arbitrarily (if I go due south 50 kms from here, at this time of year, I'm teleported 60 minutes into the future) but are vaguely linked to what time the sun rises/sets. When I set my location in f.lux does it change my screen colours in accordance to the time zone of that city, or the actual time nature is running in at that longitude?
I apologise if this is explained elsewhere. I checked and couldn't find an answer.