Thanks to both of you. It seems to me the game world is a bizarre mix of spherical geometry applied to a flat world. It's a challenge making head and tail of the observations. I remember getting headaches years ago when I last played SH3 trying to figure out the timetable. I feel that headache is returning
Basically, what I have been assuming so far is that, in the game, at a given latitude, the sunrise/sunset would happen at the same hour local time every 15 degrees longitude. I'm more than ready to challenge that assumption but I will carry on testing, getting the sunset hour at N 50* and N 60* at W 0* and W 15* (which would be centre of that time zone I assume).
The light switch before actual sunset is precicely the sort of info I needed. Now I know the switch master can't be trusted and I will watch the sun myself, if possible. I could need an Always Clear Skies mod for that
