Nice app, good work OP! I currently use http://suncalc.net http://suncalc.net for stuff like this, something I really value that Chronozone doesn't seem to have

Nice app, good work OP! I currently use http://suncalc.net http://suncalc.net for stuff like this, something I really value that Chronozone doesn't seem to have yet is the ability to select different times of the year, as well as seeing the movement of the sun during the day.