It would be good to see what is local time difference between selected center and other map points:
add inner circles with time gradations -5; -4; -3; -2; -1; 0; +1; +2; +3; +4; +5
Time line is always GMT or CET, no matter where you point and therefore the sunrise in Turkey cannot be at 03:00 so you have to either re-calc local time as the scale or instead as listed here originally list under the time scale local time scale which is more important. That is the only flaw with this so far, otherwise a really great application.