SolarZenith functions correctly. I have tried two different loops and neither produce the right answer.
I have tried placing the “return Sunrise1” right after “Sunrise1 = hrr + “.” + mnr;” and it produces “undefined” in the textbox.
How do I get a loop to be able to save an variable till the loop is concluded?
function SunRise(mo, dy, yr, hr, mn, timezone, dst, lon, lat){
var Twi = 90.8333333333333;var t = 0;
do{
hr = Math.floor(t / 60);
mn = t - 60 * hr;
solarzen = SolarZenith(mo, dy, yr, hr, mn, timezone, dst, lon, lat);
if (solarzen < Twi){// Twilight
//Light
if (a1 = 0){
var a1 = 1;
var hrr = hr;
if (mn < 10){mn = "0" + mn}
var mnr = mn;
SunRise1 = hrr + ":" + mnr;
}//end if
}//end if
t++;
}while (a1 = 0);
return SunRise1;
}//End Function