function myFunction() {
// The code below logs the HTML code of the Google home page.
// Data from Sunrise-Sunset.org
var response = UrlFetchApp.fetch("http://api.sunrise-sunset.org/json?lat=XX.XX2001&lng=XX.XX128998&date=today");
Logger.log(response.getContentText());
var str = response.getContentText();
//var SunriseStr = (str.substring(23, 30));
//var SunsetStr = (str.substring(45, 52));
//Logger.log(SunriseStr);
//Logger.log(SunsetStr);

var SunriseHrInt = (Number(str.substring(23, 24))-2);   // Extract the Sunrise hour, converts it to an integer and roughly convert Zulu to Local time for Sunrise, the factor allows for residule light   
var SunriseMinInt = (Number(str.substring(25, 27)))/60; // Extract the Sunrise Minutes and converts to decimal minutes   
//Logger.log(SunriseHrInt);
//Logger.log(SunriseMinInt);
Sunrise = SunriseHrInt + SunriseMinInt;
Sunrise = Math.round(Sunrise*100.0)/100.0;   //Sets decimal time to two decimal place
Logger.log(Sunrise);

var SunsetHrInt = (Number(str.substring(45, 46))+13);  // Extract the Sunser hour, converts it to an integer and roughly convert Zulu to Local time for Sunrise, the factor allows for residule light
var SunsetMinInt = (Number(str.substring(47, 49)))/60; // Extract the Sunrise Minutes and converts to decimal minutes
//Logger.log(SunsetHrInt);
//Logger.log(SunsetMinInt);
Sunset = SunsetHrInt + SunsetMinInt;
Sunset = Math.round(Sunset*100.0)/100.0;  //Sets decimal time to two decimal place
Logger.log(Sunset);

var str = new Date() + "";
//Logger.log(str);
//var Day = (str.substring(0, 11));
//Logger.log(Day);
var TimeNowHr = (Number(str.substring(16, 18)));      //Extrants "Now" hour and converts to a number
var TimeNowMin = (Number(str.substring(19, 21)))/60;  //Extrants "Now" minutes, converts to a number and decimal minutes
TimeNow = TimeNowHr + TimeNowMin;
TimeNow = Math.round(TimeNow*100.0)/100.0; //Sets decimal time to two decimal place
Logger.log(TimeNow);

if ((TimeNow >= Sunset) || (TimeNow <= Sunrise)) 
  {
    var resultZipatoSunrise = UrlFetchApp.fetch("https://my.zipato.com/zipato-web/remoting/attribute/set?serial=xxxxxxxxxxxx&apiKey=xxxxxxxxxxxxxxxx&uuid=xxxxxxxxxxxxxxxxxxxxxxxxxx&value=1");
    Logger.log("Set to 1 (ON)");
  } 
  else 
  {
  var resultZipatoSunrise = UrlFetchApp.fetch("https://my.zipato.com/zipato-web/remoting/attribute/set?serial=xxxxxxxxxxxxxxxxxxx&apiKey=xxxxxxxxxxxxxxxxxxxx&uuid=xxxxxxxxxxxxxxxxxxxxxxxxxxx&value=0");
   Logger.log("Set to 0 (OFF"); 
  }
Logger.log(resultZipatoSunrise);
}