function getworldtime(h) {
 var Datum = new (Date);
 var std = Datum.getHours();
 var min = Datum.getMinutes();
 std = std+h;

 if(min < 10) min = "0"+min ;

 if(std > 23) std = std-24;

 if(std < 10) std = "0"+std;

 return (std+":"+min);
}