javascript function creating an array of times every N minute intervals

gistfile1.txt

var everyNminutes = function (n){
    var result = [];    
    for(var hours = 0; hours < 24; hours++){
        for(var minutes = 0; minutes < 60; minutes = minutes+n){
              var h = '';
              var m = '';
              if(hours<10){
                 h = '0' + hours;
              }else{
                  h = hours;
              }
              if(minutes<10){
                 m = '0' + minutes;
              }else{
                  m = minutes;
              }
            result.push(h + ':' + m);
        }
    }
    return result;
};

console.log(everyNminutes(15));