Time string format

time.js

// @Param integer - Takes an integer as input
// integer from parameter n, where n represents number of seconds
// Returns a string in the format HH:MM:SS
// @Return string

// from this SO post https://stackoverflow.com/a/25279399/7384523

function createTimeString(n){
  var date = new Date(null);
  date.setSeconds(n); // specify value for SECONDS here
  var timeString = date.toISOString().substr(11, 8);
  return timeString;
}