code: function icaltime_compare(other) {
        var a = this.toUnixTime();
        var b = other.toUnixTime();
  
        if (a > b) return 1;
        if (b > a) return -1;
        return 0;
      }
docs: Compares the ICAL.Time instance with another one.
  
  @param {ICAL.Duration} aOther        The instance to compare with
  @return {Number}                     -1, 0 or 1 for less/equal/greater