code: function icaltime_compare(other) {
        var a = this.toSeconds();
        var b = other.toSeconds();
        return (a > b) - (b > a);
      }
docs: Compare this utc offset with another one.
  
  @param {ICAL.UtcOffset} other        The other offset to compare with
  @return {Number}                     -1, 0 or 1 for less/equal/greater