code: function fromUnixTime(seconds) {
        this.zone = ICAL.Timezone.utcTimezone;
        var epoch = ICAL.Time.epochTime.clone();
        epoch.adjust(0, 0, 0, seconds);
  
        this.year = epoch.year;
        this.month = epoch.month;
        this.day = epoch.day;
        this.hour = epoch.hour;
        this.minute = epoch.minute;
        this.second = Math.floor(epoch.second);
  
        this._cachedUnixTime = null;
      }
docs: Sets up the current instance from unix time, the number of seconds since
  January 1st, 1970.
  
  @param {Number} seconds      The seconds to set up with