public function getAgeFull(int $jd): string
    {
        if ($this->year === 0 || $jd === 0) {
            return '';
        }
        if ($this->minimum_julian_day < $jd && $this->maximum_julian_day > $jd) {
            return '';
        }
        if ($this->minimum_julian_day === $jd) {
            return '';
        }
        if ($jd < $this->minimum_julian_day) {
            return view('icons/warning');
        }
        [$y, $m, $d] = $this->calendar->jdToYmd($jd);
        $dy = $y - $this->year;
        $dm = $m - max($this->month, 1);
        $dd = $d - max($this->day, 1);
        if ($dd < 0) {
            $dm--;
        }
        if ($dm < 0) {
            $dm += $this->calendar->monthsInYear();
            $dy--;
        }
        // Age in years?
        if ($dy > 1) {
            return $dy . 'y';
        }
        $dm += $dy * $this->calendar->monthsInYear();
        // Age in months?
        if ($dm > 1) {
            return $dm . 'm';
        }

        // Age in days?
        return ($jd - $this->minimum_julian_day) . 'd';
    }