Jours fériés France

    public function nextWorkingDay(Carbon $date)
    {
        $holidays = [];
        $holidays[] = Carbon::create($date->format('Y'), 1, 1);
        $holidays[] = Carbon::create($date->format('Y'), 5, 1);
        $holidays[] = Carbon::create($date->format('Y'), 5, 8);
        $holidays[] = Carbon::create($date->format('Y'), 7, 14);
        $holidays[] = Carbon::create($date->format('Y'), 8, 15);
        $holidays[] = Carbon::create($date->format('Y'), 11, 1);
        $holidays[] = Carbon::create($date->format('Y'), 11, 11);
        $holidays[] = Carbon::create($date->format('Y'), 12, 25);
        $holidays[] = Carbon::create($date->format('Y'), 3, 21)->addDays(easter_days($date->format('Y')));
        $holidays[] = Carbon::create($date->format('Y'), 3, 21)->addDays(easter_days($date->format('Y')) + 39);
        $holidays[] = Carbon::create($date->format('Y'), 3, 21)->addDays(easter_days($date->format('Y')) + 50);

        $isWorkingDay = false;

        while (! $isWorkingDay) {
            if (! in_array($date, $holidays)
                && $date->format('D') != 'Sat'
                && $date->format('D') != 'Sun') {
                $isWorkingDay = true;
            } else {
                if ($date->format('D') == 'Sat') {
                    $date->addDays(2);
                } else {
                    $date->addDays(1);
                }
            }
        }

        return $date;
    }