Cake\Chronos\Traits\ModifierTrait::startOfCentury PHP Метод

    public function startOfCentury()
    {
        $year = $this->startOfYear()->year($this->year - 1 - ($this->year - 1) % ChronosInterface::YEARS_PER_CENTURY + 1)->year;
        return $this->modify("first day of january {$year}, midnight");
    }