protected function setDateAttribute($attribute, $value)
	{
		switch ($attribute)
		{
			case 'Day':
				return $this->setDate($this->getYear(), $this->getMonth(), $value);
				break;
			case 'Month':
				return $this->setDate($this->getYear(), $value, $this->getDay());
				break;
			case 'Year':
				return $this->setDate($value, $this->getMonth(), $this->getDay());
				break;
			case 'Hour':
				return $this->setTime($value, $this->getMinute(), $this->getSecond());
				break;
			case 'Minute':
				return $this->setTime($this->getHour(), $value, $this->getSecond());
				break;
			case 'Second':
				return $this->setTime($this->getHour(), $this->getMinute(), $value);
				break;
		}

		throw new InvalidArgumentException('The date attribute ['.$attribute.'] could not be set.');
	}