static function __static()
{
self::$YEAR = new self(0, 'year');
self::$MONTH = new self(1, 'month');
self::$DAY = new self(2, 'day');
self::$HOURS = new self(3, 'hours');
self::$MINUTES = new self(4, 'minutes');
self::$SECONDS = new self(5, 'seconds');
}
