protected function _daySelect($options, $context)
    {
        $options += [
            'name' => '',
            'val' => null,
            'leadingZeroKey' => true,
            'leadingZeroValue' => false,
            'templateVars' => [],
        ];
        $options['options'] = $this->_generateNumbers(1, 31, $options);

        unset($options['names'], $options['leadingZeroKey'], $options['leadingZeroValue']);

        return $this->_select->render($options, $context);
    }