woocommerce_date_format │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_date_format', 'wp_kama_woocommerce_date_format_filter' );

/**
 * Function for `woocommerce_date_format` filter-hook.
 * 
 * @param  $date_format 
 *
 * @return 
 */
function wp_kama_woocommerce_date_format_filter( $date_format ){

	// filter...
	return $date_format;
}

$date_format

-

Where the hook is called

return apply_filters( 'woocommerce_date_format', $date_format );

Where the hook is used in WooCommerce