WordPress at a glance
filter is not described

the_weekday filter-hook . WP 0.71

Filters the weekday on which the post was written, for display.

Usage

add_filter( 'the_weekday', 'filter_function_name_2817' );
function filter_function_name_2817( $the_weekday ){
	// filter...

	return $the_weekday;
}
$the_weekday(string)
-

Where the hook is called

the_weekday()
wp-includes/general-template.php 2560
echo apply_filters( 'the_weekday', $the_weekday );

Where the hook is used (in WP core)

Does not used.