WordPress at a glance
filter is not described

get_the_date filter-hook . WP 3.0.0

Filters the date a post was published.

Usage

add_filter( 'get_the_date', 'filter_function_name_4291', 10, 3 );
function filter_function_name_4291( $the_date, $d, $post ){
	// filter...

	return $the_date;
}
$the_date(string)
The formatted date.
$d(string)
PHP date format. option if not specified.
Default: 'date_format'
$post(int/WP_Post)
The post object or ID.

Where the hook is called

get_the_date()
get_the_date
wp-includes/general-template.php 2276
return apply_filters( 'get_the_date', $the_date, $d, $post );

Where the hook is used (in WP core)

Does not used.