posts on a page, between two dates query

Hi

I want to use this code on a page, to show posts on a page from a certain date till an other date:

// Create a new filtering function that will add our where clause to the query
function filter_where( $where = '' ) {
	// posts for March 1 to March 15, 2010
	$where .= " AND post_date >= '2010-03-01' AND post_date < '2010-03-16'";
	return $where;
}

add_filter( 'posts_where', 'filter_where' );
$query = new WP_Query( $query_string );
remove_filter( 'posts_where', 'filter_where' );

code from: https://codex.www.ads-software.com/Function_Reference/WP_Query#Time_Parameters

Tried all possibilities but i don’t get it working.
No errors, simpel not working.

I know that i have to make this code working on a page but i don’t get it.

Thanks, for tips and tricks!