WordPress at a glance
action is not described

parse_site_query action-hook . WP 4.6.0

Fires after the site query vars have been parsed.

Usage

add_action( 'parse_site_query', 'action_function_name_7095' );
function action_function_name_7095( $this ){
	// action...
}
$this(WP_Site_Query)
The WP_Site_Query instance (passed by reference).

Where the hook is called

WP_Site_Query::parse_query()
parse_site_query
wp-includes/class-wp-site-query.php 205
do_action_ref_array( 'parse_site_query', array( &$this ) );

Where the hook is used (in WP core)

Does not used.