Change reccuring events at specfic date shortcode

If someone has to chane a whole bunch of recurring events every year at a specific date. Here I can provide you an exampel shortcode how I did it. I changed it late to an do-action hook but to test it it would be easier this way 🙂

function update_event_data_shortcode($atts) {
    $current_date = date('d.m.Y');
	$current_year = date('Y');
	$next_year = date('Y', strtotime('+1 year'));
	
    if (isset($atts['event_id'])) {
		
        $event_id = intval($atts['event_id']);
		$EM_Event = em_get_event($event_id, 'event_id');
		
		$new_start_date = $next_year.'-04-01';
		$EM_Event->start_date = $new_start_date;

		$new_end_date = $next_year.'-10-31';
		$EM_Event->end_date = $new_end_date;
		
		if (strtotime($current_date) == strtotime('01.11.' . $current_year)) {
			$EM_Event->recurring_reschedule = true;
			$EM_Event->save(); 
		}	
    } 
}
add_shortcode('update_event_data', 'update_event_data_shortcode');