news-nerds-callback.php

<?php
/**
 * Test Callback on Publish
 *
 * @package News-Nerds
 */

add_action( 'publish_post', 'callback_function_to_run_on_publish', 999 );

/**
 * Callback method to kick of a cron event
 *
 * @param int $post_id Post ID.
 * @return void
 */
function callback_function_to_run_on_publish( $post_id ) {
	if ( defined( 'WP_IMPORTING' ) && WP_IMPORTING ) {
		return;
	}
	wp_schedule_single_event( time(), 'actual_function_that_i_want_call', array( $post_id ) );
}