public function is_cron_overdue( $cron, $timestamp ) {
		$overdue = ( ( time() - $timestamp ) / HOUR_IN_SECONDS ) > 24;
		if ( $overdue ) {
			$error_msg = esc_html__( 'There may be a problem with WP-Cron. A GitHub Updater WP-Cron event is overdue.', 'github-updater' );
			$error     = new \WP_Error( 'github_updater_cron_error', $error_msg );
			Singleton::get_instance( 'Messages', $this )->create_error_message( $error );
		}
	}