zz

// Custom Cron Recurrences
function themename_cron_fire_after_time_recurrence( $schedules ) {
	$schedules['Weekly'] = array(
		'display' => __( 'Once A Week', 'textdomain' ),
		'interval' => 604800,
	);
	return $schedules;
}
add_filter( 'cron_schedules', 'themename_cron_fire_after_time_recurrence' );

// Schedule Cron Job Event
function themename_cron_fire_after_time() {
	if ( ! wp_next_scheduled( '' ) ) {
		wp_schedule_event( current_time( 'timestamp' ), 'Weekly', '' );
	}
}
add_action( 'wp', 'themename_cron_fire_after_time' );