node cron every 5 minute + 15 second run function or value change

node cron every 5 minute + 15 second run function

function run(additional_second = 10){
   setTimeout(() => {
      console.log("Ok");
   }, (additional_second * 1000));
}
cron.schedule('0 */5 * * * *', () => {
   run(15);
});