node-cron: Do not start work immediately

Why do not start working without delay time (start).

var job1 = new CronJob({
    cronTime: '* 5 * * * *',
    onTick: function () {
        console.log(1);
    },
    start: true
});
job1.start();


var job2 = new CronJob('* 5 * * * *', function(){
        console.log(1);
    },
    true
);

It does not work.

How to run cron immediately after running the script?