express node-schedule

var schedule = require("node-schedule");


var j = schedule.scheduleJob('49 * * * *',function(){
    console.log("every hour 's 49 minutes.")
});
var j1 = schedule.scheduleJob(new Date(2018,10,27,15,52,0),function(){
    console.log("2018/10/27 15:52:00 running")
});
var rule =new schedule.RecurrenceRule();
rule.minute = 2;
var j2 = schedule.scheduleJob(rule,function(){
    console.log("every minute 's 2 running again!")
})
var j3 = schedule.scheduleJob({hour:16,minute:12,dayOfWeek:2},function(){
    console.log("every thuesday 16:12:00 running !");
});
// j3.cancel();  invalidate j3 job.

Reference:
https://www.npmjs.com/package/node-schedule