Cron runs twice at the set time

I want to run it every 5 minute from 8-22. It runs two times every 5 minutes.

I am using node-schedule version 1.0.0 with node version 5.0.0.

  var schedule = require('node-schedule');
  var postman = schedule.scheduleJob('0 */5 8-22 * * *', postmanFunction);

Any help would be appreciated.

[NgocSon159]

I was able to solve it, the problem was due to the multiple clusters node was running on. As in my case node was running on two clusters so it executed the job twice.

var cluster = require('cluster');
if(cluster.worker.id == 1){
 // run job
}

Thanks you so muchhhhh.

[arsinawaz]

I was able to solve it, the problem was due to the multiple clusters node was running on. As in my case node was running on two clusters so it executed the job twice.

var cluster = require('cluster');
if(cluster.worker.id == 1){
 // run job
}