run cron at last day of the month using node cron

Question

I am using node cron to run the cron every last day of the month

var job = new CronJob('01 01 12 * * *', function() {
    //my function to do job
 }, function () {

 }, true);

so what time I should set so that the script run every last day of the month

Answer 1

The simplest method actually to run the cron at 00:01 the next day of the month, and to use 0 0 1 * * But if you insist on running it on the last day you will need to check in your script.

Use the following js snippet;

const today = new Date();
const tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 1);

if (today.getMonth() !== tomorrow.getMonth()) {
  // run your cron job
}

so you can program your cron to run daily but the if will guard to execute it only when it is the last day of the month.