Recommend a CronMaker for Node-Cron

[Marc]

I've always used http://www.cronmaker.com/ to generate Cron Expressions but they are incompatible with node-cron.

For example: 0 0 12 13 9 ? * causes node-cron to say "? is a invalid expression for week day".

Can anyone recommend a tool which allows generation of cron expressions?

Is there any reason node-cron doesn't support the above expression?

[Edede Oiwoh]

I've used https://crontab.guru for some time without issues