I would like to schedule Jenkins job for example every hour between 9 am to 9 pm.
* 1/12 * * *
is not working.
I would like to schedule Jenkins job for example every hour between 9 am to 9 pm.
* 1/12 * * *
is not working.
Jenkins uses Cron expressions for scheduling. You can see details in answer to linked question in the comments.
Answer to your question would be H 9-21 * * *
TO make it run every 12 hours once, H */12 * * *