Cron Job Every Day at 11:00 PM – Expression & Examples
The cron expression `0 23 * * *` triggers a job once daily at exactly 23:00 (11:00 PM) server time, every day of the week and every month of the year. The `0` in the minutes field ensures the job fires on the hour with no offset. This late-night schedule is ideal for tasks that should run after business hours when user traffic and system load are at their lowest.
How It Works
The cron expression `0 23 * * *` triggers a job once daily at exactly 23:00 (11:00 PM) server time, every day of the week and every month of the year. The `0` in the minutes field ensures the job fires on the hour with no offset. This late-night schedule is ideal for tasks that should run after business hours when user traffic and system load are at their lowest.
Common Use Cases
- Run nightly database backups after business hours to minimize performance impact on production systems.
- Generate and email daily summary reports — such as sales totals or error logs — so they are ready first thing in the morning.
- Trigger end-of-day data synchronization between systems, such as pushing the day's orders from an e-commerce platform to an ERP or accounting tool.
- Perform nightly cache invalidation or index rebuilds on a content platform to ensure fresh data is served when traffic picks up the next morning.
Monitor a Job on This Schedule
Writing the 0 23 * * * schedule is only half the job. Cron fires silently — if the run is skipped, the server is down, or the script fails, nothing tells you. A heartbeat monitor closes that gap: your job pings a URL on success, and you get an alert the moment an expected run goes missing. CronJobPro can run this schedule for you as an HTTP job, or watch a job you run elsewhere (cron, CI, Kubernetes) with a dead-man's-switch check.
Schedule This Cron Job Now
Create a free CronJobPro account and use 0 23 * * * to schedule HTTP requests automatically — with monitoring, retries, and notifications built in.
Frequently Asked Questions
What does 0 23 * * * mean in cron?
The cron expression `0 23 * * *` triggers a job once daily at exactly 23:00 (11:00 PM) server time, every day of the week and every month of the year. The `0` in the minutes field ensures the job fires on the hour with no offset. This late-night schedule is ideal for tasks that should run after business hours when user traffic and system load are at their lowest.
How do I use this cron expression?
On Linux/macOS, edit your crontab with crontab -e and add:0 23 * * * /path/to/your/script.sh
Or use CronJobPro to schedule HTTP requests with this expression — no server required.
What timezone does cron use?
By default, cron uses the system timezone. CronJobPro lets you set a specific timezone per job, so your schedules are predictable regardless of server location.