Learn How Cron Expressions Work
Each tweak shows immediate plain-English explanation and a preview of the next 5 runs — best way to learn cron.
(0-59)hour
(0-23)day
(1-31)month
(1-12)weekday
(0-6)
In plain English
At 09:00 on Mon, Tue, Wed, Thu, Fri.
- Thu, May 2809:00
- Fri, May 2909:00
- Mon, Jun 109:00
- Tue, Jun 209:00
- Wed, Jun 309:00
Common patterns
Compatible with standard Unix cron, GitHub Actions, Kubernetes CronJob, and most scheduling systems. Use * for “every”, */5 for “every 5”, 1-5 for ranges, 1,15 for specific values.
Learning tips
Click through the preset patterns to see how each field maps to time. Start simple, work up to compound expressions.
The "next 5 runs" preview is the best learning tool — instant feedback when your expression doesn't mean what you thought.
Cron syntax: minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-6, 0=Sunday).
Как работи
Защо да използвате нашия?
Also check out…
Build Cron for GitHub Actions Workflows
GitHub Actions uses cron syntax for scheduled work
Build Cron for Kubernetes CronJobs
Kubernetes CronJob resources use standard cron syn
Build Cron Entries for Linux crontab
Build expressions for traditional Unix cron (cron,
Schedule Database Maintenance Jobs
Schedule backup, vacuum, or analyze jobs with conf