Cron Expression Explainer
Explains a cron schedule in plain English and lists the next five times it will run.
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A cron expression has five parts: minute, hour, day of month, month and day of week.
What is Cron Expression Explainer?
Cron is the scheduler used on Unix and Linux systems. A cron expression is five fields that say when a job should run, which can be hard to read at a glance.
What this tool does
Reads the five fields (minute, hour, day of month, month, day of week), including ranges, lists, steps like */15, month and day names, and shortcuts like @daily. It describes the schedule and lists the next five run times in your time zone.
How to use it
- Type a cron expression, for example */15 9-17 * * 1-5.
- Read the description.
- Check the next run times to make sure they are what you expect.
Did you know?
- When both the day of month and the day of week are set, cron runs the job when either one matches.
- The expression 0 0 * * 0 means every Sunday at midnight.