Five fields separated by spaces: minute, hour, day-of-month, month, day-of-week.
Examples
In plain English
on weekdays at 09:00
Minute0
0
Hour9
9
Day of month*
any value
Month*
any value
Day of week1-5
1, 2, 3, 4, 5
About cron expressions
A cron expression is a string of five fields that defines a recurring schedule. This tool translates the expression into plain English and previews the next runs so you can sanity-check before deploying.
* — any value (every minute / hour / day…)
, — list separator (e.g. 1,15,30)
- — range (e.g. 9-17 means 9 through 17)
/ — step (e.g. */5 means every 5)
@daily, @hourly, … — shortcuts for common schedules