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Cron Expression Helper
OpsPaste a 5-field cron expression and get a plain-English description — plus the gotchas that bite in production.
In plain English
At minute every 15 starting at 0, hour 9–17, on Monday–Friday, every month.
*/15
minute
9-17
hour
*
day-of-month
*
month
1-5
day-of-week
Watch the day-of-month / day-of-week trap: if both are set (not *), most cron daemons run when either matches — an OR, not an AND.