Cron
Read a cron expression back in plain English and see exactly when it will next fire.
Runs in your browser — nothing you type here is sent anywhere.
Expression — minute hour dom month dow
Reads as
every 15 minutes, hour 9-17, weekday 1-5
Next runs — your local time
Thu, Jan 109:00 AM
Thu, Jan 109:15 AM
Thu, Jan 109:30 AM
Thu, Jan 109:45 AM
Thu, Jan 110:00 AM
Cron syntax is compact and almost entirely unreadable at a glance. The difference between `*/5 * * * *` and `5 * * * *` is every five minutes versus once an hour, and that mistake is easy to deploy and slow to notice.
Paste an expression and it is explained field by field, then run forward to list the next several execution times so you can confirm it means what you intended. Step values, ranges, lists and named days are all handled.
What people open it for
- Checking a crontab line before it goes into production
- Working out why a scheduled job fired more often than expected
- Reading someone else's schedule without consulting the manual
In the terminal
cron */5 * * * *
Every utility is also a command in the desktop's shell.