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Explain cron expressions without memorizing the field order

Standard 5-field (`min hour dom mon dow`). Show a human sentence + next few hypothetical fire times if implemented. Not a full Quartz/6-field engine unless labeled.

chars: 11
Input
Output

When to use

Reading CI schedules or inheriting a crontab you didn’t write.

Examples

Input
0 9 * * 1-5
Output
At 09:00 on Monday through Friday.
Input
*/15 * * * *
Output
Every 15 minutes.

How it works

Parses fields → describes lists/ranges/steps; rejects invalid. Dialect is typical 5-field Unix cron (not every cloud vendor extension).

Common pitfalls

  • AWS/Quartz 6–7 field crons differ — check vendor docs.
  • Day-of-month AND day-of-week quirks confuse everyone.
  • Timezone is the runner’s timezone, not “UTC” by magic.

How this differs

Explains schedules; Unix Timestamp Converter deals with absolute instants.

FAQ

6-field cron with seconds?
Say unsupported or offer a toggle.
Timezone?
Cron is usually server-local — remind users.
Uploaded?
No.
Related?
Unix Timestamp Converter.

Related tools

Runs in your browser. Nothing is uploaded. Not a security product —hashes and JWT decode are for debugging, not password storage or auth advice.