Cron Expression Explainer
Cron syntax is write-only. Paste an expression and get it back in English — plus proof, in the form of the next five runs.
minutehourdaymonthweekday
At 09:00 on Monday, Tuesday, Wednesday, Thursday, and Friday.
Next 5 runs (local time)
- Calculating…
Built with this prompt
Build a cron expression explainer in React with: - An input for a standard 5-field cron expression (minute hour day-of-month month day-of-week) - Support for *, ranges, lists, step values (*/15), month/weekday names, and @daily-style aliases - A plain-English description of the schedule - The next 5 fire times in the user's local timezone - Correct semantics: when day-of-month and day-of-week are both restricted, cron ORs them - Clear inline error messages for invalid fields - Preset buttons for common schedules - Dark theme, no dependencies