Developer Utilities
Cron expression explainer
Turn a cron expression into plain English and see its next five runs — including the day-of-week trap that makes jobs fire twice as often as intended.
Supported dialect: five-field Vixie-style cron, numeric lists/ranges/steps, month/day names and the parser’s documented @aliases. No seconds, year field, Quartz ?, L, W or # extensions. Choose browser local time or UTC. This preview scans real instants: local DST gaps are skipped and repeated wall-clock minutes occur twice. Your production scheduler may use a different policy.
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