What is the difference between 5-field and 6-field cron?

Standard cron uses 5 fields (minute hour dom month dow). Some systems add a sixth field for seconds (at the start) or year (at the end). Quartz cron uses 6-7 fields. Check your target system's format before generating.

Why does my cron run at the wrong time?

Cron runs in the server's timezone (usually UTC for cloud platforms). '0 9 * * *' means 9:00 server time, not your local time. Either adjust the expression for your timezone offset or set TZ in the crontab/environment.

Analizar a cron expression and explain its schedule in plain English

Decodificar a cron expression (e.g. '0 9 * * 1-5') into a human-readable schedule, and generate cron expressions from natural language.

1

Cron expressions are compact but cryptic: five fields (minute hour day-of-month month day-of-week) encode complex schedules. Parsing them into plain English prevents scheduling mistakes; generating them from description avoids syntax errors.
2

Analizador de expresiones Cron →
Paste a cron expression (e.g. '*/15 9-17 * * 1-5'). The tool explains it in plain English ('At every 15th minute past the hour, between 09:00 and 17:00, Monday through Friday') and lists the next few execution times.
3

Generador de expresiones Cron →
Describe the schedule in words or pick common patterns (daily at 9am, every weekday, first of month). The tool emits the correct cron expression.

Preguntas frecuentes

What is the difference between 5-field and 6-field cron?: Standard cron uses 5 fields (minute hour dom month dow). Some systems add a sixth field for seconds (at the start) or year (at the end). Quartz cron uses 6-7 fields. Check your target system's format before generating.
Why does my cron run at the wrong time?: Cron runs in the server's timezone (usually UTC for cloud platforms). '0 9 * * *' means 9:00 server time, not your local time. Either adjust the expression for your timezone offset or set TZ in the crontab/environment.

Flujos que resuelven esta tarea

Analizar expresión Cron y formatear JSON

Analizar una expresión cron y formatear el resultado como JSON.

CANALIZACIÓN

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Analizador de expresiones Cron

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Generador de expresiones Cron

Visually build cron expressions. Gratis, privado, 100% del lado del cliente.

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Convertidor de marcas de tiempo

Convert between Unix timestamps and human-readable dates with UTC and local time. Gratis, privado y 100% del lado del cliente.

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