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⏱️ Cron Expression for Every 20 Minutes

CronForge — visual crontab editor with timezone + DST

The cron expression to run a job every 20 minutes is */20 * * * *. Load it in the builder below to see exactly when it will next fire in your own timezone, check it against a DST transition, and copy it in the syntax your platform expects.

Expression

Every 20 minutes.
minute · hour · day-of-month · month · day-of-week   (5 fields, 24h clock)

Presets

Visual editor click cells to toggle

Minute (0-59)
Hour (0-23)
Day of month (1-31)
Month (1-12)
Day of week (0-6, Sun=0)

Next 10 fire times

    What */20 * * * * does

    The */20 in the minute field is a step value. It means 'starting at minute 0, then every 20 minutes'. The four remaining asterisks mean every hour, every day of the month, every month and every day of the week — so the job runs continuously, all year.

    Within any given hour it fires at :00, :20, :40, giving 3 runs per hour and 72 per day.

    The mistake people make

    Dropping the */ changes the meaning completely. 20 * * * * runs once an hour, at minute 20 — not every 20 minutes. The slash is what turns a value into an interval.

    Every 20 minutes gives 3 runs per hour, at :00, :20 and :40.

    Frequently asked questions

    What is the cron expression for every 20 minutes?

    */20 * * * *. The */20 step in the minute field fires the job every 20 minutes, starting at minute 0 of each hour.

    How many times does */20 * * * * run per day?

    72 times — 3 per hour, 24 hours a day.

    Related cron expressions

    Cron Expression for Every Minute*/1 * * * * Cron Expression for Every 2 Minutes*/2 * * * * Cron Expression for Every 3 Minutes*/3 * * * * Cron Expression for Every 4 Minutes*/4 * * * * Cron Expression for Every 5 Minutes*/5 * * * * Cron Expression for Every 6 Minutes*/6 * * * * Cron Expression for Every 10 Minutes*/10 * * * * Cron Timezone and DST Behavior by Platform30 2 * * 0

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