Minutes Pattern

Every 30 Minutes Cron Expression

Execute a job every 30 minutes (twice per hour)

CRON EXPRESSION

*/30 * * * *
Frequency:2 times per hour (48 times per day)

Understanding the Expression

*/30

Minute

*

Hour

*

Day

*

Month

*

Weekday

Format: minute hour day month weekday

Special characters: * (any value), */n (every n), n-m (range), , (list)

Want to test this expression?

See when it will run in your timezone and validate the syntax

Test in Cron Tester

Use with ClawTick

Schedule this pattern with ClawTick's CLI or dashboard:

clawtick job create \
  --cron "*/30 * * * *" \
  --message "Your task message here" \
  --name "Every 30 Minutes Job"
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Common Use Cases

News feed updates

Social media content fetching

Moderate-frequency synchronization

Report generation

Variations

0,30 * * * *

Every 30 minutes (alternative syntax)

Production Tips

Timezone Considerations

Cron expressions run in UTC by default. ClawTick lets you specify IANA timezones per job (e.g., America/New_York, Europe/London).

Monitoring & Alerts

Always monitor scheduled jobs for failures. ClawTick provides built-in execution history and failure alerts so you know immediately when something breaks.

Idempotency

Design jobs to be idempotent (safe to run multiple times). This prevents issues if a trigger fires twice due to network retries or scheduler edge cases.

Related Cron Expressions

Every 15 Minutes

*/15 * * * *

Execute a job every 15 minutes

Every Hour

0 * * * *

Execute a job at the start of every hour

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