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Cron expressions

Run a cron job every 30 minutes

Need a task to run twice an hour? Every thirty minutes is a light, predictable cadence that fits refreshes and reminders without much overhead.

*/30 * * * *

Every 30 minutes

*/30 * * * * runs twice an hour, on the hour and at the half hour. It is a light cadence that fits half-hourly refreshes and reminders.

Next run times

  1. 1.2026-09-13T12:00:00.000Z
  2. 2.2026-09-13T12:30:00.000Z
  3. 3.2026-09-13T13:00:00.000Z
  4. 4.2026-09-13T13:30:00.000Z
  5. 5.2026-09-13T14:00:00.000Z

What */30 * * * * means

FieldValueMeaning
Minute*/30every 30 minutes
Hour*every hour
Day of month*every day of the month
Month*every month
Day of week*every day of the week

Example use cases

  • half-hourly sync
  • inventory updates
  • feed refresh

Work with this expression

Schedule this on Cronhost

Point it at any URL, add headers or a body if you need them, and let Cronhost handle the timing, retries, and execution logs. It runs on the free plan.

Frequently asked questions

Related schedules