Cron Every 20 Minutes

To run a cron job every 20 minutes, use the following cron string:

*/20 * * * *

Let's break down this cron string:

Position 1: */20 means every 20 minutes
Position 2: * means every hour
Position 3: * means every day of the month
Position 4: * means every month
Position 5: * means every day of the week

See more cron examples.