Cron Every 30 Minutes

To run a cron job every 30 minutes, use the following cron string:

*/30 * * * *

Let's break down this cron string:

Position 1: */30 means every 30 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.