Cron Every Odd Hour

To run a cron job every odd hour, use the following cron string:

* 1-23/2 * * *

Let's break down this cron string:

Position 1: * means every minute
Position 2: 1-23/2 means every 2 hours between 1 and 23
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.