I have below cron job code. Currently, it is running for every 30 minutes. 

```
<job name="customer_details" instance="my_file_name" method="my_method">
  <schedule>*/30 * * * *</schedule>
</job>

```

I want my cron job should run daily at 10:30 PM to generate the csv related to customer details based on some criteria. 

What should be the value inside `<schedule> * * * * * </schedule>`