Sonatype CLM Server - Policy Management Guide

By default any new notifications for policies that are being monitored will be sent out at 12 AM (per the CLM Server time). If you would like to update this, simply edit your config.yml file for the Sonatype CLM Server. The lines you will need to look for are as follows

# Hour of the day(0-23) to schedule Policy Monitoring execution. The
default is midnight.

#policyMonitoringHour: 0