The NightlyProcessing is done by the cluster analyst by running the batch file: cma-database-day.bat
Each CUCM cluster has its own cma-database-day.bat file, this file runs every day and builds the database summary template for the cluster.
In the batch file, there is Nightly Processing file: cma-database-day.pcmd The cma-database-day.pcmd is the Daily summary template, it is the input file for ircmd. It has the timing section, for example:
Start 2020-09-09 00:00
Stop 2020-09-10 00:00
These two timestamps are updated every night after the nightly processing is completed, and incremented 1 day. This is also the last successful time of the database summary.