How to send time of state change in a notification?

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
Opensearch: 2.17
Opensearch Dashboards: 2.17
Server OS: RHEL 9.6
Browser: Google Chrome 137.0.7151.69

Describe the issue:
Hi !
I want to send the execution time in human readable format during a state change.

I configured the state change policy with the different states including actions and notification. The state change is working and a notification is send correctly. But where do I find the time of the state change to send it in the notification ? The CTX structure is containing other times, but not in human-readable format.

Thnx for any help !

Best regards, Detlef