How to create an Anniversary Checklist/Alert/Notification

Summary:

We found this topic:

Diving deep into this topic, we are facing a similar requirement and thought that an alert could achieve this requirement, but we weren't able to find the groovy expression to concrete this.
Did someone develop a solution for this?
Best regards-

Content (please ensure you mask any confidential information):

we develop a similar notification for the anniversary birthday to the manager using this filter

Template:

Wish this can help

Regards

Version (include the version you are using, if applicable):

24C

Code Snippet (add any code snippets that support your topic, if applicable):