Hi,
In Power-Automate workflow, I am able to get the list of users who belong to a SharePoint group, using RestAPI. In the details returned, I am unable to see the 'date' on which the user was added to the SharePoint group. How can I get this data so I can delete users who have been added a month before?
You are correct. GRAPH API does not give you that information.
You could try searching the Unified Log
How to find user join date for O365 groups? - Microsoft Community