How can you tell when a repository was archvied?

As an administrator I am often asked, when did this happen? In this case I was asked when was this repository archived?

Where can I find this information. It’s not listed under history, which is kind of understandable because that is file history.

It’s not listed on the main repository page (which is where I would have expected to see it).

It’s not listed under any of the Project Information tabs.

I see a the warning “Archived project! Repository and other project resources are read-only” but no supporting information to say when this occurred.