Powershell: When was the password last reset for the Local Administrator Account?

In my last post (found here) I wrote about how to determine the account name of the local administrator account on a computer. Now that we know the account name, when did the password last change on that account? Managing local accounts on computers (clients or servers) can be a hassle and one thing that makes auditing a little bit simpler is to find out how old the password for a local user on a machine is.