AIX stores the last time a user changed their password as a "epoch" time stamp, or in other words as the number of seconds since 1970.
For example, if you want to see when the last time root changed their password you can type:
# lsuser -a lastupdate root
root lastupdate= 1391663150
This shows that root changed their password at 1,391,663,150 seconds after 1970. In other words, this really isn't very helpful unless you take this epoch number and convert it to a real... [More]