When you do this you'll get the creationTime and passwordLastSetTime as seconds since the 'epoch' – January 1, 1970, 00:00:00 (UTC). These are numbers like 1474441704.265237 which aren't very easy for a human to read :-)

To convert this into a human-readable date and time, open a terminal and do this:

  python

  >>> import time

  >>> time.strftime("%a, %d %b %Y %H:%M:%S", time.localtime(1474441704.265237))

You'll get something like 'Wed, 21 Sep 2016 07:08:24'

(I'm sure you can do this in other languages than python...)