I'm in the Mountain Time Zone (GMT-6 right now):

  #!/usr/bin/env python
  import datetime
  for when_was in xrange(0,10):
    print datetime.datetime.fromtimestamp(14 * 10**when_was)

  $ ./theabove.py
  1969-12-31 17:00:14
  1969-12-31 17:02:20
  1969-12-31 17:23:20
  1969-12-31 20:53:20
  1970-01-02 07:53:20
  1970-01-16 21:53:20
  1970-06-11 18:53:20
  1974-06-09 02:53:20
  2014-05-13 10:53:20
  2413-08-22 17:53:20

  <krt@box>:~$ python -c "import datetime;print datetime.datetime.fromtimestamp(1400000000)"
  2014-05-13 09:53:20