How do I get the date to show as 10/31/17 1:25pm instead of 2017/10/31 13:25:13?

From console:

You still haven’t changed your password. Don’t get caught off guard – change your password now, before it expires tomorrow,

%dateTime%!

From Preview:

You still haven’t changed your password. Don’t get caught off guard – change your password now, before it expires tomorrow, 2017/10/31 13:25:13!

Thank You!