Format Date+Time with this pattern (examples: "yy-MM-dd h:m:s.SSS a" for "16-04-05 2:07:20.666 PM", "yyyy-dd-MMM HH:mm" for "2016-05-Apr 14:07").  This will be used in areas of the client where a date with a timestamp is needed, like Checkout, Due Date, or Record Created.