What is exact difference between \'YYYY\' and \'yyyy\'. I read in this link, it states that
A common mistake is to use YYYY. yyyy specifies the calen
dd/MMM/YYYY - e.g.:1 01/Jan/2000; answer : 19/dec/1999 (see weekly calendar December month last Monday suppose leaf year + 1 day) dd/MMM/yyyy - eg: ordinary - no problem.