Date and Time format string

Specifier  Description
%Y         Year (four digits)
%y         Year (last two digits)
%b,        %B Short month, full month
%m         Month (number)
%d         Day of month (left-padded with zeros)
%e         Day of month (left-padded with blanks)
%a,        %A Short day name, full day name
%H,        %I Hour (24-hour clock), hour (12-hour clock)
%M         Minute
%S         Second
%c         Equivalent to "%a %b %d %H:%M:%S %Y"
%x         Equivalent to "%m/%d/%y"