The date format consists in a text string in which the date information
(like day number) is specified using tags. A tag begins by the character
"%" optionally followed by
"." or
"0" and
a character indicating which specific information must be provided.
The possible values are:
| C |
Century |
| Y |
Year number in the century |
| y |
Year |
| m |
Month (1-12) |
| d |
Day (1-31) |
| % |
The symbol "%" |
If the second character is used, the corresponding information is produced
in fixed format with space (
".") or zero (
"0") as the
padding character. For instance, the day 1
will be displayed as
"1" with the format
"%d";
as
" 1" with
"%.d" and as
"01" with
"%0d".