Date and time formatting

[LadyStardust]

 %a    abbreviated weekday name (e.g., Wed)
 %A    full weekday name (e.g., Wednesday)
 %b    abbreviated month name (e.g., Sep)
 %B    full month name (e.g., September)
 %c    date and time (e.g., 09/16/98 23:48:10)
 %d    day of the month (16) [01-31]
 %H    hour, using a 24-hour clock (23) [00-23]
 %I    hour, using a 12-hour clock (11) [01-12]
 %M    minute (48) [00-59]
 %m    month (09) [01-12]
 %p    either "am" or "pm" (pm)
 %S    second (10) [00-61]
 %w    weekday (3) [0-6 = Sunday-Saturday]
 %x    date (e.g., 09/16/98)
 %X    time (e.g., 23:48:10)
 %Y    full year (1998)
 %y    two-digit year (98) [00-99]
 %%    the character `%´