wcsftime

   Uses date and time information stored in a tm structure to create
   a wide-character output string. The format of the output string
   is controlled by a format string.

   Format

     #include  <wchar.h>

     size_t wcsftime  (wchar_t *wcs, size_t maxsize, const char
                      *format, const struct tm *timeptr); (XPG4)

     size_t wcsftime  (wchar_t *wcs, size_t maxsize, const wchar_t
                      *format, const struct tm *timeptr); (ISO C)
 

Additional information available:

Function_Variants               Arguments       Description     Return_Values
Example