. In this case the input
           string must be exactly 6 or 8 bytes long but isn't.
          </p></li><li class="listitem"><p>
           <code class="literal">ECPG_INFORMIX_ENOTDMY</code> - The format string did not
           correctly indicate the sequential order of year, month and day.
          </p></li><li class="listitem"><p>
           <code class="literal">ECPG_INFORMIX_BAD_DAY</code> - The input string does not
           contain a valid day.
          </p></li><li class="listitem"><p>
     