PG_INFORMIX_BAD_MONTH</code></span> <a href="#ECPG-INFORMIX-CONSTANTS-ECPG-INFORMIX-BAD-MONTH" class="id_link">#</a></dt><dd><p>
        Functions return this value if a bad value for a month was found while
        parsing a date. Internally it is defined as -1205 (the <span class="productname">Informix</span>
        definition).
       </p></dd><dt id="ECPG-INFORMIX-CONSTANTS-ECPG-INFORMIX-BAD-DAY"><span class="term"><code class="literal">ECPG_INFORMIX_BAD_DAY</code></span> <a href="#ECPG-INFORMIX-CONSTA