XML RPC post produces immediate revision with odd post_date_gmt

Question

I am sending a post to Wordpress 3.8 with XML RPC. Here is the raw XML being sent to wordpress:

<?xml version="1.0" encoding="UTF-8"?>
<methodCall>
   <methodName>wp.newPost</methodName>
   <params>
      <param>
         <value>
            <int>0</int>
         </value>
      </param>
      <param>
         <value>
            <string>admin</string>
         </value>
      </param>
      <param>
         <value>
            <string>password</string>
         </value>
      </param>
      <param>
         <value>
            <struct>
               <member>
                  <name>post_status</name>
                  <value>
                     <string>publish</string>
                  </value>
               </member>
               <member>
                  <name>post_title</name>
                  <value>
                     <string>test 0.762719240039587</string>
                  </value>
               </member>
               <member>
                  <name>post_content</name>
                  <value>
                     <dateTime.iso8601>20140111T20:39:15</dateTime.iso8601>
                  </value>
               </member>
               <member>
                  <name>post_date</name>
                  <value>
                     <dateTime.iso8601>20140111T20:39:15</dateTime.iso8601>
                  </value>
               </member>
               <member>
                  <name>terms_names</name>
                  <value>
                     <struct>
                        <member>
                           <name>category</name>
                           <value>
                              <array>
                                 <data>
                                    <value>
                                       <string>test</string>
                                    </value>
                                 </data>
                              </array>
                           </value>
                        </member>
                     </struct>
                  </value>
               </member>
            </struct>
         </value>
      </param>
   </params>
</methodCall>

Seems ok. The Date is being sent with the correct UTC (the post was made at 14:39 Chicago time, -6 GMT) time and I get a post ID back (in this case 28062). Groovy.

Taking a look at it in phpMyAdmin the results go a bit weird.

ID #28063 has the correct timestamp on post_date_gmt, but the parent (28062), has a date that is 12 hours out from the date that was sent. Double the correct GMT offset. What is going on here?

Answer 1

Alright. I think I cracked it.

<dateTime.iso8601>20140111T20:39:15</dateTime.iso8601>

Should be:

<dateTime.iso8601>20140111T20:39:15Z</dateTime.iso8601>

Looks like the toolkit I was using didn't quite implement iso8601 perfectly (or wordpress isn't - not sure). I'm using Node Wordpress and tracked down that it uses the module Node XML RPC to actually send the XML RPC. This seems to be where the wrong date formatting is occurring.