title: Elasticsearch date format
body: <p>I'm trying to send the following JSON input to elasticsearch but I'm obtaining a parser error.</p>
  
  <p>This the JSON input</p>
  
  <pre><code>{
      "chassisNumber": "654321",
      "position": "40.480143, -3.688960",
      "issue": "Position",
      "timestamp": "2016-07-15T15:29:50+02:00[Europe/Paris]"
  }
  </code></pre>
  
  <p>the Index definition</p>
  
  <pre><code>{
     "mappings":{
        "vehicle":{
           "properties":{
              "vehicle":{
                 "type":"string"
              },
              "position":{
                 "type": "geo_point"
              },
              "issue":{
                 "type":"string"
              },
              "timestamp":{
                 "type":"date",
                 "format":"YYYY-MM-DD'T'HH:mm:ssZ"
              }
           }
        }
     }
  }
  </code></pre>
  
  <p>And the error associated with the "timestamp" field.</p>
  
  <pre><code>"reason": "Invalid format: \"2016-07-15T15:29:50+02:00[Europe/Paris]\" is malformed at \"[Europe/Paris]\""
  </code></pre>
  
  <p>I tried with a few date formats but no one was success. Can anybody help me to define the correct format to parse the "timestamp" field in elasticsearch?</p>
  
  <p>Thanks!!!</p>