title: Elasticsearch query based on timestamp
body: <p>This is my elasticsearch query that intends to filter data between 11 pm and 12 pm on the day 2015.08.04. But it doesn't filter and gives many errors.</p>
  
  <pre><code>"query" : {"range" :
              {"@timestamp" :
                {"gt" : "2015-08-04  11:00:00", "lt" : "2015-08-04 12:00:00"} 
              } 
            }  
  </code></pre>