title: Mongo Node query within 1 hour of timestamp
body: <p>My query to find all objects within 1 hour ago of current time (based on timestamps) is not returning data:</p>
  <p>The schema:</p>
  <pre><code>var visitSchema = mongoose.Schema({
    timestamp: { type: Date, default: Date.now },
    userID: String,
    userName: String,
    worldID: String
  });
  </code></pre>
  <p>Node + Mongoose back-end:</p>
  <pre><code>var d = new Date() - 60 * 60 * 1000; //1 hour ago (from now)
     
  var qw = {
      timestamp: { 
          $gt: d
      },
      worldID: req.query.worldID
  }    
  db.collection('visits').find(qw).sort({_id: -1}).toArray(fn(req, res));
  </code></pre>