title: Mongodb find created results by date today
body: <p>I have this query to get results on month. But I wanted to get the results of today.</p>
  
  <pre><code>var start = new Date(2010, 11, 1);
  var end = new Date(2010, 11, 30);
  
  db.posts.find({created_on: {$gte: start, $lt: end}});
  </code></pre>
  
  <p>What is the best way to do this?</p>