title: Find objects between two dates MongoDB
body: <p>I've been playing around storing tweets inside mongodb, each object looks like this:</p>
  
  <pre><code>{
  "_id" : ObjectId("4c02c58de500fe1be1000005"),
  "contributors" : null,
  "text" : "Hello world",
  "user" : {
      "following" : null,
      "followers_count" : 5,
      "utc_offset" : null,
      "location" : "",
      "profile_text_color" : "000000",
      "friends_count" : 11,
      "profile_link_color" : "0000ff",
      "verified" : false,
      "protected" : false,
      "url" : null,
      "contributors_enabled" : false,
      "created_at" : "Sun May 30 18:47:06 +0000 2010",
      "geo_enabled" : false,
      "profile_sidebar_border_color" : "87bc44",
      "statuses_count" : 13,
      "favourites_count" : 0,
      "description" : "",
      "notifications" : null,
      "profile_background_tile" : false,
      "lang" : "en",
      "id" : 149978111,
      "time_zone" : null,
      "profile_sidebar_fill_color" : "e0ff92"
  },
  "geo" : null,
  "coordinates" : null,
  "in_reply_to_user_id" : 149183152,
  "place" : null,
  "created_at" : "Sun May 30 20:07:35 +0000 2010",
  "source" : "web",
  "in_reply_to_status_id" : {
      "floatApprox" : 15061797850
  },
  "truncated" : false,
  "favorited" : false,
  "id" : {
      "floatApprox" : 15061838001
  }
  </code></pre>
  
  <p>How would I write a query which checks the <em>created_at</em> and finds all objects between 18:47 and 19:00? Do I need to update my documents so the dates are stored in a specific format?</p>