title: Timezone offset rails
body: <p>In rails how to get the exect day after adding offset</p>
  
  <pre><code>irb(main):066:0&gt; DateTime.now.utc
  =&gt; Sat, 29 Mar 2014 19:12:57 +0000
  </code></pre>
  
  <p>after adding <code>5.30 hours</code> it should show 30 march. why it is 29 again .anything I missed here</p>
  
  <pre><code>irb(main):065:0&gt; DateTime.now.utc.change(:offset =&gt; "+0530")
  =&gt; Sat, 29 Mar 2014 19:09:03 +0530
  </code></pre>