How to extract Month name from Timestamp in R?
<p>I have time-stamps in one column of my dataframe. They look like </p>

<pre><code>"Tue May 14 21:57:04 +0000 2013"
</code></pre>

<p>I want to replace the whole timestamp with only month name. How can I do it in R? Lets say the column name is "timestamp" and dataframe name is "Df". </p>

<p>Below is the sample of some more entries.</p>

<pre><code>    "Wed Jul 10 01:30:36 +0000 2013"    
    "Fri Apr 20 01:46:59 +0000 2012"    
    "Sat Jul 07 17:56:34 +0000 2012"    
    "Sat Mar 16 02:12:30 +0000 2013"    
    "Sat Feb 16 02:29:11 +0000 2013"
</code></pre>

<p>I want these to look like</p>

<pre><code>Jul
Apr
Jul
Mar
Feb
</code></pre>

<p>Your help will be highly appreciated. </p>