title: Working with datetime in Rails
body: <p>How to properly extract a <strong>time</strong> only from the <strong>datetime</strong> object (<code>post.created_at</code>, to be precise) with/without the influence of <code>TimeZone</code>? How to extract the <code>day</code>, <code>month</code> and <code>year</code> values? How to extract the <code>day/month/year</code> via a custom pattern (is it possible)?</p>