title: Adding Time to a DateTime object
body: <p>I'm trying to update a DateTime object with time of day. Here is what I'm currently trying to do:</p>
  
  <pre><code>time_of_day = schedule.start_at.strftime("%H:%M:%S")
  specific_day_of_next_month(schedule.start_at) + time_of_day
  </code></pre>
  
  <p>the variable specific_day_of_next_month returns this value:</p>
  
  <pre><code> =&gt; Thu, 27 Aug 2020 00:00:00 +0000
  </code></pre>
  
  <p>and time_of_day has this output.</p>
  
  <pre><code> =&gt; "14:45:53"
  </code></pre>
  
  <p>So I'm basically trying to put them together.
  But when I run that I get this error:</p>
  
  <pre><code>TypeError: expected numeric
  </code></pre>
  
  <p>Any idea how I can do this?</p>