title: How to plot day and month
body: <p>I have a chart of a daily trend over time. </p>
  
  <p><img src="https://i.stack.imgur.com/Zz6Jz.png" alt="Price Over Time"></p>
  
  <p>The year is not relevant here and I want to show only day and month. I know you can show year and month but that is not the case.</p>
  
  <p>I tried to create a new variable called "Day_Month":</p>
  
  <pre><code>import datetime as dt
  df['Day'] =  df['date'].dt.day
  df['Month'] =  df['date'].dt.month
  df['Day_Month'] = df['Day'].astype(str) + "-" + 
  </code></pre>
  
  <p>but it's not possible to plot it as a string nor to convert it to date type.</p>
  
  <p>eventually, I would like my chart to look like this:</p>
  
  <p><img src="https://i.stack.imgur.com/6lhO6.png" alt="Final Price chart"></p>