title: Convert new Date() to weekday string eg 'Thursday' using date-fns
body: <p>I'm using date-fns I would like to convert new Date(2020,1,10) to 'Thursday'. I'm trying to use</p>
  <pre><code>dateFns.format(new Date(2020,1,10),'dddd')
  </code></pre>
  <p>but it returns 0001?</p>
  <p>Thanks in advance</p>