title: What does this d3 time format function mean?
body: <p>I know there is a specified d3 time formatting. But when I check the example shown here   <code>d.Year = new Date(d.Year,0,1);</code> the year's format is <code>"1996"</code></p>
  
  <p>Does it one of the other ways to format year as a string here, i don't quite understand it.</p>
  
  <p>Also, if my time format is like"01/01/96", what is the right format to get the string here?</p>