title: date-fns: how to to get the current date + time in format YYYY-MM-DDThh:mm:ss:dddddd
body: <p>My company is using date-fns and I'm trying to set a variable equal to the current date + time. We must use date-fns, and the format is specified to be 'YYYY-MM-DDThh:mm:ss.dddddd'.</p>
  <p>How can I do this? I tried simply <code>format(new Date(), 'YYYY-MM-DDThh:mm:ss:dddddd')</code>, but that was not working as expected.</p>
  <p>(Also what is the 'T' for? Just to specify that a time measurement will follow? And what are the d's?)</p>
  <p>Thanks!!</p>