title: Countdown in Django Html Template
body: <p>I am trying to implement a countdown, that will give me the number of days and hours until the deadline.
  I have tried two different methods using the html filter but nothing is displayed. Is the filter not already part of Django?</p>
  <p><strong>models.py</strong></p>
  <pre><code>class Quote(models.Model):
     deadline = models.DateTimeField(auto_now=False, blank=True, null=True)
  </code></pre>
  <p><strong>html filter</strong></p>
  <p><strong>Method 1:</strong></p>
  <pre><code>{{ quote.deadline|timeuntil:today }}
  </code></pre>
  <p><strong>Method 2:</strong></p>
  <pre><code>{{ quote.deadline|timesince:comment_date }}
  </code></pre>