title: Default date formatting with date_popup
body: <p>I'm using the Drupal 6 $form hook to create a date field and pop up.</p>
  
  <p>My default is today's date and time 00:00:00.</p>
  
  <p>I would like the default date to be yesterday and at a time of my choice, which could then be overwritten by the user in the client. I've been looking through the documentation but can't find anything that fits the bill.</p>
  
  <p>As always, any help would be appreciated.</p>
  
  <p>Many thanks.</p>
  
  <pre><code>$form['create_from'] = array(
    '#type' =&gt; 'date_popup',
    '#title' =&gt; t( 'Date and time from' ),
    '#default_value' =&gt;date('Y-m-d'),
    '#date_format' =&gt; 'Y-m-d H:i:s',
    '#date_year_range' =&gt; '-5:0',
  </code></pre>
  
  <p>);</p>