Justin

<p>This plugin adds a counter widget to the WordPress sidebar area.</p>
<p>For more information visit:</p>
<p><a href="http://justinrains.com/" rel="nofollow ugc">WP Days Since Widget</a></p>


Date Counter

This plugin allows the admin to select add a widget to their sidebar that shows the number of days since a specified date. One day at a time.

charlestsmith

<p>This plugin enables you to create customized timelines and dates on WordPress pages and posts with a shortcode.</p>
<h3>Plugin Features</h3>
<ul>
<li>Current Day and Date counter</li>
<li>Time and Date duration between two dates</li>
<li>24/ 12-hour time format</li>
<li>Days, weeks till next birthday</li>
</ul>


Day Counter

This plugin enables you to create customized timelines and dates on WordPress pages and posts with a shortcode.

Date Counter vs Day Counter