flexostudio

Countdown Clock 
see: http://www.flexostudio.com/
<h3>How to use</h3>
1.Going by the settings in the administration and data entry required to start the clock. Generate code and copy it and put the desired location and you’re done. 
or 
2. paste the following code to the desired location in the code of your page: 
example: 
 $con='[flexocounter endDate=”30.09.2011 10:30″ url=”http://google.com” header=”text” footer=”text”]’; 
 flexoCounter::the_content($con); 
$con generate in the administration too

Flexo Counter

jordancalder

This plugin adds a countdown timer to your webpage with the use of a shortcode.
In Settings > WP Countdown Timer, set the datetime you want to count down towards and save.
Use the shortcode [countdown] on any page to display the countdown timer.

WordPress Countdown Timer

Wordpress plugin to add a countdown timer to your website. Display a timer and countdown to any day, time, or event.

Flexo Counter vs WordPress Countdown Timer