charlestsmith

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

Pietro Amedeo

This plugin provides the ability to define activities each characterized by intervals of time in which they are carried out called intervals. 
Each of these time intervals is characterized by a start time, an end time and a description associated with details about the task to be performed.
The activities thus defined may be displayed individually in the pages of WordPress using a shortcode: the display style may be selected from one of those available and further customized to fit the theme in use, through the use of a special Specified CSS between the plugin options.
** Included translations ** 
* Italian(it_IT)
** Coming soon** 
* More layouts 
* (Got more ideas? Tell me!)

PAC Weekly Timetable

Timetables generation with admin interface and shortcodes Manual and tutorial: GitHub Page

Day Counter vs PAC Weekly Timetable