This plugin (MEM or Minimalistic Event Manager) is intended for theme authors and developers, who want a simple, robust and flexible solution for managing event dates.
The plugin offers the following functionality:
Note: we are talking about event dates, but it could be any type of date - publication dates, product release dates, birth dates...
Technically, the MEM plugin stores the dates as ordinary Custom Fields, in a "machine-readable" format (such as "2012-11-23 13:37"). This gives you absolute freedom for displaying your events in your theme:
meta_key / meta_compareparameters.
datefunction to display the date in any possible manner (or
date_i18nto localize it properly).
The plugin has two settings that can be modified with a few lines in your functions.php file:
See the plugin options page for the full instructions.
The MEM plugin works as a simple interface for entering those dates into custom fields, but it won't do anything on the public side of your theme. What happens with the dates on the public side is entirely up to you. You must decide how to display the dates, and you will have to edit your theme files for that.
If you aren't sure how to achieve this, this wiki will provide a collection of examples to get you started.