Until now, the only solution to edit the modification date of an
article in Joomla, is to go through the database. This technique is
reserved for people with the access rights and skills to do so.
Modify Date plugin has been specially designed to allow you to modify this field directly from the Joomla administration panel, without having to open in the database. Thus, you have complete control over your site and how your articles are displayed, specialy in lists. As this plugin is free, you have every reason to install and use Modify Date right now!