In the following simple solution, I cover the process of removing the (year, month, day) date from WordPress day and name based permalinks (post urls). There was a time when many professional bloggers recommended using a day and name based permalink structure. However, for present day SEO, many bloggers now recommend using simple name based or category and name based permalinks.
It is easy to change the permalink stucture itself in WordPress, but once this is done, any incoming links will need to be redirected to the new permalinks by use of a rewrite rule or you may risk losing your inbound traffic to the old permalinks or worse yet, lose previous page rank and index placement for those posts.
How to Remove the Post Date from Permalink urls
Login to your WordPress Admin panel
Navigate to Settings > Permalinks
Check the option to use a Custom Structure, enter /%postname%/ and then Save Changes
Using an FTP client, copy the .htaccess file from your domains directory on the server to your computer
If WordPress is installed in the Root directory (http://yoursite.com), open the .htaccess file and, just before # Begin WordPress, insert the following code*: