UPDATE:
After playing around with many ideas and lots of trial and error, I've figured out a way to allow the lightning date and time to update with the rest of the site and display the date in the desired format. Had to split the date and time out from the current combined testtag and then split the ajax tags into two separate ajax tags too. It now works (at least in my testing) well enough to release it.
The new version is 6.91 and is only needed if you have lightning on your site. If you don't use it, there is no need to jump onto 6.91 right away. If you do update, only the main php and ajaxWDwx3.js have to be update as the ajax code changed to version 3.06 with this update.
There we a couple other very minor updates in this release to remove the negative sign in places where the red down arrow already shows in front. I thought that was kinda a double negative thingy! I've also added the instructions for using the new ajaxWDwx3.js file into the instructions as too many people are not reading the READ-ME-1ST file and they are actually using the stock ajax code instead!
Scott