@norburban. Thanks for using my plugin and for posting. I use the PHP stat function (mtime) to get the time data. You can specify the time zone by changing the ‘timeformat’ in either the article or the Plugin Manager. See the PHP date manual for full instructions.
The default value for timeformat is ‘Y-m-d H:i:s’. To get time zone information, you can use ‘Y-m-d H:i:s e’ or ‘Y-m-d H:i:s T’ or maybe ‘Y-m-d H:i:s O’
Hope this helps.