My client asked these questions and I am unsure of the answers. Knowing when a file was created/changed The idea is to be able to see: when a file was created, whether the instance in a different folder is newer, older or just a copy. Example: I just copied files from my local drive into a subfolder of “docs” Timestamp for the files varied the uploaded files all have the exact same timestamp i.e. when the files were placed in the folder regardless of when the file was created when uploaded, AZ time was 16 Nov 23:12 EST was 17 Nov 01:12 Timestamp in ProFiles (a Joomla file management tool) is 17 Nov 06:12 SO – timestamp must be coming from Europe or UTC I copied a file from that folder into a parent folder – the timestamp reflected when the copy occurred. Again, that fails to meet the need, which should be date/time of the original The same thing occurred when Joomla was restored from a backup. The date reflected restoration, not file when the file was actually created. The client also says "The observed behavior is not what I grew up with in a pure unix environment where creation/modification date was preserved during copy/move/unpack." The WHM time indicates the server time is Eastern US time and the Joomla installation is set to Eastern US time. I am finding conflicting information regarding how the server linux/unix handles time stamps so I am posting here so other users can benefit from this knowledge as well.