Sitewide Tags

Regarding the site wide tags plugin ( I have all the latest posts displayed on the main page as they are all being called from the one table. However since users can choose different time zones it affects the order of the latest posts. For example, if someone in England made a post followed by someone in America who is four hours behind, the American post would go beneath the post form England – yet it was published afterwards and so should be above it?

Is there a way to avoid this problem? Would a solution be to set everyone to the same time zone – something I wouldn’t like to do since it would be annoying for members?