Useful tools for WordPress administrators and editors › Forums › Questions and Answers › Show the time instead of date (publication/modification) › Reply To: Show the time instead of date (publication/modification)
Showing just the time is not useful for posts older than one day. To provide the user a good orientation the time plus the date are always displayed.
On the list edit page in the box “Post Data Output Options”, there in the first section “Visibility of general post data” you can activate both “Show post publication date” and “Show post modification date” to display both time informations. Was that your question?