This module is basically just a theme hook to enable you to display a time string that would update dynamically, and also display correctly even if the rendered output was cached and seemingly wron
Extension for the Services module returning a JSON formatted error message instead of a WSOD with error info only through the HTTP header. In many cases this is needed by the application making the request to react appropriate. At the same time it outputs human readable output, hinting developers directly what is going on in the browser.