One thing that sounds (very remotely) like it might be what you are describing is the list of world level functions. In any case, it's worth a look if you haven't already done so (sounds like you probably have). In addition to individual x,y, and z values - listed as right/left, forward/back and up/down - you can get the current date (day, month and year), do radian/degree conversions and several other useful things - most of which are at the bottom of the list so not something you'd see most of the time.
Probably not what you're looking for, but thought I'd mention it just in case.