Borg,
Maybe there's a few crossed wires here. The thing is the only reason you would ever hold is for the chance of an approach. If you have the chance of an approach then the "GO" point to the alternate is the Missed Approach point.
I have known pilots, expats with BA/QF bacgrounds who should have known better, assume that you can hold unti you would HAVE to divert or be cleared for an approach but always assuming that once you are cleared for the approach the requirement for an alternate no longer applies.
WRONG!
The requirement for an Alternate applies until you hit the TOGA buttons at the DH or MAP and even then, as we see often in Europe, if Alternate 1 is dodgy, then you still have to carry alternate 2. What you cannot do is hold to the point where ONLY a guaranteed succesful approach can get you on the ground with company minimum fuel on board.
Of what possible use is a Latest Divert Time that doesn't include at least one chance for an approach? Why would you be holding?