I was thinking "Shut the F . . . ," but that doesn't work in this context.
Perhaps something is going to hit a fan?
That doesn't quite fit either.
How about "What is the predicted date 4S2HTF?"
(Never mind, it loses effect with the extra words.)
SHTF = S**t Hits The Fan
Or Stuff Hits The Fan for a nicer way of saying it.