What time is $$11999$$ hours after $$3$$ P.M.? 
Overseas Competition->Knowledge Point->Counting Modules->Permutations and Combinations->Combinations
$$12000$$ hours after $$3$$ P.M. is $$3$$ P.M. $$11999$$ hours after $$3$$ P.M is $$2$$ P.M. 