drfaust
Sounds to me as though you will be fine.
CX/KA interviews are renowned for the odd really strange question that seems totally irrelevant and just trying to catch you out. Over the years many have tried weeding these out of the interview process but they always seem to creep back in due to the "wisenheimers" who love trying to trick people for their own personal satisfaction.
That particular gem is simply trying to ascertain whether you know where Indonesia is (roughly spread out along the equator) and what the circumference of mother Earth is at the equator. 24 hours one revolution etc.
Never try to read too much into any question. They can invariably be solved by some 1:60 rule combination or commonsense. I think the answer crwkunt roll suggests is, while correct, not going to be well received...bit like the candidate who was asked about the engines on the 737-400 he flies ...."blue ones" was the response.
Usually the sim session is more important. Doing well here shows that the company cannot afford not hire you as you have already saved them millions in training costs.
If you can get across the message that you know a bit about the history of the group and that you want to live in HKG then that also helps.
FWIW